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EXECUTIVE SUMMARY FOR THE BULL TROUT RECOVERY PLAN Current Species Status The bull trout (Salvelinus confluentus) in the coterminous United States was listed as threatened on November 1, 1999 (64 ...
Citation Citation
- Title:
- Bull Trout, Salvelinus Confluentus... Draft Recovery Plan, Chapter 1, Introduction...
- Author:
- U.S. Fish and Wildlife Service
- Year:
- 2003, 2008, 2005
EXECUTIVE SUMMARY FOR THE BULL TROUT RECOVERY PLAN Current Species Status The bull trout (Salvelinus confluentus) in the coterminous United States was listed as threatened on November 1, 1999 (64 FR 58910). Earlier rulemakings had listed distinct population segments of bull trout as threatened in the Columbia River, Klamath River, and Jarbidge River basins (63 FR 31647, 63 FR 42757, 64 FR 17110). Bull trout distribution, abundance, and habitat quality have declined rangewide. Several local extirpations have been documented, beginning in the 1950fs. Bull trout continue to occur the Klamath River, Columbia River, Jarbidge River, St. Mary-Belly River, and Coastal-Puget Sound, in the states of Idaho, Montana, Nevada, Oregon, and Washington. Habitat Requirements and Limiting Factors Bull trout have more specific habitat requirements than most other salmonids. Habitat components that influence bull trout distribution and abundance include water temperature, cover, channel form and stability, substrate for spawning and rearing, and migratory corridors. Bull trout are found in colder streams and require colder water than most other salmonids for incubation, juvenile rearing, and spawning. Spawning and rearing areas are often associated with cold-water springs, groundwater infiltration, and/or the coldest streams in a watershed. Throughout their lives, bull trout require complex forms of cover, including large woody debris, undercut banks, boulders, and pools. Alterations in channel form and reductions in channel stability result in habitat degradation and reduced survival of bull trout eggs and juveniles. Channel alterations may reduce the abundance and quality of side channels, stream margins, and pools, which are areas bull trout frequently inhabit. For spawning and early rearing bull trout require loose, clean gravel relatively free of fine sediments. Because bull trout have a relatively long incubation and development period within spawning gravel (greater than 200 days), transport of bedload in unstable channels may kill young bull trout. Bull trout use migratory corridors to move from spawning and rearing habitats to foraging and overwintering habitats and back. Different habitats provide bull trout with diverse resources, and migratory corridors allow local populations to connect, which may increase the potential for gene flow and support or refounding of populations. Declines in bull trout distribution and abundance are the results of combined effects of the following: habitat degradation and fragmentation, the blockage of migratory corridors, poor water quality, angler harvest and poaching, entrainment (process by which aquatic organisms are pulled through a diversion structure or other device) into diversion channels and dams, and introduced iv normative species. Specific land and water management activities that continue to depress bull trout populations and degrade habitat include dams and other diversion structures, forest management practices, livestock grazing, agriculture, road construction and maintenance, mining, and urban and rural development. Some threats to bull trout are the continuing effects of past land management activities. Organization and Development of the Recovery Plan Because bull trout in the coterminous United States are widely distributed within a large area, the recovery plan is organized into multiple chapters. This introductory chapter (Chapter 1) describes our overall recovery strategy for the species, defines recovery, and identifies recovery actions applicable for all listed bull trout in the coterminous United States. Each successive chapter focuses on bull trout in specific geographic areas (recovery units), and describes conditions, defines recovery criteria, and identifies specific recovery actions for the recovery unit. Recovery Objectives The goal of this recovery plan is to describe the actions needed to achieve the recovery of bull trout, that is, to ensure the long-term persistence of self-sustaining, complex interacting groups (or multiple local populations that may have overlapping spawning and rearing areas) of bull trout distributed across the species' native range. Recovery of bull trout will require reducing threats to the long-term persistence of populations, maintaining multiple interconnected populations of bull trout across the diverse habitats of their native range, and preserving the diversity of bull trout life-history strategies (e.g., resident or migratory forms, emigration age, spawning frequency, local habitat adaptations). To recover bull trout, the following four objectives have been identified: ? Maintain current distribution of bull trout within core areas as described in recovery unit chapters and restore distribution where recommended in recovery unit chapters. ? Maintain stable or increasing trend in abundance of bull trout. ? Restore and maintain suitable habitat conditions for all bull trout life history stages and strategies. ? Conserve genetic diversity and provide opportunity for genetic exchange. ? These objectives apply to bull trout in all recovery units. Additional objectives may be necessary to achieve recovery in some recovery units and will be identified in the respective recovery unit chapters. Recovery Criteria Criteria are established to assess whether recovery objectives are being achieved. Criteria specific to each recovery unit are defined in each recovery unit chapter. Individual chapters may contain criteria for assessing the status of bull trout and alleviation of threats that are unique to one or several recovery units. However, every recovery unit chapter will contain criteria that address the following characteristics: ? The distribution of bull trout in identified and potential local populations in all core areas within the recovery unit. ? The estimated abundance of adult bull trout within core areas in the recovery unit, expressed as either a point estimate or a range of individuals. ? The presence of stable or increasing trends for adult bull trout abundance in the recovery unit. ? The restoration of passage at specific barriers identified as inhibiting recovery. We expect recovery of bull trout to be a dynamic process occurring over time. The recovery objectives are based on our current knowledge and may be refined as more information becomes available. Some local populations of bull trout, and possibly core area populations, may be extirpated even though recovery actions are being implemented. If reestablishment of recently extirpated populations is not feasible or practical, recovery criteria for a given recovery unit will be revised on a case-by-case basis. Meeting the four recovery criteria is not intended to be precluded where localized extirpations of bull trout are offset by sufficiently strong improvements in other areas of a recovery unit in meeting the four recovery objectives. The determination of whether a distinct population segment of bull trout is recovered will rely on an analysis of the overall status of the species, threats to the species, and the adequacy of existing regulatory and conservation mechanisms. For example, it may be possible for the Columbia River Distinct Population Segment, which has 22 recovery units, to be recovered prior to all recovery unit criteria being met in all recovery units. Success in accomplishing the recovery VI criteria will be reviewed and considered for the impacts both within a recovery unit and throughout a distinct population segment. Actions Needed Specific tasks falling within the following seven categories will be necessary to initiate recovery within all recovery units: ? Protect, restore, and maintain suitable habitat conditions for bull trout. ? Prevent and reduce negative effects of normative fishes and other normative taxa on bull trout. ? Establish fisheries management goals and objectives compatible with bull trout recovery and implement practices to achieve goals. ? Characterize, conserve, and monitor genetic diversity and gene flow among local populations of bull trout. ? Conduct research and monitoring to implement and evaluate bull trout recovery activities, consistent with an adaptive management approach using feedback from implemented, site-specific recovery tasks. ? Use all available conservation programs and regulations to protect and conserve bull trout and bull trout habitats. ? Assess the implementation of bull trout recovery by recovery units and revise recovery unit plans based on evaluations. Recovery Priority Number The recovery priority number for bull trout in the coterminous United States is 9C, on a scale of 1 to 18, indicating that (1) taxonomically, these populations are distinct population segments of a species, (2) the five populations are subject to a moderate degree of threat(s), (3) the recovery potential is high, and (4) the degree of potential conflict during recovery is high. vrr Estimated Cost of Recovery The total cost estimate of recovery for bull trout in the coterminous United States is presented in the individual recovery unit chapters. The costs presented in each chapter are attributed to bull trout conservation but other species will also benefit. Date of Recovery Expected time to achieve recovery varies among recovery units because of differences in bull trout status, factors affecting bull trout, implementation and effectiveness of recovery tasks, and responses to recovery tasks. Achieving bull trout recovery in all recovery units will be a complex process that will likely take 25 years or more. vin
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"GAO-05-211"; "April 2005"
Citation Citation
- Title:
- Endangered species : Fish and Wildlife Service generally focuses recovery funding on high priority species, but needs to periodically assess its funding decisions : report to the Chairman, Committee on Resources, House of Representatives
- Author:
- U.S. Fish and Wildlife Service
- Year:
- 2005
"GAO-05-211"; "April 2005"
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FINAL ECONOMIC ANALYSIS OF CRITICAL HABITAT DESIGNATION FOR THE BULL TROUT September 2004 FINAL ECONOMIC ANALYSIS OF CRITICAL HABITAT DESIGNATION FOR THE BULL TROUT Prepared for: Division of Economics U. ...
Citation Citation
- Title:
- Final economic analysis of critical habitat designation for the bull trout
- Author:
- U.S. Fish and Wildlife Service
- Year:
- 2004, 2005
FINAL ECONOMIC ANALYSIS OF CRITICAL HABITAT DESIGNATION FOR THE BULL TROUT September 2004 FINAL ECONOMIC ANALYSIS OF CRITICAL HABITAT DESIGNATION FOR THE BULL TROUT Prepared for: Division of Economics U. S. Fish and Wildlife Service 4401 N. Fairfax Drive Arlington, VA 22203 Prepared by: Bioeconomics, Inc. 315 S. 4th E. Missoula, MT 59801 TABLE OF CONTENTS EXECUTIVE SUMMARY ES- 1 1 INTRODUCTION AND BACKGROUND 1- 1 1.1 Description of Species and Habitat 1- 2 1.2 Proposed Critical Habitat 1- 5 1.3 Framework and Methodology 1- 6 1.3.1 Types of Economic Effects Considered 1- 6 1.3.2 Defining the Baseline 1- 9 1.3.3 Direct Compliance Costs 1- 10 1.3.4 Indirect Costs 1- 10 1.3.5 Benefits 1- 14 1.3.6 Analytic Time Frame 1- 15 1.3.7 General Analytic Steps 1- 15 1.4 Information Sources 1- 16 2 RELEVANT BASELINE INFORMATION 2- 1 2.1 Socioeconomic Profile of the Critical Habitat Areas 2- 1 2.1.1 Population 2- 1 2.1.2 Land Ownership and Major Uses 2- 2 2.1.3 Employment 2- 12 2.1.4 Economic and Demographic Characteristics of the 74 Counties Containing Bull Trout Critical Habitat 2- 15 2.1.5. Tribes of the Columbia and Klamath Basins 2- 18 2.2 Baseline Elements 2- 21 2.2.1 Recovery Plan 2- 21 2.2.2 Overlap with Other Listed Species 2- 22 2.2.3 Federal and State Statutes and Regulations 2- 25 2.2.4 Summary Discussion of Impacts of Baseline Regulations on Economic Analysis 2- 40 2.2.5 Discussion: Impacts of Existing Fisheries Policies on Timber and Grazing Activities 2- 43 3 FORECASTED ECONOMIC IMPACTS 3- 1 3.1 Categories of Economic Impacts 3- 1 3.1.1 Section 7 Consultations 3- 2 3.1.2 Technical Assistance 3- 4 3.1.3 Project Modifications 3- 5 3.1.4 Distributional and Regional Economic Effects 3- 5 3.2 Consultation History for Bull Trout Since Listing 3- 7 3.2.1 Action Agencies and Activities Involved in Past Bull Trout Consultations 3- 7 3.2.2 Formal Section 7 Consultations History on Bull Trout Since Listing . 3- 13 3.2.3 Informal Section 7 Consultations History on Bull Trout 3- 15 3.3 Project Modifications 3- 16 3.3.1 Modifications to FHWA Bridge Projects 3- 16 3.3.2 Modifications to Grazing Permits 3- 17 3.3.3 Modifications to Timber Harvest 3- 18 3.3.4 Modifications to Mining Operations 3- 20 3.3.5 Modifications to Agricultural Irrigation Projects 3- 21 3.3.6 Modifications to Dams and Hydroelectric Projects 3- 24 3.3.7 Modifications to Forest Management and Road Maintenance Projects 3- 29 3.3.8 Activities Unlikely to Involve Significant Modification 3- 29 3.4 Projected Future Section 7 Consultations Involving the Bull Trout 3- 29 3.4.1 Projected Future Formal Section 7 Consultations 3- 33 3.4.2 Projected Future Informal Section 7 Consultations 3- 36 ESTIMATING THE CO- EXTENSIVE COSTS OF THE DESIGNATION 4- 1 4.1 Summary of Estimated Impacts 4- 2 4.1.1 Annual Administrative Costs of Consultation 4- 2 4.1.2 Costs Associated with Development of HCPs Within Proposed Bull Trout Critical Habitat 4- 3 4.1.3 Annual Bull Trout Project Modification Costs 4- 4 4.1.4 Proposed Critical Habitat Units Expected to Generate the Greatest Economic Impacts 4- 5 4.2 Discussion of Impacts by Action Agency 4- 6 4.2.1 Army Corps of Engineers 4- 7 4.2.2 Bureau of Land Management 4- 9 4.2.3 Bonneville Power Administration 4- 10 4.2.4 Bureau of Reclamation 4- 25 4.2.5 Federal Highway Administration 4- 29 4.2.6 Federal Energy Regulatory Commission 4- 31 4.2.7 U. S. Forest Service 4- 52 4.2.8 Other Action Agencies 4- 79 4.3 Potential Impacts on Small Entities 4- 79 4.3.1 Identifying Activities That May Involve Small Entities 4- 81 4.3.2 Costs Associated with Agriculture Water Diversions 4- 83 4.3.3 Hydroelectric Facility Re- licensing 4- 84 4.3.4 Mining 4- 87 4.4 Potential Impacts on the Energy Industry 4- 88 4.4.1 Evaluation of Whether the Designation will Result in a Reduction in Electricity Production in Excess of One Billion Kilowatt- Hours Per Year or in Excess of 500 Megawatts of Installed Capacity 4- 89 4.4.2 Evaluation of Whether the Designation will Result in an Increase in the Cost of Energy Production in Excess of One Percent 4- 91 APPENDIX A: Detailed Description of Critical Habitat Units A- l APPENDIX B: Ownership of Lands Adjacent to Proposed Critical Habitat Unit and Subunit B- l APPENDIX C: Overlap of Proposed Bull Trout Critical Habitat and Salmon and Steelhead Habitat C- l APPENDIX D: Listing of All Suggested Project Modifications Found in Formal Biological Opinions: By Activity Type D- l APPENDIX E: Length ( stream) and area ( lakes) of proposed designated bull trout critical habitat that is within U. S. Forest Service Land and Forest Service Wilderness Areas E- l APPENDIX F: Breakdown of Total Annual Estimated Costs by Proposed Critical Habitat Unit F- l EXECUTIVE SUMMARY 1. The purpose of this report is to identify and analyze the potential economic impacts associated with the designation of critical habitat for the Columbia River and Klamath River Distinct Population Segments ( DPSs) of bull trout ( Salvelinus confluentus), hereafter " bull trout." This report was prepared by Bioeconomics, Inc. of Missoula, Montana, for the U. S. Fish and Wildlife Service's ( the Service) Division of Economics. 2. Section 4( b)( 2) of the Endangered Species Act ( the Act) requires the Service to designate critical habitat on the basis of the best scientific data available, after taking into consideration the economic impact, and any other relevant impact, of specifying any particular area as critical habitat. The Service may exclude areas from critical habitat designation when the benefits of exclusion outweigh the benefits of including the areas within critical habitat, provided the exclusion will not result in extinction of the species. KEY FINDINGS Total costs associated with both listing and critical habitat designation for the bull trout are forecast to be $ 200 million to $ 260 million over the next ten years. Total costs associated with both listing and critical habitat designation for the bull trout within the proposed Klamath Distinct Population Segment are forecast to be $ 5.3 million to $ 7.3 million over the next ten years. Total costs associated with both listing and critical habitat designation for the bull trout within the proposed Columbia Distinct Population Segment are forecast to be $ 195 million to $ 253 million over the next ten years. Federal agencies are expected to bear 70 to 75 percent of these costs; private entities will incur the remaining 25 to 30 percent. Project modification costs account for as much as 63 percent of forecast costs. Administrative cost represent the remaining 37 percent. U. S. Forest Service and Army Corps of Engineer- related activities account for approximately 70 percent of forecast project modification costs. Activities experiencing the greatest costs include timber harvesting, irrigation diversions, and dam and reservoir operations. Dam and reservoir- related consultations, including power facility re- licensing, account for 42 percent of forecast project modification costs ( excluding the cost associated with reduced irrigation diversions). Timber harvest, irrigation diversions, habitat conservation plans, and mining account for 29 percent, 12 percent, eight percent, and three percent of forecast costs, respectively. In terms of river miles, approximately 18 percent of the total forecast costs are associated with one percent of the proposed designation, 25 percent with five percent of the proposed designation, and 45 percent with ten percent of the proposed designation. When expressed in terms of the expected cost per river mile, the two most costly units are the Willamette River Basin ( Unit 4) and the Malheur River Basin ( Unit 13). ES- 1 Framework for the Analysis 3. The primary purpose of this analysis is to estimate the economic impact associated with the designation of critical habitat for the bull trout. This information is intended to assist the Secretary in making decisions about whether the benefits of excluding particular areas from the designation outweigh the benefits of including those areas in the designation. 1 This economic analysis considers the economic efficiency effects that may result from the designation, including habitat protections that may be co- extensive with the listing of the species. It also addresses distribution of impacts, including an assessment of the potential effects on small entities and the energy industry. This information can be used by decision- makers to assess whether the effects of the designation might unduly burden a particular group or economic sector. 4. This analysis focuses on the direct and indirect costs of the rule. However, economic impacts to land use activities can exist in the absence of critical habitat. These impacts may result from, for example, local zoning laws, State and natural resource laws, and enforceable management plans and best management practices ( BMPs) applied by other State and Federal agencies. For example, as discussed in detail in this report, regional management plans, such as the Northwest Forest Plan, PACFISH and INFISH provide significant protection to bull trout and its habitat while imposing significant costs within the region. Economic impacts that result from these types of protections are not included in this assessment as they are considered to be part of the regulatory and policy " baseline." 5. The measurement of direct compliance costs focuses on the implementation of section 7 of the Act. This section requires Federal agencies to consult with the Service to ensure that any action authorized, funded, or carried out will not likely jeopardize the continued existence of any endangered or threatened species or result in the destruction or adverse modification of critical habitat. The administrative costs of these consultations, along with the costs of project modifications resulting from these consultations, represent the direct compliance costs of designating critical habitat. Importantly, this analysis does not differentiate between consultations that result from the listing of the species ( i. e., the jeopardy standard) and consultations that result from the presence of critical habitat ( i. e., the adverse modification standard). 6. The analysis examines activities taking place both within and adjacent to the proposed designation. It estimates impacts based on activities that are " reasonably foreseeable," including, but not limited to, activities that are currently authorized, permitted, or funded, or for which proposed plans are currently available to the public. Accordingly, the analysis bases estimates on activities that are likely to occur within a ten- year time frame, beginning on the day that the current proposed rule became available to the public ( November 30, 2002). The ten- year time frame was chosen for the analysis because, as the time horizon for an economic analysis is expanded, the assumptions on which the projected number of projects and cost impacts associated with those projects becomes increasingly 1 16U. S. C. § 1533( b)( 2). ES- 2 speculative. An exception to the 10 year analysis time horizon used in this analysis is for Federal Energy Regulatory Commission ( FERC) licenses, which are renewed for up to 50 years. Accordingly, this analysis estimates the annualized costs of the expected impacts associated with section 7 bull trout consultations involving FERC re- licensing over a 50 year time horizon. 7. The analysis is based on a wide range of information sources. Numerous individuals were contacted from the Service, as well as from the U. S. Forest Service ( USFS), Federal Highway Administration ( FHWA), Bureau of Land Management ( BLM), Army Corps of Engineers ( ACOE), Bureau of Reclamation ( BOR), Bonneville Power Administration ( BPA), Natural Resources Conservation Service ( NRCS), U. S. Environmental Protection Agency ( EPA), National Oceanic and Atmospheric Administration ( NOAA) and other Federal agencies. The analysis of the hydroelectric facilities and other dam structures in the region also relied in information from the Northwest Power and Conservation Council ( NWPCC), the Pacific Northwest Utility Coordinating Council as well as information from utilities owning dams in bull trout proposed critical habitat ( e. g., Avista Corporation ( Avista), Eugene Water and Electric Board, Pacificorp and Portland General Electric ( PGE)). Native American Tribes ( e. g., Confederated Salish and Kootenai Tribes), State agencies ( e. g., State Departments of Environmental Quality ( DEQ) and State Departments of Transportation ( DOTs)) and industry organizations ( e. g., American Forest Resource Council, American Farm Bureau and Northwest Mining Association) were also contacted, as were numerous individuals in the private sector on topics ranging from irrigation to forestry to bull trout conservation. Census Bureau and other Department of Commerce data was relied on to characterize the regional economy. 8. The bull trout was listed as a threatened species in 1998.2 Since that time, numerous Action agencies have participated in well over 200 formal consultations and thousands of informal consultations involving bull trout. The past consultation record was used as a starting point from which to predict future consultation activity. Action agencies provided additional information on likely changes in future consultation activity following designation of critical habitat. In some cases these agencies saw little change in future consultation levels. For example, FHWA projects are planned for many years in advance and bridge or road- related bull trout consultations are generally quite certain and foreseeable. In some cases ( e. g., mining activity, irrigation diversions) it was determined that the historical consultation record understated the potential level of future consultation activity for the species and adjustments to future predicted consultation levels were made. For dam and reservoir operations, a wide spectrum of information from agency representatives, as well as the actual FERC re- licensing schedules for privately operated hydropower facilities were used to augment historical consultation rates and develop future annual cost estimates associated with bull trout consultations on dam, reservoir and power- related activities. 2 This economic analysis applies only to the Columbia River and Klamath River DPSs of bull trout and is not a rangewide analysis. The rangewide listing of the bull trout occurred in 1999 and critical habitat will be proposed for the remainder of the range at a later date. ES- 3 Exhibit ES. l provides a summary of the wide range of activities that may be impacted by bull trout- related consultations. Exhibit ES. l PROJECTED ACTIVITIES AFFECTED BY BULL TROUT Action Agency Army Corps of Engineers Bureau of Land Management Bonneville Power Administration Bureau of Reclamation Federal Highway Commission Federal Energy Regulatory Commission U. S. Forest Service Other agencies, including NPS, BIA, U. S. Department of Agriculture ( USDA), U. S. Geological Survey ( USGS), U. S. Fish and Wildlife Service and NOAA Fisheries Activities Consulted on Dam and reservoir operations, streambank stabilization, dredging, bridge replacement, stream restoration. Forest management, grazing, timber harvest, resource maintenance and road construction, weed management, streambank stabilization, flood control projects. Federal Columbia River Power System ( FCRPS)- dam operation, fisheries restoration and augmentation, agricultural practices and irrigation systems. Dam and reservoir operations, irrigation diversions. Highway bridge replacement. Dam re- licensing and removal. Timber harvest, grazing, mining, resource maintenance and road construction, weed management, streambank stabilization, recreation, special use permits, watershed restoration, road decommissioning, irrigation diversions, culvert replacement, and prescribed fuel reduction programs. Assorted activities, primarily fisheries and stream and wetland restoration. Results of the Analysis 9. The economic impacts associated with the designation of critical habitat for the bull trout are expected to range from $ 200 million to $ 260 million over the next ten years ($ 20 million to $ 26 million per year). Federal agencies are expected to bear approximately 70 to 75 percent of the total costs of this designation. A significant portion of the land adjacent to the proposed designation is Federally owned ( 58 percent), 36 percent is under private ownership and the remainder is comprised of Tribal, State or local interests. Of the Federal lands, the majority is managed by the USFS ( 85 percent) and the BLM ( 12 percent). The remaining 25 to 30 percent of costs are expected to be borne by private entities. Exhibit ES. 2 shows the location of USFS and BLM managed land within the proposed designation. ES- 4 Exhibit ES. 2 ES- 5 10. In some cases, the cost associated with consultation is not borne by the Action agency, but passed onto other parties. For example, while farmers and ranchers do not consult on the operation of Federal irrigation impoundments, irrigators could be impacted by potential reductions in water deliveries to maintain instream flow during dry years. While the unit location of USFS- related water diversions is uncertain, it is likely to occur in the Salmon River ( Unit 16), Clark Fork ( Unit 2), Southwest Idaho River and Clearwater River ( Unit 15) Basins, as these units contain the largest portion of USFS managed lands. 11. Consultations that may involve private entities include those related to timber harvest, grazing, mining and power facility re- licensing. Some of the costs associated with these consultations, however, are expected to be borne directly by or passed onto the Federal government ( e. g., increased logging and yarding costs passed onto the USFS through lower stumpage bids for timber). Most of the forecast project modification costs resulting from designation ( 42 percent) are dam and reservoir related ( excluding USFS water diversions). These costs result from consultations on ACOE and BOR dams and reservoirs, BPA consultations on the FCRPS, and FERC re- licensing consultations. Exhibit ES. 3 illustrates the location of major dams within the proposed critical habitat. The remaining project modification costs are associated with timber harvest ( 29 percent), USFS- related water diversions ( 12 percent), habitat conservation plans ( eight percent), and placer gold mining ( three percent). Grazing, forest management, road and bridge construction and maintenance and other activities each account for less than two percent of forecast project modification costs. Exhibit ES. 4 provides the distribution of total costs by activity. 12. Costs can be expressed in terms of unit or river mile; both of these metrics are useful in describing economic impacts. 3 On a cost per unit basis the largest portion of forecast costs are expected to occur in Unit 4, the Willamette River Basin ( 18 percent). These costs are attributable to fish passage and temperature control projects and annual operating and maintenance and fish study costs at ACOE's facilities in the Upper Willamette River System ( Dexter, Lookout Point, Hills Creek and Blue River Dams). The next most costly unit is Unit 16, the Salmon River Basin ( 12 percent). Because this is the largest unit in terms of river miles and proportion of USFS managed land, and because future USFS activities are expected to generate approximately 70 percent of the consultation activity, this unit bears the greatest number of future bull trout- related consultations. Therefore, the administrative costs account for a large portion of the costs in this unit. Together, these two units account for 30 percent ( approximately $ 8.2 million) of forecast costs. The next three most costly units, Hells Canyon complex ( Unit 12) and the Clark Fork River ( Unit 2) and Malheur River ( Unit 13) Basins, each account for eight percent ( a unit cost range of approximately $ 2.1 million to $ 2.3 million) of forecast costs. In total, these five units account for almost 55 percent of forecast costs ( approximately $ 14.8 million). 3 Twelve of the units also contain more than 500,000 lake acres of critical habitat. These units account for approximately 55 percent of the potential economic impacts associated with the proposed designation ($ 15.4 million). The Clark Fork River Basin ( Unit 2) contains almost 60 percent of the lake acres ( more than 300,000 acres) and accounts for eight percent of the cost ( approximately $ 3 million). Because all 25 units contain river miles, the costs are expressed in terms of dollars per river mile for comparison. ES- 6 ES- 7 ES- 8 13. Project modifications or other restrictions that engender cost and revenue impacts involving commercial enterprises can have a subsequent detrimental effect on other sectors of the local economy, especially when the affected industry is central to the local economy. Industries within a geographic area are interdependent in the sense that they purchase output from other industries and sectors, while also supplying inputs to other businesses. Therefore, direct economic effects on a particular enterprise can affect regional output and employment in multiple industries. The extent to which regional economic impacts are realized depends largely on whether a significant number of projects are stopped or fundamentally altered. For example, impacts to the timber or grazing industries depend on whether required project modifications substantially reduce output within economic sectors below that which would be seen in the absence of the trout consultation. 14. Examination of BOs involving timber harvest and grazing show only small and sporadic reductions in either grazing opportunity or available timber harvest. Therefore, this analysis assumes that regional economic impacts associated with these activities will be unpredictable ( in terms of geographic location and timing) and small in the context of the overall economy of the Columbia River Basin. In the case of agricultural water diversions on Forest Service lands, regional economic impacts are not modeled due to uncertainty about the magnitude and potential location of impacts. 15. Exhibit ES- 5 highlights the relative contributions of each unit to total forecast costs. Exhibit ES- 6 then presents the unit cost by river mile. Considering the cost per river mile, the Willamette River ( Unit 4) and Malheur River ( Unit 13) Basins are the most costly units. Together these two units account for 25 percent of the costs ( approximately $ 7.0 million, annualized) over two percent of the proposed miles of the designation ( 451 miles). Overall, 10 percent of the river miles ( 1,910 miles) in eight units account for approximately 45 percent of the total costs ( approximately $ 12.5 million, annualized). 4 4 In terms of cost per lake acre, the Willamette River Basin is the most expensive unit ( Unit 4), followed by the Northeast Washington River ( Unit 22) and Upper Columbia River ( Unit 21) Basins. These three units account for approximately 25 percent of the cost ($ 6.8 million) and five percent of the river miles ( 1,020 miles) in the proposed designation. ES- 9 tn m W GO 16. Consideration of the regulatory baseline is particularly pertinent in the context of estimating economic costs attributable to section 7 for bull trout. Specifically, existing regulations such as the Federal Power Act ( FPA) and Wilderness Act of 1964, fisheries management directives ( Northwest Forest Plan, INFISH and PACFISH) and the presence of other listed species ( especially anadromous fish) provide for the protection of areas that could contribute to the recovery of bull trout and improve riparian habitat and water quality throughout the proposed designation. Thus, the costs of this designation is limited by the extent to which existing regulations already impose requirements on land use and resource management within the proposed designation. In addition, the cost estimates developed in this report reflect various allocations made throughout the analysis for projects benefitting more than one listed species. Since these allocations are important to the analysis, Exhibit ES. 7 describes how forecasted costs were allocated among bull trout and other listed species. Exhibit ES. 7 ALLOCATION OF ESTIMATED FUTURE PROJECT MODIFICATION COSTS Agency / Project ACOE - Upper Willamette River Dams and Reservoirs BPA - Federal Columbia River Power System FERC - re- licensing hydroelectric facilities USFS activities Allocation NOAA Fisheries and the Service are currently consulting on salmon, steelhead and bull trout in this proposed area. No clear allocation of costs can be made between these species, as most of the projects modifications would be sought under both the NOAA and Service consultations. Therefore, one- third of estimated costs are allocated to each species. This is likely to overstate the cost of bull trout conservation rather than understate it, since the primary driving force behind these project modifications is the salmon. While there is extensive discussion of the relative magnitude of potential bull trout versus salmon mitigation actions, because of the relatively modest project modification costs ( up to $ 400,000 associated with fishery studies) there is no allocation of costs to salmon. The estimation of section 7 bull trout costs associated with FERC re- licensing includes allocation of mitigation costs for specific dams to salmon, as well as to other aquatic species. As a result, a little more than 40 percent of total fishery-related costs are allocated to bull trout, and five percent specifically to bull trout section 7 consultation. While certain costs in the sample of timber consultations were allocated to other listed species ( e. g. grizzlies and cutthroat trout), there is no allocation of costs to anadromous species. Summary of Costs 17. Exhibit ES. 8 provides a detailed summary of the co- extensive costs of designation of critical habitat for the bull trout. These costs are presented on an annualized basis. A map of the watersheds that encompass each unit is provided in Exhibit ES. 9 to assist the reader in understanding the location and distribution of estimated costs. A detailed discussion of the estimated administrative and project modification costs by critical habitat unit is presented in the unit- by- unit summary section following Exhibit ES. 8. ES- 12 Exhibit ES. 8 SUMMARY OF SECTION 7 COSTS FOR THE BULL TROUT ( Annualized) Unit Unit 1 - Klamath River Basin Unit 2 - Clark Fork River Basin Unit 3 - Kootenai River Basin Unit 4 - Willamette River Basin Unit 5 - Hood River Basin Unit 6 - Deschutes River Basin Unit 7 - Odell Lake Unit 8 - John Day River Basin Unit 9 - Umatilla- Walla Walla River Basins Unit 10 - Grande Ronde River Basin Unit 11 - Imaha/ Snake River Basins Unit 12 - Hells Canyon Complex Unit 13 - Malheur River Basin Unit 14 - Coeur d'Alene Lake Basin Unit 15 - Clearwater River Basin Unit 16 - Salmon River Basin Unit 17 - Southwest Idaho River Basins Unit 18 - Little Lost River Basin Unit 19 - Lower Columbia River Basin Unit 20 - Middle Columbia River Basin Unit 21 - Upper Columbia River Basin Unit 22 - Northwest Washington River Basins Unit 23 - Snake River Basin in Washington Unit 24 - Columbia River Basin Unit 25 - Snake River Basin Multiple unit or unknown a Estimated Range of Cost ($ l, 000fs) $ 529 to $ 733 $ 1,321 to $ 2,192 $ 328 to $ 402 $ 4,497 to $ 4,891 $ 328 to $ 413 $ 430 to $ 719 $ 51 to $ 56 $ 446 to $ 600 $ 98 to $ 211 $ 467 to $ 580 $ 559 to $ 605 $ 1,939 to $ 2,338 $ 2,006 to $ 2,095 $ 429 to $ 693 $ 995 to $ 1,676 $ 2,059 to $ 3,319 $ 1,004 to $ 1,867 $ 150 to $ 176 $ 385 to $ 494 $ 391 to $ 494 $ 196 to $ 505 $ 965 to $ 1,397 $ 230 to $ 287 $ 243 to $ 504 $ 135 $ 1,303 Notes: These estimates include all section 7 costs, including those co- extensive with the listing and designation of critical habitat for the bull trout. Costs are reported in 2003 dollars. A more detailed presentation of these costs is provided in Appendix F. a Miscellaneous costs ($ 213,000 annually) and the costs associated with development of habitat conservation Dlans ($ 1,090,000 annuallv) have not been allocated to the unit level due to uncertainty as to their location. ES- 13 Exhibit ES- 9 ES- 14 Unit- bv- Unit Summary 18. The following discussion presents a unit- by- unit synopsis of the co- extensive costs of designation of critical habitat for the bull trout. Details on how these cost estimates were developed is provided in Section 4 of this report. 19. From an aggregate perspective, forecast project modification costs are dominated by dam related activities, totaling about 42 percent of all estimated costs. Typical costs include fish passage, changes in operations, habitat protection or restoration, and fishery studies at 36 FERC- licensed hydroelectric facilities and at more than 30 major Federal hydropower, irrigation and flood projects. The second largest category of costs is associated with timber harvest on Federal lands, representing about 29 percent of all estimated costs. These costs include harvest reduction, fishery study and monitoring costs, costs related to roads and culverts, and changes to log yarding systems. The remaining costs are split among a large number of activities including the development of habitat conservation plans, mining, agriculture and irrigation diversions, grazing, bridge construction and maintenance, and general forest management. Accordingly, the primary factor driving the distribution of costs across units is the location of significant dam projects for power, irrigation, and flood control. This factor is highlighted in the following unit- by- unit discussion. The second most important factor is the occurrence of federally- owned acreage within a given unit, particularly the acreage of non- wilderness lands managed by the USFS. This factor drives both timber costs and administrative consultation costs. 20. A significant component of the total estimated cost of this designation are the administrative costs associated with conducting both formal and informal consultations on the species ( approximately 37 to 50 percent of total forecast bull trout- related costs). These costs accrue to the Service as well as to action agencies and the public. In some cases these administrative costs constitute a majority of the estimated costs for a unit, suggesting that there will be many activities consulted on but few resulting project modifications. 21. This discussion is presented on a unit by unit basis. A perspective on how the units compare, in both absolute terms and in terms of cost per river mile of proposed critical habitat, is provided in Exhibits ES- 6 and ES- 7. For purposes of this summary, proposed units with per mile costs ( after adjusting each unit's costs for its respective unoccupied habitat) forecast to be less than half of the proposed designation- wide average are described as having " relatively low costs." Units with per mile costs forecast to be between 50 percent and 200 percent ( i. e., twice) the designation- wide average costs are described as having " relatively moderate costs." Units with per- mile costs forecast to be greater than twice the designation- wide average costs are described as having " relatively high costs." Note that these descriptors are intended as a general guide, and refer to total cost only. Individual economic sectors and entities within a unit may bear disproportionate shares of these costs, as discussed in Section 4. 22. Unit 1: Klamath River Basin - The Klamath River Basin is located in south- central Oregon. Proposed critical habitat within this unit includes 475 km ( 295 mi) of streams and ES- 15 3,775 ha ( 9,327 ac) of lake habitat. The Klamath River Basin Unit is largely contained within Klamath County Oregon. The town of Klamath Falls is the largest community within the county. The Klamath River Basin Unit has a relatively high percentage of proposed critical habitat that is currently either unoccupied or of unknown occupancy ( 72 percent). Approximately 69 percent of the stream miles proposed for designation are within Federal land. 23. The Klamath River Basin Unit is a relatively moderate cost unit. Estimated total annual bull trout- related costs within this unit range between $ 529,000 and $ 733,000. These estimates include $ 425,000 per year in administrative costs. It is estimated that costs associated with consultations on timber harvest and agricultural irrigation withdrawals will constitute the large majority of potential future project modification costs in the unit ( estimated at between 73 percent and 87 percent of total annual project modification costs). These agricultural diversion- related costs are expected to result from reductions in available irrigation water. Other activities are individually estimated to each account for less than $ 15,000 dollars per year in project modification costs. 24. Unit 2: Clark Fork River Basin - The Clark Fork River Basin Unit is the largest unit within the proposed designation. This unit includes most of Western Montana and the Idaho panhandle. This Unit includes the Missoula and Bitterroot River Valleys in Western Montana, the Kalispell- Flathead Lake Region, and the Lake Pend Orielle Region of North Idaho. These areas contain many of the larger towns and communities within Western Montana and North Idaho. Approximately 54 percent of the proposed streams and 33 percent of proposed lakes in Clark Fork Unit are within Federal lands. There is no unoccupied habitat within the proposed Clark Fork Critical Habitat Unit. 25. Forecast total annual costs associated with the bull trout within this unit are between $ 1.3 million and $ 2.2 million. These estimates include $ 800,000 per year in administrative costs. In addition, a number of agencies and activities will incur significant annual project modification costs associated with the bull trout in this unit. Specifically, • Timber harvest activity is expected to generate the largest share of future project modification costs in this unit ($ 270,000 to $ 680,000 per year). These costs include harvest reduction, fishery study and monitoring costs, costs related to road and culverts, and changes to log yarding systems. • Costs associated with forecast project modifications to irrigation diversions within this unit range from zero to $ 280,000. These costs represent potential costs to agricultural producers associated with reductions in available irrigation water. 26. Other significant forecast project modification costs within this unit are associated with mining ( up to $ 100,000 annually, principally involving watershed assessment costs), FERC hydro re- licensing ($ 50,000 to $ 91,000 annually), and FHWA bridge and road work ($ 45,000 per year, generally involving constraints on in- stream work periods). Forecast FERC- related costs are associated with several major hydroelectric facilities within the unit, ES- 16 including Kerr Dam on the Flathead River and Thompson Falls Dam on the Clark Fork. Additionally, bull trout- related modifications on operation of the FCRPS have resulted in changes in operations at Hungry Horse Dam ( a BOR facility on the S. Fork of the Flathead) and Albeni Falls ( an ACOE facility that controls the level of Lake Pend Orielle). Bull trout study costs specific to the Clark Fork Unit and associated with FCRPS consultation are expected to cost up to $ 97,000 annually. 27. Although the proposed Clark Fork River Basin Critical Habitat Unit has significant forecast total annual costs, these costs should be viewed in light of the large size of this proposed unit. In fact, the Clark Fork Unit is forecast to be one of the lowest cost units, when expressed per river mile of habitat proposed for designation. 28. Unit 3: Kootenai River Basin - A short stretch of the Kootenai River lies in the U. S., looping down out of British Columbia. The Kootenai Unit thus comprises only the northwestern corner of Montana, including Libby Dam, and the northeastern tip of the Idaho panhandle. This unit is contained within two counties, Boundary County, Idaho and Lincoln County, Montana. Within this proposed critical habitat unit, approximately 53 percent of the rivers and streams proposed for designation are on Federal land. There is no unoccupied bull trout habitat within this unit. 29. The Kootenai River Unit is a relatively low- cost unit, in terms of forecast costs per river mile of habitat proposed for designation. Total forecast annual costs associated with the bull trout within this unit are between $ 328,000 and $ 402,000. Of this amount, the majority, approximately $ 290,000 annually, are forecast administrative costs. In addition, it is estimated that project modification costs within the Kootenai River Unit will total between $ 38,000 and $ 112,000 annually. Costs associated with timber harvest are expected to be the largest category of future project modification costs in this unit ($ 27,000 to $ 69,000 per year, including costs of harvest reduction, fishery study and monitoring costs, costs related to roads and culverts, and changes to log yarding systems). Costs resulting from modifications to agricultural irrigation diversions ( primarily reductions in irrigation withdrawals) could range from zero to $ 28,000. Other activities are individually estimated to each account for less than $ 5,000 per year in project modification costs. Bull trout- related modifications to operations of the FCRPS have resulted in changes in operations at Libby Dam. 30. Unit 4: Willamette River Basin - The Willamette River Basin Unit includes 337 km ( 209 mi) of stream and 1,600 ha ( 3,954 ac) of lake habitat in the McKenzie River and Middle Fork Willamette River subbasins of Western Oregon. The unit is located primarily within Lane County, but also extends into Linn County. The unit contains Eugene, Oregon and surrounding areas. Approximately 46 percent of the proposed waters within this unit are on Federal land and about 23 percent of the waters in the unit are currently either unoccupied by the bull trout or of unknown occupancy. 31. Forecast total annual costs associated with the bull trout within this unit are between $ 4.5 million and $ 4.9 million. Of this amount, approximately $ 125,000 are forecast ES- 17 administrative costs. Thus, most of the costs for this unit are associated with required project modifications. While project modification costs are forecast to be associated with timber harvest activities and agricultural diversions within this unit ( estimated between $ 22,000 and $ 55,000 annually), the vast majority of forecast costs are associated with dam and reservoir operations in the unit. 32. The ACOE is currently in consultation on 13 flood control facilities located in the Upper Willamette River system. Potential future costs of required modifications for bull trout will likely be driven by provisions for temperature control facilities at the Lookout Point, Hills Creek, and Blue River dams, and trap and haul passage at Lookout Point, Hills Creek, and possibly a fish ladder at Dexter Dam. It is estimated that these passage and temperature control modifications and operation at ACOE operated impoundments in the unit will cost between $ 4.3 and $ 4.5 million per year. It is further estimated that annual project modification costs associated with FERC re- licensing of hydroelectric facilities in the unit will cost between $ 70,000 and $ 144,000 annually. These costs are associated with several hydroelectric facilities operated by the City of Eugene: Trail Bridge and Carmen on the McKenzie River, and Blue River Dam. 33. The Willamette River Unit is the highest cost of the proposed units in terms of forecast cost per river mile of habitat proposed for designation ( greater than $ 20,000 per river mile, annually). These costs are associated with dam and reservoir modifications to ACOE projects. However, the ACOE is also consulting with NOAA Fisheries on the impacts of these facilities on chinook salmon and steelhead, these costs might occur even absent the bull trout. 34. Unit 5: Hood River Basin - The Hood River Unit lies entirely within Hood River County, Oregon and contains the communities of Hood River and The Dalles among a number of smaller towns. The Unit includes the mainstem Hood River and three major tributaries: the Clear Branch Hood River, West Fork Hood River, and East Fork Hood River. A relatively high 43 percent of the proposed habitat in the Hood River Unit is currently either unoccupied or of unknown occupancy. Overall, about 48 percent of the waters proposed for designation within this unit are located on Federal lands. 35. The Hood River Unit is a relatively moderate- cost unit, in terms of forecast costs per river mile of habitat proposed for designation. Forecast total annual costs associated with the bull trout within this unit are between $ 328,000 and $ 413,000. Of this amount, a substantial portion are forecast administrative costs ( approximately $ 282,000). The remainder of the forecast costs are associated with required project modifications. Costs associated with FERC re- licensing of hydroelectric facilities ($ 24,000 to $ 67,000) and timber harvest on USFS lands ($ 16,000 to $ 40,000 per year) are expected to be the most significant categories of future project modification costs in the unit. FERC licensed facilities include Powerdale on the Hood River. Agricultural irrigation diversions in the unit could experience up to $ 16,000 in annual project modification costs. Other activities are individually estimated to account for less than $ 5,000 per year in project modification costs. ES- 18 36. Unit 6: Deschutes River Basin - The Deschutes River Basin Unit in central Oregon contains two critical habitat subunits: the lower Deschutes and the upper Deschutes, separated by Big Falls, an impassible barrier on the Deschutes River. The Lower Deschutes critical habitat subunit is in Wasco, Sherman, Jefferson, Deschutes, and Crook Counties. The Upper Deschutes River critical habitat subunit is located in Deschutes, Crook, and Klamath counties. Approximately 801 km ( 498 mi) of stream habitat in the Deschutes River basin is proposed for critical habitat designation. Overall, a relatively high 37 percent of the proposed habitat within the Deschutes River Unit is unoccupied. The entire upper Deschutes River Critical Habitat subunit is currently unoccupied by the species. A relatively low portion ( 35 percent) of the waters proposed for designation within this unit are on Federal land. This unit also has a substantial amount of Tribal land ( 23 percent of proposed waters). 37. The Deschutes River Unit is a relatively low- cost unit, in terms of forecast costs per river mile of habitat proposed for designation. It is forecast that total annual costs associated with the bull trout within this unit will be between $ 431,000 and $ 719,000. A relatively small portion of this amount, approximately $ 102,000 annually, are forecast administrative costs. The vast majority of these costs are associated with required project modifications. Specifically, costs associated with operation of BOR irrigation impoundments ($ 159,000 annually, largely associated with fishery studies), FERC re- licensing of hydroelectric facilities, ($ 106,000 to $ 280,000) and timber harvest on USFS lands ($ 42,000 to $ 105,000 per year resulting from reduced harvest, fishery studies, road and culvert costs, and changes in yarding systems) are expected to be the most significant categories of future project modification costs in this unit. The BOR- related costs are for studies at Crane Prairie and Wickiup Reservoirs on the Upper Deschutes River. Since both of these reservoirs are in the currently unoccupied Upper Deschutes subunit, dam and reservoir modifications are not reasonably foreseeable. Projected FERC re- licensing costs are for bull trout studies and passage at the Pelton- Round Butte Project on the Deschutes River. Agricultural irrigation diversion project modification costs associated with potential reductions in irrigation water availability could range from zero to $ 43,000 annually. Other activities are individually estimated to account for less than $ 15,000 dollars per year in project modification costs. 38. Unit 7: Odell Lake - The Odell Lake Unit in central Oregon lies entirely within the Deschutes National Forest in Deschutes and Klamath counties. This unit is the smallest of the proposed units within the designation. Total proposed critical habitat includes approximately 2,675 ha ( 6,611 ac) of lake habitat and 18.1 km ( 11.3 mi) of streams. There is no unoccupied habitat within this unit. 39. Total annual costs associated with the bull trout within the unit are forecast to be between $ 51,000 and $ 56,000. Of this amount, almost all ( approximately $ 50,000 annually) will be associated with the administrative costs of the consultation process. It is estimated that project modification costs within the Odell Lake Unit will total less than $ 5,000 annually. These project modification costs are forecast to be largely associated with USFS activities. ES- 19 40. Unit 8: John Day River Basin - The John Day River Basin Unit in eastern Oregon includes the North Fork, the Middle Fork, and mainstem portions of the John Day River and their tributary streams in Wheeler, Grant, and Umatilla counties. A total of 1,080 km ( 671 mi) of stream habitat is proposed for designation as critical habitat. Overall, 19 percent of the proposed areas within the John Day River Unit are currently unoccupied by the species. Approximately 54 percent of the waters proposed for designation within the John Day Unit are located on Federal land. 41. The John Day River Unit is a relatively low cost unit, in terms of forecast costs per river mile of habitat proposed for designation. Total annual costs associated with the bull trout within this unit are forecast to be between $ 446,000 and $ 600,000. Of this amount, a large portion, approximately $ 278,000 annually, will be made up of administrative costs. The remainder of the forecast costs are associated with required project modifications. Specifically, project modifications associated with timber harvest on USFS lands ($ 57,000 to $ 143,000 per year from reductions in harvest, fisheries studies, road and culvert costs, and changes in yarding systems) and placer mining on USFS lands ( up to $ 88,000 per year associated with requirements for and limitations on allowed stream crossing activity) are expected to generate the greatest share of project modification costs in this unit. Costs associated with agricultural irrigation diversion reductions could range from zero to $ 58,000 annually. Other activities are individually estimated to each account for less than $ 10,000 dollars per year in project modification costs. The John Day River Basin is one of two units identified in this study as a setting where bull trout related project modifications could have a significant impact on a small placer mining business, the other is the Hells Canyon Complex ( Unit 12). 42. Unit 9: Umatilla- Walla Walla River Basins - The Umatilla and Walla Walla Rivers Unit is located in northeastern Oregon and southeastern Washington. The unit includes 636 km ( 395 mi) of streams extending across portions of Umatilla, Union, and Wallowa counties in Oregon, and Walla Walla and Columbia counties in Washington. Overall, 17 percent of the proposed critical habitat within this unit is currently unoccupied by the species. A relatively low portion ( 32 percent) of the waters proposed for designation within the Umatilla- Walla Walla Unit are located on Federal land. 43. The Umatilla- Walla Walla River Unit is among the lowest cost units, in terms of consultation- related cost per river mile of habitat proposed for designation. It is estimated that total annual costs associated with the bull trout within this unit will be between $ 98,000 and $ 211,000. Of this amount, approximately $ 59,000 annually will be associated with the administrative costs of the consultation process and the remainder with required project modifications. Specifically, fisheries studies associated with FCRPS consultations could cost up to $ 43,000 annually. Project modification associated with timber harvest on USFS lands is expected to be another significant category of future costs in this unit ($ 26,000 to $ 65,000 per year). Agricultural irrigation diversions could experience up to $ 26,000 in annual project modification costs within this unit. Other activities are individually estimated to each account for less than $ 10,000 dollars per year in project modification costs. In addition to the consultation and project modification costs, the Walla Walla Drainage is in ES- 20 the final stages of developing a basin- wide habitat conservation plan to protect bull trout, among other species. The plan has cost approximately $ 4 million to develop, and it is expected an additional $ 1 million will be spent to complete the plan during the next year or two. 44. Unit 10: Grande Ronde River Basin - The Grande Ronde Unit extends across Union, Wallowa, and Umatilla counties in northeastern Oregon, and Asotin, Columbia, and Garfield counties in southeastern Washington. This unit includes the Grande Ronde River from its headwaters to the confluence with the Snake River and a number of its tributaries, the largest being the Wallowa River. Approximately 1,030 km ( 640 mi) of stream habitat in the Grande Ronde River basin is proposed for critical habitat designation. Overall, seven percent of the proposed critical habitat within the Grand Ronde River Unit is currently unoccupied by the species. Approximately 52 percent of the waters proposed for designation within this unit are located on Federal land. 45. The Grand Ronde River Unit is a low- cost unit, in terms of forecast costs per river mile of habitat proposed for designation. Forecast total annual costs associated with the bull trout within this unit will be between $ 467,000 and $ 580,000. Of this amount, the vast majority, approximately $ 417,000 annually, are forecast to be administrative costs. The remainder of the forecast costs are associated with required project modifications. Specifically, fisheries studies within the unit associated with FCRPS consultations could cost up to $ 19,000 annually. Timber harvest on USFS lands is expected to be another significant source of future project modification costs in this unit ($ 34,000 to $ 87,000 per year resulting from reduced harvest, fisheries studies, and road and culvert costs, and changes in yarding systems). Agricultural irrigation diversion costs could be up to $ 35,000. Other activities are individually estimated to each account for less than $ 10,000 dollars per year in project modification costs. 46. Unit 11: Imnaha/ Snake River Basins - The Imnaha/ Snake Unit extends across Wallowa, Baker, and Union counties in northeastern Oregon and Adams and Idaho counties in western Idaho. The unit contains approximately 306 km ( 190 mi) of proposed critical habitat. All of the proposed habitat within the Imnaha- Snake River Unit is currently occupied by the species. Approximately 51 percent of the waters proposed for designation within this unit are located on Federal land. 47. The Imnaha/ Snake River Unit is a moderate- cost unit, in terms of forecast costs per river mile of habitat proposed for designation. Forecast total annual costs associated with the bull trout within this unit are between $ 559,000 and $ 605,000. Of this amount, the large majority are made up of administrative costs ( approximately $ 544,000, annually). The remainder of the forecast costs are associated with required project modifications. Specifically, fishery studies within the unit associated with FCRPS consultations could cost up to $ 18,000 annually. Timber harvest activities on USFS lands are expected to be another significant category of future project modification costs ($ 10,000 to $ 26,000 per year). Agricultural irrigation diversion related project modification costs could range from zero ES- 21 to $ 11,000. Other activities are individually estimated to each account for less than $ 5,000 dollars per year in project modification costs. 48. Unit 12: Hells Canyon Complex - The Hells Canyon Complex Unit encompasses basins in Idaho and Oregon draining into the Snake River and its associated reservoirs, from Hells Canyon Dam upstream to the confluence of the Weiser River. The Hells Canyon Complex unit includes a total of approximately 1,000 km ( 621 mi) of streams proposed as critical habitat. A relatively high portion ( about 48 percent) of the proposed critical habitat within the Hells Canyon Complex Unit is currently unoccupied by the species. Approximately 47 percent of the waters proposed for designation within this unit are located on Federal land. 49. The Hells Canyon Complex Unit is a relatively moderate- cost unit, in terms of forecast costs per river mile of habitat proposed for designation. It is forecast that total annual costs associated with the bull trout within this unit will be between $ 1.9 million and $ 2.3 million. Of this amount, a majority are expected to be made up of administrative costs ( approximately $ 1.4 million, annually). In addition, significant categories of forecast project modification costs within this unit are associated with timber harvest on USFS lands ($ 92,000 to $ 233,000 per year resulting from reduced harvest, fishery studies, road and culvert costs, and changes in yarding systems), placer mining on USFS land ($ 69,000 associated with requirements for and limitations on allowed stream crossing activity), FERC hydroelectric re- licensing ($ 111,000 to $ 259,000), and BOR reservoir activities ($ 192,000 annually, primarily for study related costs). The BOR reservoirs in the unit include Phillips Reservoir and Thief Valley Reservoir; projected costs are for bull trout related studies. Major FERC- licensed hydroelectric facilities in the unit include Hells Canyon, Brownlee and Oxbow. Agricultural irrigation diversions could experience up to $ 95,000 in annual project modification costs within this unit. Other activities are individually estimated to each account for less than 20,000 dollars per year in project modification costs. The Hells Canyon complex is one of two units identified in this study as a setting where bull trout related project modifications could have a significant impact on a small placer mining business, the other is the John Day River Basin ( Unit 8). 50. Unit 13: Malheur River Basin - The Malheur Unit is in the Malheur River Basin in eastern Oregon, in Grant, Baker, Harney, and Malheur counties. A total of 389 km ( 241 mi) of streams and two reservoirs are proposed for critical habitat. About 25 percent of the proposed critical habitat within the Malheur River Unit is currently unoccupied by the species. Approximately 63 percent of the waters proposed for designation within the Malheur River Unit are located on Federal land. 51. The Malheur River Unit is the second highest cost unit, in terms of forecast costs per river mile of habitat proposed for designation. Forecast total annual costs associated with the bull trout within this unit are between $ 2.0 million and $ 2.1 million. Project modification costs make up a small portion of these costs, between $ 179,000 and $ 268,000 annually. The rest of the forecast costs are associated with administrative requirements. Major categories of forecast project modification costs within this unit are associated with ES- 22 timber harvest on USFS lands ($ 33,000 to $ 83,000 per year) and BOR reservoir activities ($ 133,000 annually). The BOR costs are for research as well as trap and haul fish passage that is ongoing at Beulah Reservoir on the Malheur River, and estimated research costs at Warm Springs Reservoir, which is currently unoccupied by bull trout. Possible reductions in agricultural irrigation diversions could cost from zero to $ 34,000 annually . Other activities are individually estimated to each account for less than $ 5,000 per year in project modification costs. 52. Unit 14: Coeur d'Alene Lake Basin - The Coeur d'Alene Lake Basin Unit in Idaho is broken into two subunits. The Coeur d'Alene Lake subunit lies within Kootenai, Shoshone, Benewah and Bonner counties. The St. Joe River subunit includes streams in Shoshone, Benewah, and Latah counties, Idaho. Thirty stream reaches or tributaries ( 677 km ( 421 mi)) and lakes comprising 12,727 ha ( 31,450 ac) of surface area are proposed as critical habitat within this unit. Of this, a relatively high portion ( 46 percent) is currently unoccupied by the species. Approximately 58 percent of the waters proposed for designation within this Unit are located on Federal land. 53. The Coeur d'Alene Lake Unit is relatively low cost unit, in terms of forecast costs per river mile of habitat proposed for designation. Forecast total annual costs associated with the bull trout within this unit are between $ 429,000 and $ 693,000. A large share of this amount, approximately $ 287,000 annually, is forecast to be made up of administrative costs. In addition, major categories of forecast project modification costs within the unit are associated with timber harvest on USFS lands ($ 97,000 to $ 245,000 per year resulting from reduced harvest, fishery studies, road and culvert costs, and changes in yarding systems), and FHWA bridge and road work ($ 23,000 associated with limitations on in- stream work periods). Modifications to agricultural irrigation diversions could result in costs from zero to $ 100,000. Other activities are individually estimated to each account for less than $ 10,000 dollars per year in project modification costs. 54. Unit 15: Clearwater River Basin - The Clearwater River Unit includes 3,063 km ( 1,904 mi) of streams and 6,722 ha ( 16,611 ac) of lakes proposed as critical habitat for bull trout in north- central Idaho. This large unit extends from the Snake River confluence at Lewiston on the west to headwaters in the Bitterroot Mountains along the Idaho/ Montana border on the east. About 13 percent of the proposed critical habitat within the Clearwater River Unit is currently unoccupied by the species. Approximately 78 percent of the waters proposed for designation within the Unit are located on Federal land. 55. Total forecast costs associated with consultation on bull trout within this unit are between $ 1.0 million and $ 1.7 million annually. Of this amount, approximately $ 572,000 is associated with administrative costs. In addition, major categories of forecast project modification costs within this unit are associated with timber harvest on USFS lands ($ 252,000 to $ 635,000 per year resulting from reduced harvest, fishery studies, road and culvert costs and changes in yarding systems), recreational suction mining on USFS land ($ 115,000 associated with reduced availability of stream access due to seasonal closures), highway bridge and road work ($ 25,000), and USFS management activities ($ 35,000 ES- 23 annually). Agricultural irrigation diversion project modification costs could range from zero up to $ 259,000 annually. These costs may result from reductions in irrigation deliveries. Other activities are individually estimated to each account for less than $ 15,000 dollars per year in project modification costs. 56. Although the proposed Clearwater River Basin Critical Habitat Unit is forecast to experience significant costs associated with the bull trout, these costs should be viewed in light of the large size of the proposed unit. In fact, the Clearwater Unit is one of the lowest cost of the proposed units, in terms of forecast costs per river mile of habitat proposed for designation. 57. Unit 16: Salmon River Basin - The Salmon River basin is a geographically large unit that extends across central Idaho from the Snake River to the Montana border. The critical habitat unit includes 7,688 km ( 4,777 mi) of streams extending across portions of Adams, Blaine, Custer, Idaho, Lemhi, Nez Perce, and Valley counties in Idaho. About six percent of the proposed critical habitat within the Salmon River Unit is currently unoccupied by the species. Approximately 86 percent of the waters proposed for designation within the Unit are located on Federal land. 58. Forecast total annual costs associated with the bull trout within this unit are between $ 2.1 million and $ 3.3 million. Of this amount, approximately $ 1.3 million is associated with administrative costs, with the rest made up of project modification costs. Major categories of forecast project modification costs are associated with timber harvest on USFS lands ($ 465,000 to $ 1.2 million per year resulting from reduced harvest, fishery studies, road and culvert costs and changes in yarding systems), highway bridge and road work ($ 57,000), and USFS general forest management activities ($ 65,000 annually). The cost of modifications to agricultural irrigation water deliveries could range from zero up to $ 479,000 annually. Costs associated with mining activities at Hecla Mining Company's Grouse Creek and Thompson Creek mines are estimated at $ 132,000 annually. Other activities are individually estimated to each account for less than $ 25,000 dollars per year in project modification costs. 59. Although the proposed Salmon River Basin Critical Habitat Unit has significant forecast costs associated with the bull trout, these costs should be viewed in light of the large size of the proposed unit. In fact, the Salmon River Unit is also one of the lowest cost of the proposed units, in terms of forecast costs per river mile of habitat proposed for designation. 60. Unit 17: Southwest Idaho River Basins - The Southwest Idaho Unit includes a total of approximately 2,792 km ( 1,735 mi) of streams in the Boise, Payette, and Weiser River basins. A number of southern Idaho counties are wholly or partially within this unit, including Ada, Adams, Boise, Camas, Canyon, Elmore, Gem, Payette, Valley, and Washington counties. The counties within the southern Idaho unit include both a significant portion of productive agricultural land as well as the largest population center in the state ( the Boise Valley). About 24 percent of the proposed critical habitat within the Southwest ES- 24 Idaho Unit is currently unoccupied by the species. Approximately 78 percent of the proposed streams and 66 percent of proposed lakes and reservoirs within the Southwest Idaho River Basins Unit are located on Federal land. 61. The Southwest Idaho River Basins Unit is a relatively low- cost unit, in terms of forecast costs per river mile of habitat proposed for designation. Forecast total annual costs associated with the bull trout within this unit are between $ 1.0 million and $ 1.9 million. Total administrative costs are forecast to be a relatively small portion of this total ($ 328,000 annually). The remainder of the forecast costs are expected to result from forecast project modifications. Specifically, project modification costs within this unit are forecast to be associated with timber harvest on USFS lands ($ 309,000 to $ 781,000 per year resulting from reduced harvest, fishery studies, road and culvert costs and changes in yarding systems) and BOR reservoir activities ($ 263,000 annually). Major BOR reservoirs in this unit include Anderson Ranch and Arrowrock Reservoirs on the Boise River, Cascade Reservoir on the North Fork Payette, and Deadwood Reservoir on the Payette River. Forecast project modification costs include bull trout life- cycle studies and monitoring at all the reservoirs, and trap and haul passage around the Boise River reservoirs. Costs associated with FERC relicensing at the Lucky Peak facility on the Boise River, and power facilities at the Cascade impoundment, are expected to cost between $ 31,000 and $ 58,000 annually. Modifications to agricultural irrigation diversions could range from zero to $ 318,000 annually. These costs could potentially be associated with reductions in irrigation water withdrawals. Other activities are individually estimated to each account for less than $ 30,000 dollars per year in project modification costs. 62. Unit 18: Little Lost River Basin - The Little Lost River Unit is within Butte, Custer, and Lemhi counties in east- central Idaho. Approximately 184.6 km ( 115.4 mi) of stream habitat in the Little Lost River Basin is proposed for critical habitat designation. About eight percent of the proposed critical habitat within the Little Lost River Unit is currently unoccupied by the species. Approximately 76 percent of the proposed streams within the Little Lost River Basin Unit are located on Federal land. 63. The Little Lost River Unit is forecast to be a relatively inexpensive unit compared to others in the designation, and is a moderate- cost unit in terms of forecast costs per river mile of habitat proposed for designation. It is estimated that total annual costs associated with the bull trout within this unit will be between $ 150,000 and $ 176,000. Of this amount, a large share, approximately $ 136,000 annually, is forecast to be comprised of administrative costs, with the remainder made up of project modification costs. The largest category of project modification costs within this unit is forecast to be associated with timber harvest on USFS lands ($ 10,000 to $ 24,000 per year). Project modifications to agricultural irrigation diversions could result in costs from zero to $ 10,000 annually. Other activities are individually estimated to each account for less than $ 5,000 dollars per year in project modification costs. 64. Unit 19: Lower Columbia River Basin - The Lower Columbia Unit consists of portions of the Lewis, White Salmon, and Klickitat Rivers, and associated tributaries in ES- 25 southwestern and south- central Washington. The unit extends across Clark, Cowlitz, Klickitat, Skamania, and Yakima counties. Approximately 340 km ( 210 mi) of streams and three reservoirs covering 5,054 ha ( 12,488 ac) are proposed for critical habitat designation. About 20 percent of the proposed critical habitat within the Lower Columbia River Unit is currently unoccupied by the species. A low portion ( 18 percent) of the proposed streams and 29 percent of the proposed lakes and reservoirs within the Lower Columbia River Basin Unit are located on Federal land. 65. When forecast total costs for this unit are viewed in light of its size, the Lower Columbia River Basins Unit is a moderate- cost unit, in terms of forecast cost per river mile of habitat proposed for designation. It is estimated that total annual costs associated with the bull trout within the unit will be between $ 385,000 to $ 494,000. Total administrative costs associated with the consultation process are estimated to be a relatively large fraction of these costs ($ 304,000 annually). In addition, project modification costs are forecast to be associated with FERC hydroelectric facility re- licensing activities ($ 67,000 to $ 153,000 annually). These FERC re- licensing costs are for the significant hydroelectric developments on the Lewis River, including Yale, Merwin, Swift No. 1, and Swift No. 2. These costs are projected to include study costs, trap and haul passage, and habitat acquisition. Swift No, 2 is one of two hydroelectric projects identified in this study where bull trout- related project modifications could have a significant impact on a small business; the other is Box Canyon in the Northeast Washington River Basin ( Unit 22). Other activities are individually estimated to each account for less than $ 10,000 dollars per year in project modification costs. 66. Unit 20: Middle Columbia River Basin - The Middle Columbia River unit encompasses the entire Yakima River basin located in south central Washington, draining approximately 15,900 square km ( 6,155 square mi). The basin occupies most of Yakima and Kittitas counties, about half of Benton County, and a small portion of Klickitat County. Approximately 846 km ( 529 mi) of stream habitat and 6,066 ha ( 14,986 ac) of lake and reservoir surface area are proposed as critical habitat within this unit. About 13 percent of the proposed critical habitat within the Middle Columbia River Unit is currently unoccupied by the species. Approximately 44 percent of the waters proposed for designation within the Middle Columbia River Basin Unit are located on Federal land. 67. The Middle Columbia River Unit is a relatively low- cost unit in terms of cost per stream mile. Forecast costs associated with the bull trout within this unit are between $ 391,000 and $ 494,000 annually. Of this amount, a very small portion, approximately $ 50,000 annually, will be associated with the administrative costs of the consultation process, while the remainder will be associated with project modifications. While there are projected to be project modification costs associated with timber harvest activities ( through consultation with the USFS; estimated to be between $ 36,000 and $ 91,000 annually), the majority of forecast costs for this unit are associated with dam and reservoir operations. The BOR operates a system of five dams in this basin ( Cle Elum Lake, Kachess Lake, Keechelus Lake, Tieton Dam, and Bumping Lake) which provide power and irrigation for this agriculturally important region. It is estimated that project modification costs ( periodic trap- ES- 26 and- haul passage to allow genetic interchange between isolated bull trout populations) at the BOR operated impoundments in the unit will cost approximately $ 290,000 per year. Other activities are individually estimated to account for a small portion of forecast annual project modification costs. 68. TheMiddle Columbia River Unit is a relatively low- cost unit in terms of cost per stream mile. 69. Unit 21: Upper Columbia River Basin - The Upper Columbia River Basin includes three subunits in central and northern Washington: the Wenatchee River subunit in Chelan County; the Entiat River subunit in Chelan County; and the Methow River subunit in Okanogan County. A total of 909.7 km ( 565.4 mi) of streams and 1,010 ha ( 2,497 ac) of lake surface area are proposed for critical habitat. About nine percent of the proposed critical habitat within the Upper Columbia River Unit is currently unoccupied by the species. Approximately 58 percent of the proposed streams and 41 percent of the proposed lakes and reservoirs within the Upper Columbia River Basin Unit are located on Federal land. 70. The Upper Columbia River Basins Unit is a low- cost unit, in terms of forecast cost per river mile of habitat proposed for designation. Forecast costs associated with the bull trout within this unit are between $ 196,000 to $ 505,000 annually. Total administrative costs associated with the consultation process are estimated to be $ 122,000, with the remainder of the forecast costs made up of project modification requirements. Major categories of forecast project modification costs within this unit are associated with FCRPS fisheries studies ( zero to $ 155,000 per year), and USFS timber harvest activities ($ 57,000 to $ 144,000 annually resulting from reduced harvest, fishery studies, road and culvert costs and changes in yarding systems). The FCRPS fisheries studies are for bull trout radio telemetry, snorkel and general monitoring study costs in the Entiat, Methow, and Wenatchee Rivers. In addition, modifications to agricultural irrigation diversions could result in costs from zero to $ 59,000 annually. Other activities are individually estimated to each account for less than $ 10,000 dollars per year in project modification costs. 71. Unit 22: Northeast Washington River Basins - The Northeast Washington unit includes bull trout above Chief Joseph Dam on the Columbia River. A total of 373.1 km ( 231.9 mi) of streams and 1,166 ha ( 2,880 ac) of lake surface area are proposed as critical habitat within this unit. A high proportion ( 54 percent) of the proposed critical habitat within the Northeast Washington River Basins Unit is currently unoccupied by the species, and approximately 58 percent of the proposed streams and reservoirs within this unit are located on Federal land. 72. The Northeast Washington River Basins Unit is forecast to be a relatively high- cost unit, in terms of forecast cost per river mile of habitat proposed for designation. Forecast costs associated with the bull trout within this unit are between $ 965,000 to $ 1.4 million annually. Total annual administrative costs are estimated to be a large share of these costs ($ 676,000), with the remainder associated with project modifications. A major category of ES- 27 annual project modification costs within this unit involves FERC hydroelectric facility re-licensing activities ( up to $ 540,000 annually). The estimated FERC re- licensing costs are related to two major hydroelectric facilities on the Pend Orielle River: Box Canyon and Boundary. The Box Canyon re- licensing terms are currently in continuing settlement negotiations, and likely costs specific to this facility are not currently available. However, a recent FERC environmental impact statement ( EIS) estimates that the present value of bull trout related project modifications ( including habitat acquisition) could total upwards of $ 60 million for this relatively small ( 60 MW) facility. Box Canyon is one of two hydroelectric projects identified in this study where bull trout- related project modifications could have a significant impact on a small business; the other is Swift No. 2 in the Lower Columbia River Basin ( Unit 19). Modifications to agricultural irrigation diversions could impose costs from zero to $ 46,000 annually. Other activities are individually estimated to each account for less than $ 10,000 dollars per year in project modification costs. 73. Unit 23: Snake River Basin in Washington - The Snake River Washington Unit includes two critical habitat subunits located in southeast Washington: the Tucannon River subunit located in Columbia and Garfield counties, and the Asotin Creek subunit within Garfield and Asotin counties. A total of 326 km ( 203 mi) of stream reaches are proposed as critical habitat within this unit. About 23 percent of the proposed critical habitat within the Snake River Basin in Washington Unit is currently unoccupied by the species. Approximately 52 percent of the proposed streams within the Snake River Basin Unit are located on Federal land. 74. The Snake River Basin Unit is a relatively low- cost unit, in terms of forecast cost per river mile of habitat proposed for designation. Forecast costs associated with the bull trout within the unit will be between $ 230,000 to $ 287,000. Total annual administrative costs associated with the bull trout are estimated to be a large portion of this total ($ 201,000). The major category of project modification costs within this unit is forecast to be associated with USFS timber harvest activities ($ 21,000 to $ 53,000 annually). Agricultural irrigation diversions could see up to $ 22,000 in annual project modification costs within this unit. Other activities are estimated to each account for less than $ 5,000 dollars per year in project modification costs. 75. Unit 24: Columbia River - This unit is located in the states of Oregon and Washington and includes Clatsop, Columbia, Multnomah, Hood River, Wasco, Sherman, Gilliam, Morrow, and Umatilla counties in Oregon and Pacific, Wahkiakum, Cowlitz, Clark, Skamania, Klickitat, Benton, Walla Walla, Franklin, Yakima, Grant, Kittitas, Chelan, Douglas, and Okanogan counties in Washington. All of this stretch of the Columbia River is currently considered occupied by the bull trout. A relatively low share of the land adjacent to the river in this unit is made up of Federally managed lands ( approximately 39 percent). 76. The Columbia River Unit is a relatively low- cost unit, in terms of forecast cost per river mile of habitat proposed for designation. Forecast total costs associated with the bull trout within this unit will be between $ 243,000 to $ 504,000 annually. Total annual ES- 28 administrative costs associated with this unit are relatively low ($ 50,000). The major category of annual project modification costs within the unit are forecast to be associated FERC hydroelectric facility re- licensing activities ( up to $ 362,000 annually). Major FERC-licensed hydroelectric projects on the mainstem Columbia River include Priest Rapids, Rocky Reach, and Wells. These very large facilities are operated by PUD's. Other activities are individually forecast to account for less than $ 15,000 dollars per year in project modification costs. 77. Unit 25: Snake River - The lower Snake River is located in Washington ( Franklin, Walla Walla, Columbia, Whitman, and Asotin counties) from its mouth to the confluence with the Clearwater River at the cities of Clarkston, Washington and Lewiston, Idaho. The Snake River forms the border between Washington and Idaho from Clarkston/ Lewiston upstream to the Oregon border. The Snake River forms the boundary between Idaho and Oregon from that point upstream to the limit of this critical habitat unit. This portion of the Snake River is within Nez Perce, Idaho, Adams, and Washington counties in Idaho, and Wallowa, Baker, and Malheur counties in Oregon. About 20 percent of the proposed critical habitat within the Snake River Unit is currently unoccupied by the species. Approximately 50 percent of the habitat proposed for designation within the Snake River Unit is located on Federal land. 78. The Snake River Unit is a relatively low- cost unit, in terms of forecast cost per river mile of habitat proposed for designation. Forecast costs associated with the bull trout within this unit are approximately $ 135,000. Administrative costs associated with the consultation process are estimated to be nearly all of that amount, or $ 125,000 annually. Small Business Effects 79. Under the Regulatory Flexibility Act ( RFA) ( as amended by the Small Business Regulatory Enforcement Fairness Act ( SBREFA) of 1996), whenever a Federal agency is required to publish a notice of rulemaking for any proposed or final rule, it must prepare and make available for public comment a regulatory flexibility analysis that describes the effect of the rule on small entities ( i. e., small businesses, small organizations, and small government jurisdictions). The following summarizes the potential effects of critical habitat designation on small entities: Reductions in contractual USFS water deliveries could significantly impact five ranching/ farming operations annually. However, the location of the reduction in water deliveries within the critical habitat designation is uncertain. Small hydroelectric producers in Washington, Oregon, Idaho and Montana could be affected by project modification costs at the time of facility re- licensing. Specifically, the resulting project modifications could have a significant economic impact on the financial operations of Cowlitz County public utility district ( PUD) ( Unit 19 - Lower Columbia River) and Pend Orielle County PUD ( Unit 22 - Northeast Washington River). ES- 29 • Section 7- related costs associated with instream work is expected to affect approximately 15 placer mines annually in the John Day River Basin ( Unit 8) and Hells Canyon Complex ( Unit 12). While the financial characteristics of these mining operations are unknown, this analysis assumes the economic effect will be significant for those operations that are impacted. Energy Industry Impacts 80. Pursuant to Executive Order No. 13211, Federal agencies are required to submit a summary of the potential effects of regulatory actions on the supply, distribution and use of energy. Two criteria are relevant to this analysis: 1) reductions in electricity production in excess of 1 billion kilowatt- hours per year or in excess of 500 megawatts ( MWs) of installed capacity and 2) increases in the cost of energy production in excess of one percent. The constraints placed on energy production within the region from compliance with bull trout section 7 consultations will not result in significant decreases in production or increases in energy costs within the region. Changes From Draft Economic Analysis 81. Information supplied though public comments to the Draft Economic Analysis along with additional information from Action agency and Service personnel on issues raised through public comment led to several changes to the analysis. This Final Economic Analysis contains the following significant changes from the draft report. 1) Additional information on Habitat Conservation Plans ( HCPs) currently under development within the proposed designation has been incorporated. Additional costs on the order of one million dollars annually have been added to the estimated costs reported. 2) The BOR supplied extensive comments on current and potential costs associated with consultation on its impoundments. Costs associated with potential project modifications to Yakima Drainage dams ( as well as for other BOR impoundments within the proposed designation) have been reduced in response to the new BOR information. 3) Information from Hecla Mining Company identified additional consultation- related costs for the Hecla Grouse Creek and Thompson Creek mines. These costs have been included in the section 4 discussion of USFS mining activity. 4) Information from USFS personnel from the Wallowa/ Whitman National Forest identified impacts associated with limitations on in- stream work windows for placer mining operations as baseline State of Oregon regulations that are independent of bull trout section 7 consultation. Estimated impacts to Oregon placer mining have been adjusted accordingly. ES- 30 5) Additionally, corrections to minor errors within the report, not impacting final cost estimates, have been made in response to public comments. Caveats to Economic Analysis 82. Exhibit ES. 10 presents the key assumptions of this economic analysis, as well as the potential direction and relative scale of bias introduced by the assumptions. 83. These caveats below describe factors that introduce uncertainty into the results of this analysis. ES. 10 CAVEATS TO THE ECONOMIC ANALYSIS Key Assumption Projected USFS timber harvest activity is based on recent regional history and ignores the declining long- term trend of the industry. USFS water diversion reductions occur annually and representative water costs reflect the high- end of water lease rates in Washington. Cost of USFS water diversion reductions and timber harvest project modifications are distributed across the units in proportion to USFS non- wilderness acreage. While this may have no effect on the total cost estimate, it may have an effect on the unit cost estimate. Total costs of providing technical assistance is expected to be small relative to other economic impacts; therefore, this analysis does not quantify the instances and costs of technical assistance efforts. Project modifications incorporating measures suggested by the Service and voluntarily agreed to by the applicant during the informal consultation process in order to minimize impact to the bull trout and/ or its habitat are not quantified in this analysis. Amortization of fishery- related capital investments are based on the life of the project rather than a shorter revenue recovery period. Changes in hydroelectric power revenues attributable to reductions in operational flexibility at Libby and Hungry Horse dams is not quantified Most of the project modification costs will either be borne directly by or passed onto the Federal government. The FPA, the Pacific Northwest Electric Power Planning and Conservation Act, and fisheries management directives ( Northwest Forest Plan, INFISH and PACFISH) provide baseline protection. Project modification costs allocated between bull trout and other listed species. Limited consultation with the NRCS is anticipated and based on a the record of past formal and informal consultation activity on the bull trout Effect on Cost Estimate + + +/- - - - - +/- +/- +/- - -: This assumption may result in an underestimate of real costs. + : This assumption may result in an overestimate of real costs. +/-: This assumption has an unknown effect on estimates. ES- 31 Estimated Cost of the Final Designation 84. The analysis contained in this report is consistent with the designation as described in the proposed rule; 5 however, the Service is expected to exclude some proposed areas of habitat to arrive at a final designation. The purpose of this section is to detail the expected changes to the proposed designation and show the implication of these changes on estimated consultation and project modification costs. 85. Exhibit ES. ll compares the spatial extent of the proposed and expected final designations for bull trout critical habitat for both river and stream miles and lake and reservoir acres. Overall, 1,925 miles of rivers and streams and approximately 55,000 acres of lakes and reservoirs are expected to be excluded from critical habitat in the final designation. The greatest reductions in critical habitat stream miles are expected to occur in the Deschutes River Unit ( 60.5 percent reduction), Hood River Unit ( 33.2 percent), Southwest Idaho River Basins Unit ( 32.8 percent), and the Hells Canyon Complex Unit ( 21.3 percent). Most of the reductions in lake and reservoir critical habitat acres are expected to occur in the Deschutes River, Southwest Idaho River Basins and Malheur River Units, all with more than a 70 percent reduction in designated lake and reservoir critical habitat compared to the original proposed designation. ExhibitES. il SUMMARY OF CHANGES IN BULL TROUT CRITICAL HABITAT FROM PROPOSED TO FINAL DESIGNATION Unit Unit 1 - Klamath River Basin Unit 2 - Clark Fork River Basin Unit 3 - Kootenai River Basin Unit 4 - Willamette River Basin Unit 5 - Hood River Basin Unit 6 - Deschutes River Basin Unit 7 - Odell Lake Unit 8 - John Day River Basin Unit 9 - Umatilla- Walla Walla River Basins Unit 10 - Grande Ronde River Basin Unit 11 - Imaha/ Snake River Basins Unit 12 - Hells Canyon Complex Unit 13 - Malheur River Basin Unit 14 - Coeur d'Alene Lake Basin Proposed Designation Stream Miles 296 3,372 368 200 103 439 15 639 396 644 191 599 233 403 Lake and Reservoir Acres 33,939 304,226 30,094 8,899 91 23,314 6,439 0 0 0 0 0 5,926 27,296 Final Designation Stream Miles 280 3,368 368 200 69 173 13 563 348 625 191 471 214 403 Lake and Reservoir Acres 33,939 304,225 30,094 8,899 91 3,407 6,439 0 0 0 0 0 1,769 27,296 5 U. S. Fish and Wildlife Service, Proposed Designation of Critical Habitat for the Klamath River and Columbia River Distinct Population Segments of Bull Trout, November 29, 2002 ( 67 FR 71235- 71284). ES- 32 Exhibit ES. ll SUMMARY OF CHANGES IN BULL TROUT CRITICAL HABITAT FROM PROPOSED TO FINAL DESIGNATION Unit Unit 15 - Clearwater River Basin Unit 16 - Salmon River Basin Unit 17 - Southwest Idaho River Basins Unit 18 - Little Lost River Basin Unit 19 - Lower Columbia River Basin Unit 20 - Middle Columbia River Basin Unit 21 - Upper Columbia River Basin Unit 22 - Northwest Washington River Basins Unit 23 - Snake River Basin in Washington Unit 24 - Columbia River Basin Unit 25 - Snake River Basin Total Proposed Designation Stream Miles 1,904 4,296 1,657 113 171 523 591 232 204 537 343 18,468 Lake and Reservoir Acres 16,610 3,683 41,307 0 12,078 14,987 2,553 1,279 0 0 0 532.724 Final Designation Stream Miles 1,655 3,835 1,114 110 145 519 578 232 189 537 343 16,543 Lake and Reservoir Acres 16,610 3,487 10,651 0 12,000 15,548 2,553 1,279 0 0 0 478,188 86. As noted, the costs reported in the body of this report are consistent with the proposed designation. Expected changes to the proposed designation and the impact of these exclusions on costs are summarized in Exhibit ES. 12, where estimates of annual section 7- related consultation costs for both the proposed and expected final bull trout critical habitat designations are shown. The expected changes to the final designation impacts estimated costs in two ways. 87. First, where future consultation and project modification costs were estimated for dams and reservoirs located within stream reaches that are expected to be excluded from the final critical habitat designation, the costs associated with these anticipated consultations are removed. Three critical habitat units have dams and reservoirs located on waters expected to be excluded in the final designation. The previously quantified costs associated with consultations on Lucky Peak and Cascade Dams and Reservoirs, and Warm Springs, Crane Prairie, and Wickiup Reservoirs have therefore been removed from the forecast total costs associated with the final critical habitat designation. Costs associated with consultations on Lucky Peak and Cascade Dams and Reservoirs have been removed from estimates for the Southwest Idaho River Basins Units, costs associated with consultation on Warm Springs Reservoir have been removed from estimates for the Malheur River Unit, and costs associated with consultations on Crane Prairie and Wickiup Reservoirs have been removed from estimates for the Deschutes River Unit. 88. Second, because the Service is expected to exclude areas of unknown occupancy from the final designation, the spatial extent of unoccupied habitat in each critical habitat ES- 33 unit is adjusted to reflect the expected final designation ( see Appendix F, Exhibit F. 11), and the forecast costs of the expected final designation reflect these changes. 89. Exhibit ES. 12 presents a summary of the annualized forecast total costs, by unit, likely to be associated with the final critical habitat designation over the next ten years. Overall, the removal of waters from the proposed to the expected final bull trout designation is expected to lower forecast section 7- related consultation and project modification costs by approximately $ 18 to $ 24 million over the next ten years ( nine percent). In six units where no changes in the proposed designation were made, there is no change in forecast costs. As a percentage of unit costs, the greatest reduction in forecast costs resulting from the exclusions is expected to occur in the Deschutes River Basin Unit, where forecast costs of the expected final designation are 43 to 55 percent of the costs originally forecast for the proposed designation. 90. The economic impacts associated with the final designation, discounted to present value using a rate of seven percent, are forecast to range from approximately $ 180 to $ 245 million over the next ten years, or $ 18.0 to $ 24.5 million annually. Total costs associated with the final designation for the Klamath Distinct Population Segment of bull trout are forecast to range from approximately $ 5 million to $ 7 million over the next ten years ($ 0.5 to 0.7 million annually), while costs associated with the final designation for the Columbia Distinct Population Segment of bull trout are forecast to range from approximately $ 175 million $ 235 million ($ 17.5 to $ 23.5 million annually). 91. These costs will be incurred primarily by Federal agencies responsible for section 7 consultations ( approximately 65 percent of forecast costs) and the Service ( approximately five to ten percent of forecast costs); private entities will incur the remaining 25 to 30 percent. Project modification costs account for as much as 50 to 60 percent of forecast costs, and administrative costs the remaining 40 to 50 percent. Dam and reservoir- related consultations, including power facility re- licensing, account for approximately 42 percent of forecast project modification costs ( excluding the cost associated with reduced irrigation diversions). Timber harvest, irrigation diversions, habitat conservation plans, and mining account for 20 percent, 12 percent, nine percent, and three percent of forecast project modification costs, respectively. 92. The main text of the report discusses impacts to small businesses expected under the rulemaking as proposed. Impacts to small businesses are primarily related to potential reductions in USFS water deliveries to farmers/ ranchers, project modifications triggered during hydroelectric facility re- licensing, and costs associated with activity restrictions for placer mining. Under the final designation, the reduction in small business impacts would parallel the extent to which these activities occur in habitat removed from the final designation and losses related to these activities reduced. ES- 34 Exhibit ES. 12 SUMMARY COMPARISON OF PROPOSED AND FINAL CRITICAL HABITAT DESIGNATION SECTION 7 COSTS FOR THE BULL TROUT ( Annualized $ l, 000fs) Unit Unit 1 - Klamath River Basin Unit 2 - Clark Fork River Basin Unit 3 - Kootenai River Basin Unit 4 - Willamette River Basin Unit 5 - Hood River Basin Unit 6 - Deschutes River Basin Unit 7 - Odell Lake Unit 8 - John Day River Basin Unit 9 - Umatilla- Walla Walla River Basins Unit 10 - Grande Ronde River Basin Unit 11 - Imaha/ Snake River Basins Unit 12 - Hells Canyon Complex Unit 13 - Malheur River Basin Unit 14 - Coeur d'Alene Lake Basin Unit 15 - Clearwater River Basin Unit 16 - Salmon River Basin Unit 17 - Southwest Idaho River Basins Unit 18 - Little Lost River Basin Unit 19 - Lower Columbia River Basin Unit 20 - Middle Columbia River Basin Unit 21 - Upper Columbia River Basin Unit 22 - Northwest Washington River Basins Unit 23 - Snake River Basin in Washington Unit 24 - Columbia River Basin Estimated Range of Cost Proposed Critical Habitat Designation Low Estimate $ 529 1,321 328 4,497 328 430 51 446 98 467 559 1,939 2,006 429 995 2,059 1,004 150 385 391 196 965 230 243 High Estimate $ 733 2,192 402 4,891 413 719 56 600 211 580 605 2,338 2,095 693 1,676 3,319 1,867 176 494 494 505 1,397 287 504 Estimated Range of Cost Final Critical Habitat Designation Low Estimate $ 507 1,321 328 3,463 248 195 51 411 81 444 559 1,443 1,792 279 881 1,942 698 144 308 376 178 663 177 243 High Estimate $ 703 2,192 402 3,766 312 401 56 553 175 551 605 1,740 1,874 450 1,483 3,130 1,348 169 396 475 460 959 221 504 ES- 35 Exhibit ES. 12 SUMMARY COMPARISON OF PROPOSED AND FINAL CRITICAL HABITAT DESIGNATION SECTION 7 COSTS FOR THE BULL TROUT ( Annualized $ l, 000fs) Unit Unit 25 - Snake River Basin Multiple unit or unknown a Estimated Range of Cost Proposed Critical Habitat Designation Low Estimate 135 1,303 High Estimate 135 1,303 Estimated Range of Cost Final Critical Habitat Designation Low Estimate 135 1,303 High Estimate 135 1,303 Notes: These estimates include all section 7 costs, including those co- extensive with the listing and designation of critical habitat for the bull trout. Costs are reported in 2003 dollars. a Miscellaneous costs ($ 213,000 annually) and the costs associated with development of HCP's ($ 1,090,000 annually) have not been allocated to the unit level due to uncertainty as to their location. ES- 36 INTRODUCTION AND BACKGROUND SECTION 1 93. In November 2002, the Service proposed to designate critical habitat for the Columbia River and Klamath River DPSs of bull trout ( Salvelinus confluentus), hereafter " bull trout." 6 The purpose of this report is to identify and analyze potential economic impacts associated with the proposed critical habitat designation. This report was prepared by Bioeconomics, Inc. of Missoula, Montana. 94. Section 4( b)( 2) of the Act requires the Service to designate critical habitat on the basis of the best scientific data available, after taking into consideration the economic impact, and any other relevant impact, of specifying any particular area as critical habitat. The Service may exclude areas from critical habitat designation when the benefits of exclusion outweigh the benefits of including the areas within critical habitat, provided the exclusion will not result in extinction of the species. 95. Under the listing of a species, section 7( a)( 2) of the Act requires Federal agencies to consult with the Service in order to ensure that activities they fund, authorize, permit, or carry out are not likely to jeopardize the continued existence of the species. The Service defines jeopardy as any action that would appreciably reduce the likelihood of both the survival and recovery of the species. For designated critical habitat, section 7( a)( 2) also requires Federal agencies to consult with the Service to ensure that activities they fund, authorize, permit, or carry out do not result in destruction or adverse modification of critical habitat. Adverse modification of critical habitat is currently construed as any direct or indirect alteration that appreciably diminishes the value of critical habitat for conservation of a listed species. 6 On January 26,2001, the Alliance for the Wild Rockies, Inc. and Friends of the Wild Swan, Inc. filed a lawsuit in the U. S. District Court of Oregon challenging the Service's failure to designate critical habitat for bull trout. The Service entered into a settlement agreement on January 14, 2002, which stipulated that the Service would make critical habitat determinations for five populations of bull trout ( Civil Case No: CV 01- 127- JO). The Service has proposed critical habitat for the Columbia River and Klamath River populations, which are the subject of this analysis. 1- 1 1.1 Description of Species and Habitat7 96. Bull trout { Salvelinus confluentus, family Salmonidae) is a char native to waters of western North America. The historic range of bull trout includes major river basins in the Pacific Northwest from about 41° north to 60° north latitude, extending south to the McCloud River in northern California and the Jarbidge River in Nevada, and north to the headwaters of the Yukon River in Northwest Territories, Canada. To the west, bull trout range includes Puget Sound, various coastal rivers of British Columbia, Canada, and southeast Alaska. Bull trout occur in portions of the Columbia River and Snake River basins, extending east to headwater streams in Montana and Idaho, and into Canada. Bull trout also occur in the Klamath River basin of south- central Oregon. East of the Continental Divide in Canada, the bull trout's range includes the headwaters of the Saskatchewan River in Alberta, and the MacKenzie River system in Alberta and British Columbia. 97. Bull trout were first described as Salmo spectabilis by Girard in 1856 from a specimen collected on the lower Columbia River near The Dalles, Oregon, and subsequently described under a number of names such as Salmo confluentus and Salvelinus malma. Bull trout and Dolly Varden ( Salvelinus malma) were previously considered a single species. However, in 1980, the American Fisheries Society formally recognized bull trout and Dolly Varden as separate species. Two of the most useful characteristics in separating the two species are the shape and size of the head. The head of bull trout is more broad and flat on top, unlike Dolly Varden. Bull trout have an elongated body and large mouth, with the maxilla ( jaw) extending beyond the eye and with well- developed teeth on both jaws and head of the vomer ( a bone in teleost fishes that form the front part of the roof of the mouth and often bears teeth). Bull trout have 11 dorsal fin rays, nine anal fin rays, and the caudal fin is slightly forked. Although they are often olive green to brown with paler sides, color is variable with locality and habitat. 98. Bull trout exhibit both resident and migratory life history strategies. Resident bull trout complete their entire life cycle in the tributary streams where they spawn and rear. Migratory bull trout spawn in tributary streams where juvenile fish rear from one to four years before migrating to either a larger river or lake, where they spend their adult life, returning to the tributary stream only to spawn. These migratory forms occur in areas where conditions allow for movement from upper watershed spawning streams to larger downstream waters that contain greater foraging opportunities. Bull trout that migrate to a downstream river are referred to as " fluvial" fish, while the term " adfluvial" is used to describe fish that migrate to a lake or reservoir. Resident and migratory forms may spawn in the same areas and either form can produce resident or migratory offspring. 7 Information on the bull trout and its habitat is taken from the U. S. Fish and Wildlife Service, Proposed Designation of Critical Habitat for the Klamath River and Columbia River Distinct Population Segments of Bull Trout, November 29, 2002 ( 67 FR 71235- 71284). 1- 2 99. The Klamath River population segment consists of bull trout in the Upper Klamath Lake, Sprague River, and Sycan River watersheds in Oregon. Historical records suggest that bull trout were once widely distributed and exhibited diverse life- history traits in the Klamath River basin. Currently, bull trout in this basin are non- migratory fish that are confined to headwater streams. The local populations that remain reside in an estimated 21 percent of the historic range of bull trout in the Klamath River basin, and they are isolated from one another. 100. The Columbia River population segment includes bull trout residing in portions of Oregon, Washington, Idaho, and Montana. The Bull Trout Draft Recovery Plan ( Draft Recovery Plan) ( Service 2002) identifies 22 recovery units within the Columbia River basin: the Willamette River ( upper tributaries including the McKenzie River), Lower Columbia River ( principally the Lewis, White Salmon, and Klickitat Rivers), Hood River, Deschutes River, Odell Lake, John Day River, Umatilla and Walla Walla Rivers, Middle Columbia River ( principally the Yakima River), Snake River ( including Asotin Creek and Tucannon River), Grande Ronde River, Clearwater River, Salmon River, Little Lost River, Imnaha River, Hells Canyon ( including Powder River), Malheur River, Southwest Idaho, Upper Columbia River ( principally the Wenatchee, Entiat, and Methow Rivers), Northeast Washington, Clark Fork River, Kootenai River, and Coeur d'Alene Lake. Bull trout are estimated to have once occupied about 60 percent of the Columbia River basin; they presently occur in approximately 45 percent of their historic range. Although still somewhat widely distributed in the Columbia River basin, bull trout occur in low numbers in many areas and populations are considered depressed or declining across much of their range. 101. Many factors have contributed to the decline of bull trout in the Columbia and Klamath River basins. However, several appear to be particularly significant: ( 1) fragmentation and isolation of local populations due to dams and water diversions that have eliminated habitat, altered water flow and temperature regimes, and impeded migratory movements; ( 2) degradation of spawning and rearing habitat in upper watershed areas, particularly alterations in sedimentation rates and water temperature resulting from past forest and rangeland management practices and intensive development of roads; and ( 3) the introduction and spread of non- native species, particularly brook trout ( Salvelinusfontinalis) and lake trout ( Salvelinus namaycush), which compete with bull trout for limited resources and, in the case of brook trout, hybridize with bull trout. 102. Bull trout have more specific habitat requirements than most other salmonids. Habitat components that influence bull trout distribution and abundance include water temperature, cover, channel form and stability, spawning and rearing substrate conditions, and migratory corridors. 103. Bull trout are found primarily in cold streams; water temperatures above 15° Celsius ( C) ( 59° Fahrenheit ( F)) are believed to limit bull trout distribution. Adult bull trout have been observed in large rivers throughout the Columbia River basin in water temperatures up to 20° C ( 68° F); however, there are documented steady and substantial declines in 1- 3 abundance in stream reaches where water temperature ranged from 15° to 20° C ( 59° to 68° F). In large rivers, bull trout are often observed " dipping" into the lower reaches of tributary streams, and it is suspected that cooler waters in these tributary mouths may provide important thermal refugia, allowing them to forage, migrate, and overwinter in waters that would otherwise be, at least seasonally, too warm. 104. Preferred spawning habitat consists of low- gradient stream reaches with loose, clean gravel, and water temperatures that range from 4° to 10° C ( 39° to 51° F). Such areas are often associated with cold- water springs or groundwater up- welling. Because bull trout eggs incubate about seven months in the gravel, they are especially vulnerable to fine sediments and water quality degradation. Increases in fine sediment appear to reduce egg survival and emergence. Juveniles are likely similarly affected, as they also live on or within the stream bed cobble. 105. Throughout their lives, bull trout require complex forms of cover, including large woody debris, undercut banks, boulders, and pools. Bull trout are opportunistic feeders, with food habits that are primarily a function of size and life- history strategy. Resident and juvenile migratory bull trout prey on terrestrial and aquatic insects, macro- zooplankton, and small fish. Adult migratory bull trout feed almost exclusively on other fish. 106. The ability to migrate is important to the persistence of bull trout. Maintaining the full complement of bull trout life history forms appears to be important for long- term population persistence in a dynamic and unpredictable environment. Migratory bull trout become much larger than resident fish in the more productive waters of larger streams and lakes, leading to increased reproductive potential. Migration also results in increased dispersion of the population which facilitates gene flow among local populations when individuals from different local populations interbreed, stray, or return to non- natal streams. Local populations that are extirpated by catastrophic events may also become re- established by bull trout migrants. 107. Introduced brook trout threaten bull trout through hybridization, competition, and possibly predation. Hybridization between brook trout and bull trout has been reported in Montana, Oregon, Washington, and Idaho. In addition, brook trout mature at an earlier age and have a higher reproductive rate than bull trout. This difference appears to favor brook trout over bull trout when they occur together, often leading to the decline or extirpation of bull trout. Brook trout also appear to adapt better to degraded habitat than bull trout and are more tolerant of high water temperatures. Non- native lake trout also negatively affect bull trout. In a study of 34 lakes in Montana, Alberta, and British Columbia, lake trout appeared to limit foraging opportunities and reduce the distribution and abundance of migratory bull trout in mountain lakes. 108. The Service determined the primary constituent elements of bull trout habitat from studies of their habitat requirements, life history characteristics, and population biology, as outlined above. These primary constituent elements are: 1- 4 Permanent water and associated substrate having low levels of contaminants such that normal reproduction, growth and survival are not inhibited; Water temperatures ranging from 2° to 15° C ( 37° to 59° F). Adequate thermal refugia may be necessary for persistence of bull trout if water temperatures commonly exceed this range. Specific temperatures within this range will vary depending on bull trout life history stage and form, geography, elevation, diurnal and seasonal variation, shade, such as that provided by riparian habitat, and local groundwater influence; • Complex stream channels with features such as woody debris, side channels, pools, and undercut banks to provide a variety of depths, velocities, and instream structures; • Substrates of sufficient amount, size, and composition to ensure success of egg and embryo overwinter survival, fry emergence, and young- of- the- year and juvenile survival. A minimal amount of fines less than 0.63 cm ( 0.25 in) in diameter and minimal substrate embeddedness are characteristic of these conditions; • A natural hydrograph, including high, low, peak, and base flows within historic ranges or, if regulated, a hydrograph that demonstrates the ability to support bull trout populations; • Springs, seeps, groundwater sources, and subsurface water connectivity to contribute to water quality and quantity; • Migratory corridors with minimal physical, biological or chemical barriers between spawning, rearing, overwintering, and foraging habitats, including intermittent or seasonal barriers induced by high water temperatures or low flows; • An abundant food base including terrestrial organisms of riparian origin, aquatic macroinvertebrates, and forage fish; and • Few or no predatory, interbreeding, or competitive non- native species present. An area need not include all of these elements to qualify for designation as critical habitat. 1.2 Proposed Critical Habitat 109. The areas proposed for designation as critical habitat for the bull trout provide one or more of the primary constituent elements described above. All of the proposed areas require special management considerations to ensure their contribution to the conservation of the bull trout. The critical habitat area consists of 18,469 river miles and 532,721 acres of lake and reservoir habitat within 25 units. While the lateral extent of proposed riverine 1- 5 critical habitat is the width of the stream channel defined by its bankfull elevation, the designation of critical habitat is expected to impact inland activity. How far inland the designation's effects extend is a more or less a site specific issue. For example, with regards to land- based activities such as timber sales or grazing practices, it is a matter of site specific physical processes such as sediment transport, the local topography, and the size of the drainage basin. Descriptions of each critical habitat unit are provided in Appendix A. 1.3 Framework and Methodology 110. The primary purpose of this analysis is to estimate the economic impact associated with the designation of critical habitat for bull trout. 8 This information is intended to assist the Secretary in making decisions about whether the benefits of excluding particular areas from the designation outweigh the benefits of including those areas in the designation. 9 In addition, this information allows the Service to address the requirements of Executive Orders 12866 and 13211, the RFA, as amended by the SBREFA. 10 111. This chapter provides the framework for this analysis. First, it defines the economic effects considered in the analysis. Second, it establishes the baseline against which these effects are measured. Third, it describes the measurement of direct compliance costs, which include costs associated with, and generated as a result of, section 7 consultations. Fourth, it identifies potential indirect economic effects of the rule resulting from ( 1) compliance with other parts of the Act potentially triggered by critical habitat, ( 2) compliance with other laws, and ( 3) time delays and regulatory uncertainty. Fifth, it discusses the need for an economic assessment of the benefits of critical habitat designation. Finally, the section concludes by discussing the time frame for the analysis and the general steps followed in the analysis. 1.3.1 Types of Economic Effects Considered 112. This economic analysis considers both the economic efficiency and distributional effects. For the purpose of this analysis, economic efficiency effects generally reflect the " opportunity costs" associated with the commitment of resources required to comply with the Act. For example, if the activities that can take place on a parcel of private land are limited as a result of a designation, and thus the market value of the land reduced, this reduction in value represents one measure of opportunity cost or change in economic efficiency. Similarly, the costs incurred by a Federal Action agency to consult with the Service under section 7 represent economic opportunity costs. 8 This analysis considers the effects of the regulatory action as proposed in the Federal Register on November 29, 2002 ( 67 FR 71236). M6U. S. C. § 1533( b)( 2). 10 Executive Order 12866, " Regulatory Planning and Review," September 30, 1993; Executive Order 13211, " Actions Concerning Regulations That Significantly Affect Energy Supply, Distribution, or Use," May 18, 2001; 5 U. S. C. § § 601 etseq; and Pub Law No. 104- 121. 1- 6 113. This analysis also addresses how the impacts are distributed, including an assessment of any local or regional economic impacts and the potential effects on small entities and the energy industry. This information can be used by decision- makers to assess whether the effects might unduly burden a particular group or economic sector. 114. For example, while the designation may have a relatively small impact when measured in terms of changes in economic efficiency, individuals employed in a particular sector of the economy in the geographic area of the designation may experience relatively greater effects. The difference between economic efficiency effects and distributional effects, as well as their application in this analysis, are discussed in greater detail below. Efficiency Effects 115. At the guidance of the OMB and in compliance with Executive Order 12866 " Regulatory Planning and Review," Federal agencies measure changes in economic efficiency in order to understand how society, as a whole, will be affected by a regulatory action. 11 In the context of this regulatory action, these efficiency effects represent the opportunity cost of resources used or benefits foregone by society as a result of critical habitat designation and other co- extensive regulations. 12 Economists generally characterize opportunity costs in terms of changes in producer and consumer surpluses in affected markets. 13 116. In some instances, compliance costs may provide a reasonable approximation for the efficiency effects associated with a regulatory action. For example, a landowner or manager may need to enter into a consultation with the Service to ensure that a particular activity will not adversely modify critical habitat. The effort required for the consultation represents an economic opportunity cost, because the landowner or manager's time and effort would have been spent in an alternative activity had the parcel not been included in the designation. When compliance activity is not expected to significantly affect markets — that is, not result in a shift in the quantity of a good or service provided at a given price, or in the quantity of a good or service demanded given a change in price ~ the measurement of compliance costs can provide a reasonable estimate of the change in economic efficiency. 11 Executive Order 12866, " Regulatory Planning and Review," September 30,1993; U. S. Office of Management and Budget, " Circular A- 4," September 17, 2003. 12 The term " co- extensive" is discussed in greater detail in Section 1.3.3. 13 For additional information on the definition of " surplus" and an explanation of consumer and producer surplus in the context of regulatory analysis, see Gramlich, Edward M, A Guide to Benefit- Cost Analysis ( 2nd Ed.), Prospect Heights, Illinois: Waveland Press, Inc., 1990; and U. S. EPA, Guidelines for Preparing Economic Analyses, EPA 240- R- 00- 003, September 2000, available at http:// yosemite. epa. gov/ ee/ epa/ eed. nsf/ webpages/ Guidelines. html. 1- 7 117. Where a designation is expected to significantly impact a market, it may be necessary to estimate changes in producer and consumer surpluses. For example, a designation that precludes the development of large areas of land may shift the price and quantity of housing supplied in a region. In this case, changes in economic efficiency can be measured by considering changes in producer and consumer surplus in the real estate market. 118. This analysis begins by measuring reasonably foreseeable compliance costs. As noted above, in some cases, compliance costs can provide a reasonable estimate of changes in economic efficiency. However, if the designation is expected to significantly impact markets, the analysis will consider potential changes in consumer and/ or producer surplus in affected markets. Distributional and Regional Economic Effects 119. Measurements of changes in economic efficiency focus on the net impact of the regulation, without consideration for how certain economic sectors or groups of people are affected. Thus, a discussion of efficiency effects alone may miss important distributional considerations concerning groups that may be disproportionately affected. OMB encourages Federal agencies to consider distributional effects separately from efficiency effects. 14 This analysis considers the potential for several types of distributional effects, including impacts on small entities; impacts on energy supply distribution and use; and regional economic impacts. It is important to note that these are fundamentally different measures of economic impact than efficiency effects, and thus cannot be added to or compared with estimates of changes in economic efficiency. Impacts on Small Entities and Energy Supply, Distribution and Use 120. This analysis considers how small entities, including small businesses, organizations, and governments, as defined by the RFA, might be affected by critical habitat designation and other co- extensive regulatory actions. 15 In addition, in response to Executive Order 13211 " Actions Concerning Regulations That Significantly Affect Energy Supply, Distribution, or Use," this analysis considers the impacts of critical habitat on the energy industry and its customers. 16 14 U. S. Office of Management and Budget, " Circular A- 4," September 17, 2003. 155U. S. C. § 60\ etseq. 16 Executive Order 13211, " Actions Concerning Regulations That Significantly Affect Energy Supply, Distribution, or Use," May 18, 2001. 1- 8 Regional Economic Effects 121. Regional economic impact analysis provides an assessment of the potential localized effects of critical habitat designation and other co- extensive regulations. Specifically, regional economic impact analysis produces a quantitative estimate of the potential magnitude of the initial change in the regional economy resulting from a regulatory action. Regional economic impacts are commonly measured using regional input/ output models. These models rely on multipliers that mathematically represent the relationship between a change in one sector of the economy ( e. g., hydroelectric power generation) and the effect of that change on economic output, income, or employment in other local industries ( e. g., manufacturers relying on the electricity generated). These economic data provide a quantitative estimate of the magnitude of shifts of jobs and revenues in the local economy. 122. The use of regional input/ output models can overstate the long- term impacts of a regulatory change. Most importantly, these models provide a static view of the economy of a region. That is, they measure the initial impact of a regulatory change on an economy but do not consider long- term adjustments that the economy will make in response to this change. For example, these models provide estimates of the number of jobs lost as a result of a regulatory change, but do not consider re- employment of these individuals over time. In addition, the flow of goods and services across the regional boundaries defined in the model may change as a result of the designation, compensating for a potential decrease in economic activity within the region. 123. Despite these and other limitations, in certain circumstances regional economic impact analysis may provide useful information about the scale and scope of localized impacts. It is important to remember that measures of regional economic effects generally reflect shifts in resource use rather than efficiency losses. These types of distributional effects, therefore, should be reported separately from efficiency effects ( i. e., not summed). In addition, measures of regional economic impact cannot be compared with estimates of efficiency effects. 1.3.2 Defining the Baseline 124. The purpose of this analysis is to measure the economic impact of compliance with the protections derived from the designation of critical habitat, including habitat protections that may be " co- extensive" with the listing of the species ( the term " co- extensive" is described in greater detail in the following section). Economic impacts to land use activities may exist in the absence of co- extensive protections. These impacts may result from, for example: • Local zoning laws; • State and natural resource laws; and 1- 9 • Enforceable management plans and BMPs applied by other State and Federal agencies. 125. Economic impacts that result from these types of protections are not included in this assessment; they are considered to be part of the " baseline." Existing laws, regulations, and policies are described in greater detail in Section 2.3 of this analysis. 1.3.3 Direct Compliance Costs 126. The measurement of direct compliance costs focuses on the implementation of section 7 of the Act. This section requires Federal agencies to consult with the Service to ensure that any action authorized, funded, or carried out will not likely jeopardize the continued existence of any endangered or threatened species or result in the destruction or adverse modification of critical habitat. The administrative costs of these consultations, along with the costs of project modifications resulting from these consultations, represent the direct compliance costs of designating critical habitat. 127. This analysis does not differentiate between consultations that result from the listing of the species ( i. e., the jeopardy standard) and consultations that result from the presence of critical habitat ( i. e., the adverse modification standard). Consultations resulting from the listing of the species, or project modifications meant specifically to protect the species as opposed to its habitat, may occur even in the absence of critical habitat. However, in 2001, the U. S. 10th Circuit Court of Appeals instructed the Service to conduct a full analysis of all of the economic impacts of critical habitat designation, regardless of whether those impacts are attributable co- extensively to other causes. 17 Given the similarity in regulatory definitions between the terms " jeopardy" and " adverse modification," in practice it can be difficult to pre- determine the standard that drives a section 7 consultation. Consequently, in an effort to ensure that this economic analysis complies with the instructions of the 10th Circuit as well as to ensure that no costs of the proposed designation are omitted, the potential effects associated with all section 7 impacts in or near proposed critical habitat are fully considered. In doing so, the analysis ensures that any critical habitat impacts that are co- extensive with the listing of the species are not overlooked. 1.3.4 Indirect Costs 128. A designation may
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Public Review Draft 4- 27- 05 Conservation Plan Miller Lake Lamprey, Lampetra ( Entosphenus) minima April, 2005 Executive summary - The Miller Lake Lamprey was believed extinct after a chemical treatment in ...
Citation Citation
- Title:
- Conservation plan, Miller Lake lamprey, Lampetra (Entosphenus) minima : April, 2005
- Author:
- U.S. Fish and Wildlife Service
- Year:
- 2005
Public Review Draft 4- 27- 05 Conservation Plan Miller Lake Lamprey, Lampetra ( Entosphenus) minima April, 2005 Executive summary - The Miller Lake Lamprey was believed extinct after a chemical treatment in 1958, targeting lamprey and tui chub, extirpated both from Miller Lake. The lamprey population was later recognized to be a distinct species, Lampetra minima ( Bond and Kan 1973). It was the smallest lamprey species in the world ( maturing at less than 4 in), and at that time was known only from Miller Lake, where it was extinct In 1992, a small lamprey caught in the Upper Williamson River was identified as a Miller Lake Lamprey, and subsequent investigations have identified six local populations of this lamprey in two small subdrainages of the Upper Klamath Basin. Management strategies to preserve this species include: conserving appropriate habitat conditions and availability within the natural range of the Miller Lake Lamprey, addressing potential impacts from stocking streams with hatchery fish, reducing entrainment, and establishing connectivity within and between local populations. A man- made barrier built in 1959 still exists on Miller Creek. Originally created to prevent the re- establishment of lamprey in Miller Lake after the chemical treatment, the barrier currently prevents natural dispersal of the Miller Creek population and re- colonization of both extensive habitat in upper Miller Creek and Miller Lake itself. Removal of the barrier, which is in disrepair but continues to exclude lamprey, is feasible and will eliminate the only man- made feature obstructing natural connectivity within the Miller Lake drainage, the species' type locality. This conservation plan is intended to provide guidance for management actions and conservation of the Miller Lake Lamprey. Introduction lhe Miller Lake Lamprey, Lampetra { Entosphenus) minima, is the worlds smallest predatory lamprey, reaching a size of only 3- 6", and is endemic to the Klamath Basin ( Bond and Kan 1973, Gill et al. 2003, Lorion et al. 2000). It is also one of the few species to have " recovered" from extinction. Miller Lake was chemically treated with toxaphene by the Oregon Game Commission on September 16,1958 to eliminate Tui Chub ( Siphateles bicolor) and a population of unidentified lamprey ( Gerlach 1958, Gerlach and Borovicka 1964). The lamprey in Miller Lake was later discovered to have been a unique species, apparently restricted in range to the Miller Lake drainage ( a small, disjunct tributary to the Upper Williamson River), and was scientifically described by Bond and Kan ( 1973) fifteen years subsequent to its presumed extirpation. Public Review Draft 4- 27- 05 Although there appear to be no immediate threats to the Miller Lake Lamprey ( Kostow 2002), the species is of considerable conservation concern due to: 1) its relatively limited range in two small sub drainages of the Klamath Basin, 2) its continued absence in the ecologically unique setting of Miller Lake ( type locality) and 3) its evolutionary distinctiveness as the smallest known predatory lamprey in the world, maturing at less than four inches. Life History Distribution - The Miller Lake Lamprey is currently known from only two small sub- drainages of the Upper Klamath Basin, the upper Williamson River and the upper Sycan River above Sycan Marsh ( Lorion et al. 2000). The upper Williamson River contains four known populations ( Miller Creek, Jack Creek, Klamath Marsh, and mainstem Williamson River above the marsh). Miller Creek, which drains Miller Lake, is within the upper Williamson Watershed, but it goes sub- surface in the pumice soils and does not reach the Klamath Marsh or Williamson River. Miller Lake has presumably been isolated from the rest of the drainage since the eruption of Mt. Mazama ( Crater Lake) over 6,000 years ago. Jack Creek, a small northern tributary to the upper Williamson River, is also generally disjunct from the mainstem Williamson River due to low, intermittent surface flows in its lower reaches. The Upper Sycan drainage ( a northern tributary of the Sprague River) contains two principal populations, Long Creek drainage and the upper Sycan River drainage above Sycan Marsh. Lamprey have been documented in Coyote Creek and Shake Creek above Sycan Marsh by Nature Conservancy. Lamprey in Shake Creek have not been identified to species. Geographic Variability - In general, individuals from the modern Williamson and Sycan sub-drainages are morphologically similar ( Lorion et al. 2000). However, there are indications of geographic differences between populations. The Sycan populations exhibit significantly higher variability in the number of bicuspid posterial teeth, and the Miller Creek population generally tend to be darker on their ventral surface. Specimens from the original Miller Lake population ( pre- 1958) had, on average, fewer anterial teeth. They also tended to have larger eyes and oral disks relative to total length when compared to modern populations; however, this appears to be due to their slightly smaller size. The available genetic information also indicates that there are geographic differences in the mitochondrial genome ( mtDNA) between Sycan ( Sprague) and Williamson lamprey populations, with one haplotype found only in the Upper Sycan and another limited to lamprey populations in the Sprague River drainage ( Lorion et al. 2000). Continued genetic work on the Klamath lamprey fauna, examining additional genes, indicates that the population of lamprey in Miller Creek may be genetically different than both the other upper Williamson and Sycan populations ( Docker pers. com. 2004). Habitat - Miller Lake Lampreys currently occupy relatively cool, clear streams ( Gunckel and Reid 2004, Kan and Bond 1981, Lorion et al. 2000, Reid pers. com. 2004). Adults are generally associated with structural cover, including loose rocks and woody debris. In lower Miller Creek, where rocky habitat is limited, adult lampreys were consistently found in woody debris jams and even under seat boards from an old outhouse that had fallen into the creek ( Reid pers. obs. 1998). Ammocoetes ( a larval stage lasting about 5 years) live in the substrate and are generally Public Review Draft 4- 27- 05 associated with depositional environments. In streams, ammocoetes are frequently found in silty backwater areas, low energy stream edges, and in pool eddies where leaf litter and other organics ( including adult lamprey carcasses) tend to accumulate. At night ammocoetes may move into the water column to disperse downstream or into more favorable habitat. In Miller Lake ammocoetes were found in organic detritus all along the shoreline but rarely in the extremely cold tributaries flowing into the lake ( Kan and Bond 1981). Recent extensive collections of Pacific Lamprey ammocoetes along the coast indicate that ammocoetes do not occupy otherwise apparently suitable sediments if the upper layer is poorly oxygenated ( Reid and Goodman pers. obs. 2004). Reproduction - Miller Lake Lampreys spawn in shallow redds in clean gravels and sand, which are moved out of the redd by lamprey sucking onto small rocks and actively moving them out of the way ( Markle pers. com. 2004, Reid pers. com. 2004). In streams, redds are generally made in shallow water, often at the tail of a pool or run, and are roughly 10 cm in diameter and a few centimeters deep. In Miller Lake, lampreys were observed spawning in water as deep as 20 feet ( Cochrun 1951b, Kan and Bond 1981). Males attach to the female's head and wrap around her body, aligning genitals and allowing fertilization of the eggs as they emerge. Eggs are heavier than water and are mixed into the bottom of the redd by spawning actions. Kan and Bond ( 1981) found that female lampreys from Miller Lake contained an average of about 600 eggs. Time to hatching is not known, but is probably on the order of a few weeks. Larvae ( ammocoetes) emerge at about 8 mm and move into fine sediments. Adults die after spawning. Feeding - Miller Lake Lampreys feed on fish only as adults. Ammocoetes have no eyes or teeth and are purely filter feeders, burrowing in the sediment and feeding on suspended microorganisms and algae. The ammocoete phase lasts about five years, during which time the ammocoetes grow to around 150 mm. After transformation, adults enter a predatory phase before spawning that generally lasts for less than a year ( from transformation in the summer/ fall to spawning in summer of the following year). Adults feed primarily on flesh that is gouged and rasped out of a small wound (<= 11 mm) under the sucking disk ( Cochran 1994, Kan and Bond 1981). Adults apparently show little selectivity for prey. The adult lampreys in Miller Lake historically fed on both tui chubs and available salmonids ( rainbow, brook and juvenile brown trout) in Miller Lake ( Kan and Bond 1981). They also scavenged dead tui chubs and trout, as well as cannibalizing other lampreys. In Miller Creek, most recent observations found occasional lamprey wounds on brook trout, which were the most abundant species in the creek, but it is probable that lampreys also feed on both rainbows and young brown trout in the creek ( S. Reid pers. obs. 1998). In Jack Creek lampreys feed on speckled dace, the only other fish present in the stream, and in the Upper Sycan they feed on both trout and dace. Unlike other predatory lampreys, but similar to non- feeding brook lampreys, adult Miller Lake Lampreys loose body length and mass between the time they transform and actual spawning, indicating that energetic needs and gonadal development are not compensated for by the amount of food they consume ( Hubbs 1971, Kan and Bond 1981, Lorion et al. 2000). Lamprey / Trout Interaction - Although there have been no direct studies of the ecological interaction between lampreys and trout in the Klamath Basin, it is notable that healthy trout and lamprey populations coexist throughout the basin. Lampreys certainly prey on trout, and both adult lampreys and ammocoetes may represent a significant food resource to piscivorous adult Public Review Draft 4- 27- 05 trout. Native redband trout co- exist with much larger predatory lampreys (" Klamath Lake Lamprey", Lampetra { Entosphenus) sp., and Klamath River Lamprey, L. ( E.) similis) in Upper Klamath Lake. A large percentage of the trophy redband trout in Upper Klamath Lake, as well as both redband and brown trout in the Wood and Williamson Rivers, exhibit recent or healed lamprey scars. In smaller streams where Miller Lake Lampreys ( length 3- 6 in) co- exist with native and introduced trout ( redband, bull, brook and brown trout), there appears to be little impact to adult trout, and local fishermen are rarely even aware of the presence of the lamprey ( S. Reid, pers. comm. 2004, R. Smith, pers. comm. 2004). Surveys by USFWS and USFS in 1998- 1999 found that very few of the trout in Miller Creek, the Williamson or upper Sycan Rivers had scars, and during extensive snorkeling surveys, only a few trout were actually observed with lampreys attached ( S. Reid USFWS pers. com., 2004). Historical reports from Miller Lake prior to the extirpation of lampreys indicate that tui chubs were the principal prey, and dead tui chubs were often reported ( Cochrun 1951a, b, Gerlach 1958, Kan 1975, Kan and Bond 1981). Some cannibalism on other lampreys, as well as scavenging of dead fish carcasses, was also observed ( Kan and Bond 1981). Specific mortality of adult trout was not reported, although large trout were noted to have collections of scars and some mortality of fingerlings was observed. Recent observations of occasional fingerling trout mortality and much more frequent lethal predation on speckled dace (< 10 cm TL) in the Sycan River and Jack Creek, as well as the observation of apparently healthy adult trout with healed wounds, suggests that lethal predation on trout is generally limited to fingerlings ( Markle pers. com. 2004, Reid pers. com. 2004, Smith pers. com. 2004). It is not believed that predation on Miller Lake lamprey by piscivorous adult trout has been a threat to the sustainability of lamprey populations. These populations have co- evolved with native trout and appear to be productive enough to withstand some level of predation. The Jack Creek population is an exception. Jack Creek is believed to only support populations of Miller Lake lamprey and speckled dace. Since this lamprey population evolved absent predation from trout, there is a concern that an introduction of piscivorous adult trout could upset the ecological balance in Jack Creek and present a threat to both the lamprey and dace populations. For this reason, stocking of hatchery fish is prohibited by rule in Jack Creek or other streams containing Miller Lake lamprey. Miller Lake Fisheries - Miller Lake currently supports a recreational trout fishery of entirely introduced species. Miller Lake's one notable native species, the Miller Lake Lamprey, was thought extinct when the Oregon Department of Fish and Wildlife Commission approved the current Klamath Basin Fish Management Plan ( ODFW 1997). Today, Miller Lake provides a popular " catchable" and fingerling rainbow trout program, a trophy brown trout fishery, and an under- utilized kokanee population of small- sized individuals ( Smith pers. com. 2004). Due to the role of Miller Lake as a recreational fishery and concerns over the potential impact of lampreys on introduced trout populations in the lake, the history and status of Miller Lake fisheries are summarized below by species. Rainbow trout fingerlings ( 2- 4 inches) were planted in Miller Lake until 1948, when stocking was discontinued due to poor returns. At that time, the poor rainbow fishery was believed to have been due to lamprey predation and competition with resident tui chubs ( Cochrun 1950, Public Review Draft 4- 27- 05 1951a). However, based on the reported poor performance of stocked fingerling rainbows post-treatment ( see below), without either lampreys or tui chubs, it appears that local habitat conditions, and not trophic competition with tui chub or parasitism by lamprey, were driving the poor rainbow population dynamics. Recent observations by ODFW biologists have indicated that while the rainbow trout in Miller Lake are surviving, growing and being harvested by anglers, survival and growth have been, at best, marginal ( Smith pers. com. 2004). Trapnet samples in Miller Lake have been very inefficient at capturing older age class rainbow trout so the average size of sampled trout is not representative of the fish that are available for angler harvest. While trapnet sets typically made in the fall are not particularly good indicators of the rainbow population in Miller Lake, Trapnet sampling of rainbow trout documented an average length of approximately 8 inches in 1988 and approximately 4 inches in 1997. The release of catchable- sized rainbow trout into Miller Lake was initiated in 2001 to supplement the ongoing fingerling stocking program. Brown trout were first introduced into Miller Lake in 1981 and have been stocked annually since. Although small numbers may have been present prior to treatment. Survival and growth of brown trout has been excellent ( Smith pers. com. 2004). Brown trout averaged approximately 17 inches in length in 1998 and approximately 16 inches in 2001. Larger fish captured in trap net sets exceed 10 pounds. Miller Lake was identified by sport- fishing author Denny Rickards as one of the top ten brown trout producing lakes in the western United States. Lampreys themselves, as well as their impaired prey, might in turn serve as additional prey for the large, highly piscivorous brown trout. Stocks of kokanee were introduced to Miller Lake from several states between 1964 and 1971 ( all post- treatment). Kokanee have been very successful reproducing and stocking has not been necessary since 1971. The average size of maturing adults have remained relatively small. Miller Lake is an oligotrophic lake with very low productivity ( Johnson et al. 1985). The length of maturing female kokanee ranged between 7.5- 10 inches between 1965 tol972, and the average size of kokanee females in 2001 was approximately 8 inches. Based on the relatively small length of maturing kokanee females, it appears that environmental conditions or interspecific competition with other trout are driving the kokanee population dynamics. Brook trout were stocked in Miller Lake from the 1930' s until 1948. Brook trout were present in Miller Creek and apparently survived in tributaries during the 1958 treatment, since seven brook trout ( 6- 14 in) were gill- netted from the lake in 1964, prior to introduction of 85,000 kokanee and 150,000 rainbow fingerlings. No brook trout are currently stocked into the lake or tributaries of the lake. A healthy self- sustaining population of brook trout is currently present in Miller Creek, below the lamprey barrier, where they have apparently coexisted with lampreys since both recovered from the 1958 treatment. Tui chubs were present in Miller Lake prior to the 1958 treatment. It is not known whether tui chub were a native or introduced population. However, based on the elevation and atypical tui chub habitat in the lake, it is believed to have been an un- authorized introduction, most probably as a baitfish. Trophic competition between tui chub and rainbow trout has been consistently demonstrated in several Oregon lakes, including Diamond Lake in Douglas County. Tui chub or " roach" problems in Miller Lake were identified by Ken Cochrun ( Fisheries Agent, Oregon State Public Review Draft 4- 27- 05 game Comm.) in his 1950 and 1951 annual reports ( Cochrun 1950, 1951a). However, Mr. Cochrun felt that the " large population" of tui chub would be relatively easy to control compared to the lamprey and hence the need for the radical chemical treatment with toxaphene, which would eliminate both species, rather than rotenone, which would have limited effect on the lamprey ammocoetes in the substrate. In the 1950' s, as is still the case, considerable amount of time was expended by fishery districts controlling tui chub (" roach"), as noted in Mr. Cochrun's annual reports. Tui chubs were never restocked after the treatment and are no longer present in the Miller Lake drainage. One of the goals of this conservation plan for the Miller Lake Lamprey is to re- establish a lamprey population in Miller Lake itself. Historical reports from Miller Lake prior to the extirpation of lampreys nowhere mention specific mortality of adult trout, even when lamprey were abundant, although large trout were noted to have collections of scars ( see above - Lamprey/ Trout Interaction). Based on historical accounts and recent observations from the Upper Sycan drainages, mortality when observed has been on small fish (< 10cm TL). Observations from Miller Lake in the past and recent observations of trophy redband trout fisheries in Upper Klamath Lake indicate that little to no effect is experienced by the fish based on the occurrence of healed lamprey scars. Self- sustaining populations of brown and brook trout ( unstocked) currently coexist with lampreys in Miller Creek below the lamprey barrier. Were lamprey to become reestablished in Miller Lake, they would probably feed primarily on juvenile kokanee, which are abundant in the lake. Although lamprey predation on adult trout may result in some stress and condition loss, the principal effect on adult kokanee and trout fisheries in Miller Lake is likely to be aesthetic, with small round wounds (< l/ 2 in), or scars, on the side of fish. Future Recreational Fish Management The recreational trout and kokanee salmon fisheries in Miller Lake are an extremely valuable fish resource to local community and anglers. All efforts will be made by the Oregon Department of Fish and Wildlife to continue to offer angling recreation at current harvestable levels. In the unlikely event that the re- establishment of the Miller Lake lamprey adversely impacts the trout and kokanee population abundance, then additional fish stocking or other compatible management actions will be initiated as necessary to meet recreational fishery management objectives. Conservation Plan Note: Underlined, bold text in italics represents those portions of the conservation plan that are proposed to be adopted into Oregon Administrative Rule by the Oregon Fish and Wildlife Commission. Purpose This conservation plan is intended to provide guidance for management actions and conservation of the Miller Lake lamprey, Lampetra ( Entosphenus) minima. This is the first step in securing populations that currently exist in the Klamath Basin and in Public Review Draft 4- 27- 05 determining their status, abundance, distribution, and life history needs. As new information on the lamprey becomes available it is expected that this document will be modified and updated to reflect the current state of our knowledge. Species Management Unit and Population Description The Miller Lake Lamprey species management unit is comprised of six documented populations and one uncertain population. They are: • Mainstem Upper Williamson River above Klamath Marsh • Miller Creek • Jack Creek • Sycan River above Sycan Marsh • Long Creek • Coyote Creek • Shake Creek ( lamprey present have not been identified to species) Desired Status The desired status of the Miller Lake lamprey is for the species to be distributed widely throughout its historic range, with populations robust enough to withstand stochastic environmental events, and with both the populations and their habitat secure from anthropogenic threats. Current Status The Miller Lake Lamprey is endemic to the Klamath Basin and was recently re- described ( Lorion et al 2000). It is currently known from two sub- drainages. The Williamson River sub- drainage includes populations in Miller Creek, Jack Creek, Klamath Marsh and the mainstem upper Williamson River. In the Sycan sub- drainage the lamprey exists in Long Creek and in the upper Sycan River above the Sycan Marsh. Information regarding the abundance and population structure of Miller Lake lamprey in these systems is not available, and only anecdotal information is available for the life history or habitat requirements of the species. For detailed information on the current information available for the species see Life History section. No immediate threats to the Miller Lake Lamprey are known to currently exist, except for the barrier to connectivity between Miller Creek and Miller Lake. Public Review Draft 4- 27- 05 Management Strategies The short- and long- term management strategies for the Miller Lake Lamprey species management unit are: Short- term Strategy a) Re- establish connectivity to Miller Lake. Long- term Strategies b) Ensure appropriate habitat conditions and availability within the natural range of Miller Lake lamprey. c) Reduce entrainment or the potential for entrainment of adult and larval lampreys into water diversions. d) Reduce stranding or the potential for stranding of larval lampreys in dewatered segments of streams below water diversions. e) Maintain unobstructed opportunities, within and among populations for genetic exchange, natural dispersal or migration activities, and re- colonization of unoccupied portions of historical habitat. f) No hatchery fish shall be stocked in streams that support Miller Lake lamprey. Management strategies are those general conditions relevant to the conservation of the species that are considered essential to ensure its long- term survival within its natural range. Although there are many aspects of a species life- history and management that may play a role in the species' biology, the management strategies include those aspects that are currently considered to be both essential for its long- term survival and that are potentially at risk. Conservation Actions Conservation actions are those specific activities or projects that have been identified as appropriate for the realization of the above conservation goals. General - Due to the general lack of information about the life- history, habitat requirements, and distribution of the Miller Lake Lamprey, any studies which increase our understanding of the species will contribute to future conservation planning and should be supported. Habitat - At this time, the general habitat requirements of the Miller Lake Lamprey populations in the upper Williamson and upper Sycan drainages appear to be similar to those of the native trout populations, and habitat restoration or enhancement projects that benefit the trout populations should be beneficial to the lamprey as well. However, there may be specific differences between these species that should be considered in future projects as our understanding of the lamprey's life- history increases. Public Review Draft 4- 27- 05 Entrainment - At this time there has been no evaluation of potential entrainment risks to the Miller Lake Lamprey. Unscreened or improperly screened irrigation diversions currently exist on the upper Sycan and upper Williamson River systems. Private irrigator participation into the screening program should continue to be encouraged and supported. Stranding - At this time there has been no evaluation of potential stranding risks to the Miller Lake Lamprey. Current water diversions reduce the stream flow in segments of the streams directly below the diversion point. Minimum stream flows or gradual ramping strategies should be encouraged where practicable. Connectivity - The Miller Lake Lamprey is not known to carry out extensive spawning migrations. However, due the tendency for ammocoetes to drift downstream during the multi- year larval stage, it is essential that local populations have free upstream passage opportunities during the period when adults are residing in the stream. The swimming characteristics and passage capabilities of trout ( for whom many fish ladders are designed) and lamprey are very different. Lamprey- friendly ladders or passage corridors should be encouraged in the design phase of new projects, and occupied lamprey streams should be evaluated for the presence of older fish ladders, as well as other artificial barriers. Re- establishment of the Miller Lake population - Miller Lake itself, the type locality for the species, remains the only known historical habitat from which the Miller Lake Lamprey is known to have been extirpated. It also represents both an ecologically unique habitat and a crucial component in the evolutionary legacy of the species. Following the extirpation of lampreys from Miller Lake in 1958, a lamprey barrier was constructed in Miller Creek to prevent recolonization of the lake from Miller Creek. The barrier remains in place today. Removal of this barrier should have a high priority in order to meet the conservation goals for the Miller Lake Lamprey and is discussed in more detail below. The barrier was constructed by the State of Oregon Game Commission in 1959 at the upstream extent of a short, high- gradient cascade in Miller Creek approximately 54 mile downstream from the outlet of Miller Lake and forest road 9772. It consists of a low stonework dam ( about 2 ft high) constructed of mortared native rocks, with a metal plate and lip bolted on top. The configuration is very effective as a man- made barrier to fish passage. However, the current condition of the concrete and rock structure is substantially deteriorated. A recent examination by ODFW, USFWS and USFS personnel indicates that the structure would be relatively easy to remove using hand tools without adverse instream impacts ( evaluated by R. Smith et al., September 2003). Recent baseline surveys ( August 2004) of lamprey ammocoetes in the Miller drainage indicate that they are apparently limited to less than two miles of low- gradient stream in lower Miller Creek ( Gunckel and Reid 2004). Allowing lampreys to re- establish a population above the cascade in Miller Creek and Miller Lake will aid in creating an additional buffer against stochastic events that could otherwise eradicate this geographically limited population. Additional surveys should be scheduled on a five- 10 Public Review Draft 4- 27- 05 year basis to evaluate status of the population and the success of re- colonization efforts. Removal of the barrier should allow natural expansion of the population and recolonization of the lake from the Miller Creek population, which survived the original extirpation. Information Gaps 1) Life history - very little quantitative information is available on the life history and habitat requirements of either ammocoetes or adults with which to guide management decisions. 2) Distribution - current understanding of distribution is based on surveys in the 1990' s that primarily focused on the Williamson and Sprague River drainages. Other potential areas in the Klamath Basin outside these drainages have not been properly surveyed. 3) No specific population or fine- scale distributional surveys have been undertaken for any populations outside of the Miller Lake drainage. 4) Preliminary morphological and genetic information suggests that there are regional differences between the various populations of Miller Lake Lamprey in the Klamath Basin. However, the available information is not yet sufficient for making management decisions relative to population independence or uniqueness. Strategies to Address Gaps 1) A Miller Lake Lamprey Technical Management Team has been formed to promote investigation, management and conservation of the Miller Lake Lamprey. This team currently consists of biologists from ODFW ( Roger Smith and Stephanie Gunckel), Oregon State University ( Douglas Markle), the Western Lamprey Project ( Stewart Reid), and the Great Lakes Inst. Environmental Research ( Margaret Docker - lamprey genetics). 2) ODFW will, where appropriate, incorporate lampreys into their fish survey protocols in the Klamath Basin and will seek to collaborate with other researchers carrying out lamprey surveys in the Basin. 3) ODFW and the Miller Lake Lamprey Technical Management Team will promote the investigation of morphological and genetic information informative to resolving regional differences between the various populations of Miller Lake Lamprey. 11 Public Review Draft 4- 27- 05 Research, Monitoring and Evaluation Research Promote scientific studies of the Miller Lake Lamprey to aid in the conservation of the Monitoring Where appropriate, incorporate lampreys into fish survey protocols in the Klamath Basin and seek to collaborate with other researchers carrying out lamprey surveys in the Basin. Evaluation Periodically evaluate the status of Miller Lake lamprey and the success of the conservation plan management strategies. Research - Due to the paucity of available quantitative information on the distribution, life history, habitat requirements of either ammocoetes or adults, ODFW will promote scientific studies of the Miller Lake Lamprey to aid in the conservation of the species. Monitoring - ODFW, in collaboration with USFWS, has documented baseline distribution of the fish in Miller Creek with the lamprey barrier in place ( Gunckel and Reid 2004). Monitoring of the population will continue to evaluate upstream movement, distribution, abundance, and re- colonization of the lake through the cooperative effort of ODFW and the Miller Lake Lamprey Technical Management Team. The ODFW and the Technical Management Team, will meet and discuss progress after the barrier has been removed, and the lampreys have had unobstructed passage to Miller Lake for five years. Adaptive Management a) A Miller Lake Lamprey Technical Management Team shall be formed. b) The Miller Lake Lamprey Technical Management Team shall meet periodically to review the success of the management actions identified in the Miller Lake Lamprey Conservation Plan and identify modifications to management actions that are needed to achieve the desired status for Miller Lake lamprey. No immediate threats to the Miller Lake Lamprey are known to currently exist, except for the barrier in Miller Creek. The Miller Lake Lamprey Technical Management Team ( see under Strategies to Address Gaps) has been formed to promote investigation, management and conservation of the Miller Lake Lamprey. The team will meet periodically to evaluate current status and management strategies in light of new information. 12 Public Review Draft 4- 27- 05 Current management action is proposed for removal of the Miller Creek Barrier. The lamprey population in Miller Creek will continue to be monitored by ODFW following the 2004 baseline surveys. After five years the Miller Lake Lamprey Technical Management Team will evaluate the status of the Miller Creek population and the success of natural re- colonization of Miller Lake. If sufficient progress has not been made, then discussions regarding active re- introduction of lampreys to the lake will be initiated. Trigger for Plan Modification Substantial negative changes in the distribution or abundance of the Miller Lake lamprey, or the recognition of new threats to the species, shall prompt a review of the species management unit's status and all Miller Lake Lamprey Conservation Plan management strategies by the Miller Lake Lamprey Technical Management Team. Appropriate modifications to the Miller Lake Lamprey Conservation Plan intended to better achieve the desired status identified in the Plan shall be proposed by the Miller Lake Lamprey Technical Management Team. Reporting a) The Miller Lake Lamprey Technical Management Team shall periodically report on the status of Miller Lake lamprey and the effectiveness of the management strategies identified in the Miller lake Lamprey Conservation Plan. b) Annual Miller Lake Lamprey data collected and any reports on the status of Miller Lake Lamprey or evaluations of the Miller Lake Lamprey Conservation Plan shall be made available to the public. The staff of the ODFW's Klamath Watershed District and Native Fish Research Project will periodically report monitoring and research results through native fish conservation strategy stock status reviews. 13 Public Review Draft 4- 27- 05 Citations Bond, C. E. and T. T. Kan. 1973. Lampetra ( Entosphenus) minima n. sp., a dwarfed parasitic lamprey from Oregon. Copeia 1973: 568- 574. Cochran, P. A. and R. E. Jenkins. 1994. Small fishes as hosts for parasitic lampreys. Copeia 1994: 499- 504. Cochrun, K. 1950. Annual Report - Fishery Division, Central Region, Klamath District: Miller Lake. Oregon State Game Commision. Cochrun, K. 1951a. Annual Report - Fishery Division, Central Region, Klamath District: Miller Lake. Oregon State Game Commision. Cochrun, K. 1951b. Letter to Dr. HJ. Rayner, Chief of Fisheries Operations, Oregon State Game Commission. 4 November 1951. Gerlach, A. 1958. Rehabilitation of Miller Lake, 1958. Report to files - Fishery Division, Central Region, Klamath District. Oregon State Game Commision. Gerlach, A. 1959. Annual Report - Fishery Division, Central Region, Klamath District: Miller Lake. Oregon State Game Commision. Gerlach, A. and R. Borovicka. 1964. State- wide fishery rehabilitation: Miller Lake and tributaries segment ( Completion Report F- 20- D- 11). Oregon State Game Commission. Gill, H. S., C. B. Renaud, F. Chapleau, R. L. Mayden and I. C. Potter. 2003. Phylogeny of living parasitic lampreys ( Petromyzontiformes) based on morphological data. Copeia 2003: 687- 703. Gunckel S. and S. Reid. 2004. Baseline survey of Miller Lake Lamprey ( Entosphenus minimus) ammocoete distribution in the Miller Lake subdrainage. Oregon Dept. Fish and Wildlife. Hubbs, C. L. 1971. Lampetra ( Entosphenus) lethophaga, new species, the nonparasitic derivative of the Pacific lamprey. Trans. San Diego Soc. Nat. Hist. 16: 125- 164. Johnson, D. M., R. R. Peterson, D. R. Lycan, J. W. Sweet, M. E. Neuhaus and A. L. Schaedel. 1985. Miller Lake In Atlas of Oregon Lakes. Oregon State Univ. Press. Corvallis, Oregon. Kan, T. T. 1975. Systematics, variation, distribution, and biology of lampreys of the genus Lampetra in Oregon. Doctoral Dissertation, Oregon State Univ., Corvallis, Oregon. Kan, T. T. and C. E. Bond. 1981. Notes on the biology of the Miller Lake lamprey Lampetra { Entosphenus) minima. Northwest Sci. 55: 70- 74. 14 Public Review Draft 4- 27- 05 Kostow, K. 2002. Oregon lampreys: natural history, status and analysis of management issues. Info. Rept. 2002- 01, Fish Division, Oregon Dept. Fish and Wildlife. Lorion, CM., D. F. Markle, S. B. Reid and M. F. Docker. 2000. Redescription of the presumed-extinct Miller Lake Lamprey, Lampetra minima. Copeia 2000: 1019- 1028. Oregon Dept. Fish and Wildlife. 1997. Klamath River Basin, Oregon - Fish Management Plan, August 22, 1997. Personal Communications Docker, Margaret F. - Great Lakes Inst. Environmental Research, Univ. Windsor; 401 Sunset Ave, Windsor, ON N9B 3P4 Goodman, Damon - Fisheries Biology, Humboldt State Univ.; 1 Harpst Street, Arcata, CA 95521- 8299 Markle, Doug F. - Dept. Fisheries and Wildlife, Oregon State Univ.; 104 Nash Hall, Oregon State Univ., Corvallis, OR 97331- 3803 Reid, Stewart B. - U. S. Fish and Wildlife Service, Endangered Species Division; 6610 Washburn Way, Klamath Falls, OR 97603; Current address - Western Fishes, 2045 East Main, Ashland OR 97520 Smith, Roger C. - District Fish Biologist, Oregon Dept. Fish and Wildlife; 1850 Miller Island Road West, Klamath Falls, OR 97603 15