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• 1. [Image] Colorado geothermal institutional handbook: a user's guide of agencies regulations, permits, and aids for geothermal development

  	The following are included: principal state agencies, applicable state legislation, applicable state regulations, local agencies and regulations, federal agencies and regulations, information sources, ...
  	Citation × Citation Citation Abstract Copy Title: Colorado geothermal institutional handbook: a user's guide of agencies regulations, permits, and aids for geothermal development Author: Coe, B.A. Year: 1980 The following are included: principal state agencies, applicable state legislation, applicable state regulations, local agencies and regulations, federal agencies and regulations, information sources, and agencies and individuals. (MHR); DOE/ID/12018-3; Alternative title: Regulation of geothermal energy development in Colorado Title: Colorado geothermal institutional handbook: a user's guide of agencies regulations, permits, and aids for geothermal development Author: Coe, B.A. Year: 1980 The following are included: principal state agencies, applicable state legislation, applicable state regulations, local agencies and regulations, federal agencies and regulations, information sources, and agencies and individuals. (MHR); DOE/ID/12018-3; Alternative title: Regulation of geothermal energy development in Colorado Close

• 2. [Image] Oregon Administrative Rules State of Oregon Department of Geology and Mineral Industries, Chapter 632 , Division 20, Geothermal Regulations

  	This document is a collection of the Geothermal Regulations for the State of Oregon
  	Citation × Citation Citation Abstract Copy Title: Oregon Administrative Rules State of Oregon Department of Geology and Mineral Industries, Chapter 632 , Division 20, Geothermal Regulations Author: State of Oregon Year: 1995 This document is a collection of the Geothermal Regulations for the State of Oregon Title: Oregon Administrative Rules State of Oregon Department of Geology and Mineral Industries, Chapter 632 , Division 20, Geothermal Regulations Author: State of Oregon Year: 1995 This document is a collection of the Geothermal Regulations for the State of Oregon Close

• 3. [Image] Regulations on Leasing of Geothermal Resources and Drilling for Geothermal Resources in Hawaii

  	This document contains the many different aspects to consider when dealing with the regulations on leasing geothermal resources and drilling in the state of Hawaii
  	Citation × Citation Citation Abstract Copy Title: Regulations on Leasing of Geothermal Resources and Drilling for Geothermal Resources in Hawaii Author: Department of Land and Natural Resources Year: 1978 This document contains the many different aspects to consider when dealing with the regulations on leasing geothermal resources and drilling in the state of Hawaii Title: Regulations on Leasing of Geothermal Resources and Drilling for Geothermal Resources in Hawaii Author: Department of Land and Natural Resources Year: 1978 This document contains the many different aspects to consider when dealing with the regulations on leasing geothermal resources and drilling in the state of Hawaii Close

• 4. [Image] Montana Geothermal Handbook: A Guide to Agencies, Regulations, Permits and Financial Aids for Geothermal Development

  	The handbook is divided into three parts: a list of the permits required for various thermal projects, and an estimate of time needed to obtain them; a brief discussion of the statutes and regulations ...
  	Citation × Citation Citation Abstract Copy Title: Montana Geothermal Handbook: A Guide to Agencies, Regulations, Permits and Financial Aids for Geothermal Development Author: Perlmutter, S. Year: 1980 The handbook is divided into three parts: a list of the permits required for various thermal projects, and an estimate of time needed to obtain them; a brief discussion of the statutes and regulations referred to in Part 1; this information was gathered in a survey of state and federal regulations, as well as in conversations with numerous state and federal officials; and a description of the state and federal grant and loan funding available to a prospective geothermal developer. The names and addresses of the relevant state and federal agencies and legal citations are listed in appendices Title: Montana Geothermal Handbook: A Guide to Agencies, Regulations, Permits and Financial Aids for Geothermal Development Author: Perlmutter, S. Year: 1980 The handbook is divided into three parts: a list of the permits required for various thermal projects, and an estimate of time needed to obtain them; a brief discussion of the statutes and regulations referred to in Part 1; this information was gathered in a survey of state and federal regulations, as well as in conversations with numerous state and federal officials; and a description of the state and federal grant and loan funding available to a prospective geothermal developer. The names and addresses of the relevant state and federal agencies and legal citations are listed in appendices Close

• 5. [Image] Geothermal Steam Act of 1970 and Regulations on the Leasing of Geothermal Resources

  	The Geothermal Steam Act and the implementing Regulations printed here governed most aspects of the leasing of Federal lands for geothermal exploration and development for many years. They are of great ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Steam Act of 1970 and Regulations on the Leasing of Geothermal Resources Author: 91st Congress, S.368 Year: 1975 The Geothermal Steam Act and the implementing Regulations printed here governed most aspects of the leasing of Federal lands for geothermal exploration and development for many years. They are of great historical interest. Interesting details include: limits on leased acreage per person or firm, distinctions between competitive and noncompetitive leases, rules for bonus auctions, rents, and production royalties, diligence requirements, and distribution of royalties between the Government and the states. Note that most of what was laid out here prevailed until relatively large revisions in the omnibus Energy Bill of 2005. (DJE 2005) Title: Geothermal Steam Act of 1970 and Regulations on the Leasing of Geothermal Resources Author: 91st Congress, S.368 Year: 1975 The Geothermal Steam Act and the implementing Regulations printed here governed most aspects of the leasing of Federal lands for geothermal exploration and development for many years. They are of great historical interest. Interesting details include: limits on leased acreage per person or firm, distinctions between competitive and noncompetitive leases, rules for bonus auctions, rents, and production royalties, diligence requirements, and distribution of royalties between the Government and the states. Note that most of what was laid out here prevailed until relatively large revisions in the omnibus Energy Bill of 2005. (DJE 2005) Close

• 6. [Image] Arizona geothermal institutional handbook: Arizona geothermal commercialization planning team, January 1-December 31, 1979

  	The purpose of this handbook is to assist in understanding the various procedures and requirements necessary for the development of geothermal energy in the State of Arizona. It contains the names of key ...
  	Citation × Citation Citation Abstract Copy Title: Arizona geothermal institutional handbook: Arizona geothermal commercialization planning team, January 1-December 31, 1979 Author: Malysa, L. Year: 1980 The purpose of this handbook is to assist in understanding the various procedures and requirements necessary for the development of geothermal energy in the State of Arizona. It contains the names of key persons and agencies who are directly or indirectly involved in the institutional process. A detailed assessment of all agencies and the role they play in geothermal energy development is provided. The handbook is divided into four sections: State and Local rules and regulations, the Federal rules and regulations, references, and a technical bibliography. (MHR); DOE/ID/12015-2 Title: Arizona geothermal institutional handbook: Arizona geothermal commercialization planning team, January 1-December 31, 1979 Author: Malysa, L. Year: 1980 The purpose of this handbook is to assist in understanding the various procedures and requirements necessary for the development of geothermal energy in the State of Arizona. It contains the names of key persons and agencies who are directly or indirectly involved in the institutional process. A detailed assessment of all agencies and the role they play in geothermal energy development is provided. The handbook is divided into four sections: State and Local rules and regulations, the Federal rules and regulations, references, and a technical bibliography. (MHR); DOE/ID/12015-2 Close

• 7. [Image] Geothermal Institutional Handbook for the State of Wyoming: A User's Guide of Agencies Regulations, Permits and Aids for Geothermal Development

  	The agencies involved in geothermal development are listed and individually described. A summary of existing geothermal resource laws and their statute numbers are given followed by a discussion on the ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Institutional Handbook for the State of Wyoming: A User's Guide of Agencies Regulations, Permits and Aids for Geothermal Development Author: Aspinwall, C. Year: 1980 The agencies involved in geothermal development are listed and individually described. A summary of existing geothermal resource laws and their statute numbers are given followed by a discussion on the problems are tabulated. Some step-by-step instructions for determining what permits are necessary for developing a specific geothermal resource are given. A list of selected references and a list of additional resources for geothermal information and referral are included (MHR) Title: Geothermal Institutional Handbook for the State of Wyoming: A User's Guide of Agencies Regulations, Permits and Aids for Geothermal Development Author: Aspinwall, C. Year: 1980 The agencies involved in geothermal development are listed and individually described. A summary of existing geothermal resource laws and their statute numbers are given followed by a discussion on the problems are tabulated. Some step-by-step instructions for determining what permits are necessary for developing a specific geothermal resource are given. A list of selected references and a list of additional resources for geothermal information and referral are included (MHR) Close

• 8. [Image] Restrictions on snowmobile riding in Crater Lake National Park: final report

  	ill., col. map; Report title; Includes bibliographical references (p. R-1-R-6) pages
  	Citation × Citation Citation Abstract Copy Title: Restrictions on snowmobile riding in Crater Lake National Park: final report Author: Research Triangle Institute Year: 2001, 2010 ill., col. map; Report title; Includes bibliographical references (p. R-1-R-6) pages Title: Restrictions on snowmobile riding in Crater Lake National Park: final report Author: Research Triangle Institute Year: 2001, 2010 ill., col. map; Report title; Includes bibliographical references (p. R-1-R-6) pages Close

• 9. [Image] Guidelines to the Preparation of Environmental Reports for Geothermal Development Projects

  	The US Energy Research and Development Administration (ERDA) through its Division of Geothermal Energy (DGE) is the federal agency responsible for certain actions that pertain to the development of geothermal ...
  	Citation × Citation Citation Abstract Copy Title: Guidelines to the Preparation of Environmental Reports for Geothermal Development Projects Author: Energy Research and Development Administration, Division of Geothermal Energy Year: 1977 The US Energy Research and Development Administration (ERDA) through its Division of Geothermal Energy (DGE) is the federal agency responsible for certain actions that pertain to the development of geothermal resources. Such resources include (1) all products of geothermal processes, embracing indigenous steam, geopressured fluids, hot water, and brines; (2) steam and other gases, hot water and hot brines resulting from water, and natural gas or other fluids introduced into geothermal formations; (3) any by-products derived from geothermal resources, such as minerals or gases. By-products must either have a value less than 75% of the value of the geothermal resources from which they are derived or must not be of sufficient value alone to warrant extraction and production. in order to encourage the development of geothermal resources, ERDA conducts a program to assess those resources and to establish the technical, economic, and environmental acceptability of geothermal technologies. This program includes some proposed actions that could affect the environment. As a means of obtaining information essential to satisfying the requirements of NEAP and its own regulations (10 CFR Part 711), ERDA requests that certain participants in the agency's programmatic activities submit an environmental report. The report describes the proposed programmatic activities and considers the potential impacts of those activities with respect to the existing environment. This guidelines document has been developed to provide assistance to participants in the preparation of environmental reports about geothermal activities Title: Guidelines to the Preparation of Environmental Reports for Geothermal Development Projects Author: Energy Research and Development Administration, Division of Geothermal Energy Year: 1977 The US Energy Research and Development Administration (ERDA) through its Division of Geothermal Energy (DGE) is the federal agency responsible for certain actions that pertain to the development of geothermal resources. Such resources include (1) all products of geothermal processes, embracing indigenous steam, geopressured fluids, hot water, and brines; (2) steam and other gases, hot water and hot brines resulting from water, and natural gas or other fluids introduced into geothermal formations; (3) any by-products derived from geothermal resources, such as minerals or gases. By-products must either have a value less than 75% of the value of the geothermal resources from which they are derived or must not be of sufficient value alone to warrant extraction and production. in order to encourage the development of geothermal resources, ERDA conducts a program to assess those resources and to establish the technical, economic, and environmental acceptability of geothermal technologies. This program includes some proposed actions that could affect the environment. As a means of obtaining information essential to satisfying the requirements of NEAP and its own regulations (10 CFR Part 711), ERDA requests that certain participants in the agency's programmatic activities submit an environmental report. The report describes the proposed programmatic activities and considers the potential impacts of those activities with respect to the existing environment. This guidelines document has been developed to provide assistance to participants in the preparation of environmental reports about geothermal activities Close

• 10. [Image] Klamath River - View looking downstream at right abutment of Keno Regulating Dam

  	P12-200-2777A Klamath River - Klamath Project--Oregon. View looking downstream at right abutment of Keno Regulating Dam, which controls level of 18 miles of river and Lake Ewauna- Keno to Klamath Falls. ...
  	Citation × Citation Citation Abstract Copy Title: Klamath River - View looking downstream at right abutment of Keno Regulating Dam Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2777A Klamath River - Klamath Project--Oregon. View looking downstream at right abutment of Keno Regulating Dam, which controls level of 18 miles of river and Lake Ewauna- Keno to Klamath Falls. Dam is opened to full capacity. Flow is about 8200 cfs.; January 26, 1965; Bureau of Reclamation photo by C. D. Lawrence Title: Klamath River - View looking downstream at right abutment of Keno Regulating Dam Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2777A Klamath River - Klamath Project--Oregon. View looking downstream at right abutment of Keno Regulating Dam, which controls level of 18 miles of river and Lake Ewauna- Keno to Klamath Falls. Dam is opened to full capacity. Flow is about 8200 cfs.; January 26, 1965; Bureau of Reclamation photo by C. D. Lawrence Close

• 11. [Image] Klamath River - View of Klamath River Channel immediately downstream from Keno Regulating Dam

  	P12-200-2779A Klamath River - Klamath Project--Oregon. View of Klamath River Channel immediately downstream from Keno Regulating Dam, showing relatively flat grade between upper and lower rock reef sections. ...
  	Citation × Citation Citation Abstract Copy Title: Klamath River - View of Klamath River Channel immediately downstream from Keno Regulating Dam Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2779A Klamath River - Klamath Project--Oregon. View of Klamath River Channel immediately downstream from Keno Regulating Dam, showing relatively flat grade between upper and lower rock reef sections. Pacific Power & Light Company plans to excavate deeper channel along left side; January 26, 1965; Bureau of Reclamation photo by C. D. Lawrence Title: Klamath River - View of Klamath River Channel immediately downstream from Keno Regulating Dam Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2779A Klamath River - Klamath Project--Oregon. View of Klamath River Channel immediately downstream from Keno Regulating Dam, showing relatively flat grade between upper and lower rock reef sections. Pacific Power & Light Company plans to excavate deeper channel along left side; January 26, 1965; Bureau of Reclamation photo by C. D. Lawrence Close

• 12. [Image] Klamath River - View of Klamath River upstream from Keno Regulating Dam

  	P12-200-2780A Klamath River - Klamath Project--Oregon. View of Klamath River upstream from Keno Regulating Dam, showing noticeable riffle in water surface at narrow section near boom anchor cribs which ...
  	Citation × Citation Citation Abstract Copy Title: Klamath River - View of Klamath River upstream from Keno Regulating Dam Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2780A Klamath River - Klamath Project--Oregon. View of Klamath River upstream from Keno Regulating Dam, showing noticeable riffle in water surface at narrow section near boom anchor cribs which illustrates accelerated flow over upper reef; January 26, 1965; Bureau of Reclamation photo by C. D. Lawrence Title: Klamath River - View of Klamath River upstream from Keno Regulating Dam Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2780A Klamath River - Klamath Project--Oregon. View of Klamath River upstream from Keno Regulating Dam, showing noticeable riffle in water surface at narrow section near boom anchor cribs which illustrates accelerated flow over upper reef; January 26, 1965; Bureau of Reclamation photo by C. D. Lawrence Close

• 13. [Image] Klamath River - View from existing Keno regulating dam

  	P12-200-2793A Klamath River - Klamath Project--Oregon. View from existing Keno regulating dam showing M-K Co. dragline removing blasted rock from by-pass channel. Equipment at right is on old spoil pile, ...
  	Citation × Citation Citation Abstract Copy Title: Klamath River - View from existing Keno regulating dam Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2793A Klamath River - Klamath Project--Oregon. View from existing Keno regulating dam showing M-K Co. dragline removing blasted rock from by-pass channel. Equipment at right is on old spoil pile, from previous river channel excavation now being used for operating base and access road; March 3, 1965; Bureau of Reclamation photo by C. D. Lawrence Title: Klamath River - View from existing Keno regulating dam Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2793A Klamath River - Klamath Project--Oregon. View from existing Keno regulating dam showing M-K Co. dragline removing blasted rock from by-pass channel. Equipment at right is on old spoil pile, from previous river channel excavation now being used for operating base and access road; March 3, 1965; Bureau of Reclamation photo by C. D. Lawrence Close

• 14. [Image] Environmental assessment for the proposed special regulations designating snowmobile routes in Crater Lake National Park, Oregon

  	Citation × Citation Citation Abstract Copy Title: Environmental assessment for the proposed special regulations designating snowmobile routes in Crater Lake National Park, Oregon Author: Rutter, John A. Year: 1975, 2010 Title: Environmental assessment for the proposed special regulations designating snowmobile routes in Crater Lake National Park, Oregon Author: Rutter, John A. Year: 1975, 2010 Close

• 15. [Image] State Government Workshop on Barriers and Incentives of Geothermal Energy Resources. Quarterly Report, January 15-April 30, 1978

  	The Geothermal Policy Project activities are discussed in the areas of selection of project states, development of project materials, and establishing contacts. Potential problem areas are identified and ...
  	Citation × Citation Citation Abstract Copy Title: State Government Workshop on Barriers and Incentives of Geothermal Energy Resources. Quarterly Report, January 15-April 30, 1978 Author: Harris, R.C. Year: 1978 The Geothermal Policy Project activities are discussed in the areas of selection of project states, development of project materials, and establishing contacts. Potential problem areas are identified and future plans are discussed including an assessment of prospects for future progress. (MHR) Title: State Government Workshop on Barriers and Incentives of Geothermal Energy Resources. Quarterly Report, January 15-April 30, 1978 Author: Harris, R.C. Year: 1978 The Geothermal Policy Project activities are discussed in the areas of selection of project states, development of project materials, and establishing contacts. Potential problem areas are identified and future plans are discussed including an assessment of prospects for future progress. (MHR) Close

• 16. [Image] Geothermal Resource Assessment, Kern River Canyon and Lake Isabella Area, Northeastern Kern County, California

  	A preliminary investigation was performed in northeastern Kern County in order to assess the low temperature geothermal resources. The objective was to develop an accurate inventory of the low temperature ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Resource Assessment, Kern River Canyon and Lake Isabella Area, Northeastern Kern County, California Author: International Engineering Company, Incorporated Year: 1984 A preliminary investigation was performed in northeastern Kern County in order to assess the low temperature geothermal resources. The objective was to develop an accurate inventory of the low temperature resources and to identify alternatives for the direct use of these resources. Emphasis was placed on six areas exhibiting thermal manifestations in the Lake Isabella area and Kern River Canyon. Other reports in this study will identify applications and examine legislative, social, economic, technical and environmental barriers to the development of these resources. This report addresses Task 1 and includes: identification of the areas, preliminary analyses of each resource, interviews with resource owners, an update on information of the springs and a preliminary evaluation of the exploitation potential Title: Geothermal Resource Assessment, Kern River Canyon and Lake Isabella Area, Northeastern Kern County, California Author: International Engineering Company, Incorporated Year: 1984 A preliminary investigation was performed in northeastern Kern County in order to assess the low temperature geothermal resources. The objective was to develop an accurate inventory of the low temperature resources and to identify alternatives for the direct use of these resources. Emphasis was placed on six areas exhibiting thermal manifestations in the Lake Isabella area and Kern River Canyon. Other reports in this study will identify applications and examine legislative, social, economic, technical and environmental barriers to the development of these resources. This report addresses Task 1 and includes: identification of the areas, preliminary analyses of each resource, interviews with resource owners, an update on information of the springs and a preliminary evaluation of the exploitation potential Close

• 17. [Image] Geothermal Progress Monitor. Progress Report No. 1

  	Progress is reported on the following: electrical uses, direct-heat uses, drilling activities, leases, geothermal loan guarantee program, general activities, and legal, institutional, and regulatory activities ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Progress Monitor. Progress Report No. 1 Author: Assistant Secretary for Resource Applications, Division of Geothermal Resource Management Year: 1979 Progress is reported on the following: electrical uses, direct-heat uses, drilling activities, leases, geothermal loan guarantee program, general activities, and legal, institutional, and regulatory activities (MHR) Title: Geothermal Progress Monitor. Progress Report No. 1 Author: Assistant Secretary for Resource Applications, Division of Geothermal Resource Management Year: 1979 Progress is reported on the following: electrical uses, direct-heat uses, drilling activities, leases, geothermal loan guarantee program, general activities, and legal, institutional, and regulatory activities (MHR) Close

• 18. [Image] Geothermal Progress Monitor Report No. 5. Progress Report, June 1981

  	Updated information is presented on activities and progress in the areas of electric power plants, direct heat applications, deep well drilling, leasing of federal lands, legislative and regulatory actions, ...
  	Citation × Citation Citation Abstract Copy Title: Geothermal Progress Monitor Report No. 5. Progress Report, June 1981 Author: Assistant Secretary for Conservation and Renewable Energy, Division of Geothermal Energy Year: 1981 Updated information is presented on activities and progress in the areas of electric power plants, direct heat applications, deep well drilling, leasing of federal lands, legislative and regulatory actions, research and development, and others. Special attention is given in this report to 1980 highlights, particularly in the areas of electric and direct heat uses, drilling, and the Federal lands leasing program. This report also includes a summary of the DOE FY 1982 geothermal budget request to Congress Title: Geothermal Progress Monitor Report No. 5. Progress Report, June 1981 Author: Assistant Secretary for Conservation and Renewable Energy, Division of Geothermal Energy Year: 1981 Updated information is presented on activities and progress in the areas of electric power plants, direct heat applications, deep well drilling, leasing of federal lands, legislative and regulatory actions, research and development, and others. Special attention is given in this report to 1980 highlights, particularly in the areas of electric and direct heat uses, drilling, and the Federal lands leasing program. This report also includes a summary of the DOE FY 1982 geothermal budget request to Congress Close

• 19. [Image] Klamath River - Upstream face of Keno Regulation Dam from right bank

  	P12-200-2778A Klamath River - Klamath Project--Oregon. Note old timber construction and timber needles stacked on deck; January 26, 1965; Bureau of Reclamation photo by C. D. Lawrence
  	Citation × Citation Citation Abstract Copy Title: Klamath River - Upstream face of Keno Regulation Dam from right bank Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2778A Klamath River - Klamath Project--Oregon. Note old timber construction and timber needles stacked on deck; January 26, 1965; Bureau of Reclamation photo by C. D. Lawrence Title: Klamath River - Upstream face of Keno Regulation Dam from right bank Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1965, 2008, 2006 P12-200-2778A Klamath River - Klamath Project--Oregon. Note old timber construction and timber needles stacked on deck; January 26, 1965; Bureau of Reclamation photo by C. D. Lawrence Close

• 20. [Image] CLEAR LAKE WATERSHED

  	KP-2329-R2 - Klamath Project--CLEAR LAKE WATERSHED. Intermediate level on watershed during snowmelt period. Note numerous depressions tending to hold and regulate runoff; March 23, 1956; Photo by C. D. ...
  	Citation × Citation Citation Abstract Copy Title: CLEAR LAKE WATERSHED Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1956, 2007, 2006 KP-2329-R2 - Klamath Project--CLEAR LAKE WATERSHED. Intermediate level on watershed during snowmelt period. Note numerous depressions tending to hold and regulate runoff; March 23, 1956; Photo by C. D. Lawrence Title: CLEAR LAKE WATERSHED Author: United States. Bureau of Reclamation, Lawrence, C.D. Year: 1956, 2007, 2006 KP-2329-R2 - Klamath Project--CLEAR LAKE WATERSHED. Intermediate level on watershed during snowmelt period. Note numerous depressions tending to hold and regulate runoff; March 23, 1956; Photo by C. D. Lawrence Close