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• 51. [Article] USDA report on water and related land resources : Lower Willamette River Basin, Oregon ; based on a cooperative survey by the State Water Resources Board of Oregon and the United States Department of Agriculture : report

  Citation × Citation Citation Abstract Copy Title: USDA report on water and related land resources : Lower Willamette River Basin, Oregon ; based on a cooperative survey by the State Water Resources Board of Oregon and the United States Department of Agriculture : report Author: USDA Field Advisory Committee, USDA Oregon River Basin Survey Party, United States. Forest Service, United States. Dept. of Agriculture. Economic Research Service, United States. Soil Conservation Service, Oregon. State Water Resources Board Title: USDA report on water and related land resources : Lower Willamette River Basin, Oregon ; based on a cooperative survey by the State Water Resources Board of Oregon and the United States Department of Agriculture : report Author: USDA Field Advisory Committee, USDA Oregon River Basin Survey Party, United States. Forest Service, United States. Dept. of Agriculture. Economic Research Service, United States. Soil Conservation Service, Oregon. State Water Resources Board Close

• 52. [Article] Miami River watershed assessment : final report

  The purpose of this watershed assessment is to inventory and characterize watershed conditions of the Miami River watershed and to provide recommendations that address the issues of water quality, fisheries ...

  Citation × Citation Citation Abstract Copy Title: Miami River watershed assessment : final report Author: E&S Environmental Chemistry, Inc., Sullivan, Timothy J., White, Shawn, Snyder, Kai U., Raymond, Richard B., Binder, Susan K., Bischoff, Joseph M. The purpose of this watershed assessment is to inventory and characterize watershed conditions of the Miami River watershed and to provide recommendations that address the issues of water quality, fisheries and fish habitat, and watershed hydrology. This assessment was conducted by reviewing and synthesizing existing data sets and some new data collected by the watershed council, following the guidelines outlined in the Oregon Watershed Enhancement Board (OWEB) watershed assessment manual (WPN 1999). Title: Miami River watershed assessment : final report Author: E&S Environmental Chemistry, Inc., Sullivan, Timothy J., White, Shawn, Snyder, Kai U., Raymond, Richard B., Binder, Susan K., Bischoff, Joseph M. The purpose of this watershed assessment is to inventory and characterize watershed conditions of the Miami River watershed and to provide recommendations that address the issues of water quality, fisheries and fish habitat, and watershed hydrology. This assessment was conducted by reviewing and synthesizing existing data sets and some new data collected by the watershed council, following the guidelines outlined in the Oregon Watershed Enhancement Board (OWEB) watershed assessment manual (WPN 1999). Close

• 53. [Article] Restoration project photo from the Lower North Umpqua Watershed

  Photo was taken in the Lower North Umpqua Watershed

  Citation × Citation Citation Abstract Copy Title: Restoration project photo from the Lower North Umpqua Watershed Author: Partnership for the Umpqua Rivers Photo was taken in the Lower North Umpqua Watershed Title: Restoration project photo from the Lower North Umpqua Watershed Author: Partnership for the Umpqua Rivers Photo was taken in the Lower North Umpqua Watershed Close

• 54. [Article] Scenic photo from Olalla Creek-Lookingglass Creek Watershed

  Photo was taken on the Olalla Creek-Lookingglass Creek Watershed

  Citation × Citation Citation Abstract Copy Title: Scenic photo from Olalla Creek-Lookingglass Creek Watershed Author: Partnership for the Umpqua Rivers Photo was taken on the Olalla Creek-Lookingglass Creek Watershed Title: Scenic photo from Olalla Creek-Lookingglass Creek Watershed Author: Partnership for the Umpqua Rivers Photo was taken on the Olalla Creek-Lookingglass Creek Watershed Close

• 55. [Article] USDA report on water and related land resources : Hood Drainage Basin, Oregon : based on a cooperative survey by the State Water Resources Board of Oregon and the United States Department of Agriculture : report

  Citation × Citation Citation Abstract Copy Title: USDA report on water and related land resources : Hood Drainage Basin, Oregon : based on a cooperative survey by the State Water Resources Board of Oregon and the United States Department of Agriculture : report Author: USDA Field Advisory Committee, USDA Oregon River Basin Survey Party, United States. Forest Service, United States. Dept. of Agriculture. Economic Research Service, United States. Soil Conservation Service, Oregon. State Water Resources Board Title: USDA report on water and related land resources : Hood Drainage Basin, Oregon : based on a cooperative survey by the State Water Resources Board of Oregon and the United States Department of Agriculture : report Author: USDA Field Advisory Committee, USDA Oregon River Basin Survey Party, United States. Forest Service, United States. Dept. of Agriculture. Economic Research Service, United States. Soil Conservation Service, Oregon. State Water Resources Board Close

• 56. [Article] Nehalem River watershed assessment

  Watershed assessment is a process for evaluating how well a watershed is working. The purpose of this assessment was to determine how natural and human-induced changes have impacted the sustainability ...

  Citation × Citation Citation Abstract Copy Title: Nehalem River watershed assessment Author: Maser, Jospeh, Johnson, Jill Watershed assessment is a process for evaluating how well a watershed is working. The purpose of this assessment was to determine how natural and human-induced changes have impacted the sustainability of salmon populations in the Nehalem River Watershed. Both historical and current information is included regarding the watershed’s ability to produce clean water and healthy salmon habitat. The assessment was prepared for the Upper and Lower Nehalem River Watershed Councils. It will be a baseline for developing and prioritizing potential restoration projects in terms of fish habitat. Geographic Information Systems (GIS) was used for much of the analysis and has been provided to the watershed councils. Title: Nehalem River watershed assessment Author: Maser, Jospeh, Johnson, Jill Watershed assessment is a process for evaluating how well a watershed is working. The purpose of this assessment was to determine how natural and human-induced changes have impacted the sustainability of salmon populations in the Nehalem River Watershed. Both historical and current information is included regarding the watershed’s ability to produce clean water and healthy salmon habitat. The assessment was prepared for the Upper and Lower Nehalem River Watershed Councils. It will be a baseline for developing and prioritizing potential restoration projects in terms of fish habitat. Geographic Information Systems (GIS) was used for much of the analysis and has been provided to the watershed councils. Close

• 57. [Article] Forest plant communities of the lower Cedar River watershed

  Citation × Citation Citation Abstract Copy Title: Forest plant communities of the lower Cedar River watershed Author: University of Washington, Scott, David R. M., Long, J., U.S. International Biological Program. Coniferous Forest Biome Title: Forest plant communities of the lower Cedar River watershed Author: University of Washington, Scott, David R. M., Long, J., U.S. International Biological Program. Coniferous Forest Biome Close

• 58. [Article] Kilchis watershed analysis

  This analysis was performed for two reasons: 1) the KWG needed a way to focus and synthesize the results of applied research on the condition and trends of natural resources, and the factors affecting ...

  Citation × Citation Citation Abstract Copy Title: Kilchis watershed analysis Author: Follansbee, Bruce, Stark, Ann This analysis was performed for two reasons: 1) the KWG needed a way to focus and synthesize the results of applied research on the condition and trends of natural resources, and the factors affecting those resources; and 2) a detailed watershed analysis was needed to supplement watershed assessments planned for the region. Title: Kilchis watershed analysis Author: Follansbee, Bruce, Stark, Ann This analysis was performed for two reasons: 1) the KWG needed a way to focus and synthesize the results of applied research on the condition and trends of natural resources, and the factors affecting those resources; and 2) a detailed watershed analysis was needed to supplement watershed assessments planned for the region. Close

• 59. [Article] Geology, structure, and tectonic history of the Tualatin Basin, northwestern Oregon

  The northwest-trending Neogene Tualatin basin in northwestern Oregon is a pull-apart basin with approximately 750 m of post-middle Miocene structural relief. Gently tilted uplands capped by Columbia River ...

  Citation × Citation Citation Abstract Copy Title: Geology, structure, and tectonic history of the Tualatin Basin, northwestern Oregon Author: Popowski, Thomas Allan The northwest-trending Neogene Tualatin basin in northwestern Oregon is a pull-apart basin with approximately 750 m of post-middle Miocene structural relief. Gently tilted uplands capped by Columbia River Basalt Group surround the synclinal basin on all sides. Integrated gravity, aeromagnetic, and seismic reflection data indicated that the basin is underlain by 3 to 4 km of sub-horizontal, upper lower Eocene to middle Miocene age sedimentary and volcanic rocks. Up to 300 m of Columbia River Basalt overlie these older strata, in turn overlain by up to 400 m of late Miocene to Pleistocene, dominantly fluvio-lacustrine sediments. Late middle Eocene strong oblique convergence across the continental margin generated regional northeast-trending fissures in the forearc through which the Tillamook Volcanics and basalt of Waverly Heights erupted. Sinistral strike-slip faults, including the proto-Gales Creek-Mt. Angel structural zone, segmented the forearc into discrete blocks which rotated clockwise independently. A right-step in the Gales Creek-Mt. Angel system generated northeast-directed folding and faulting adjacent to the restraining bend, deforming rocks as young as upper Tillamook Volcanics. Regional uplift culminated in a late Eocene unconformity which removed the arkosic Spencer Formation northeast of the Gales Creek-Mt. Angel system, prior to subsidence of the forearc and burial by late Eocene and Oligocene tuffaceous sedimentary strata. The distribution of middle Miocene Columbia River Basalt Group flows shows no evidence of a structural or topographic Tualatin basin at that time. The syncline initiated along the present southwestern margin of the basin in late Miocene time, in response to uplift of the Coast Range and Portland Hills anticlines to the southwest and northeast, respectively. A late Pliocene decrease in convergence and consequent relative increase in the oblique component of convergence reactivated the Gales Creek-Mt. Angel structural zone as a dextral shear zone. The right-step acted as a releasing bend, allowing extension, increased subsidence and normal faulting along the basin margins, and volcanism within the basin. Subsequent development of transverse folds and reverse faults, northwest-trending riedel shears, northeast-trending antithetic faults, and basin-marginal normal faults, is consistent with classification of the Tualatin basin as a pull-apart basin in a dextral wrench system. Title: Geology, structure, and tectonic history of the Tualatin Basin, northwestern Oregon Author: Popowski, Thomas Allan The northwest-trending Neogene Tualatin basin in northwestern Oregon is a pull-apart basin with approximately 750 m of post-middle Miocene structural relief. Gently tilted uplands capped by Columbia River Basalt Group surround the synclinal basin on all sides. Integrated gravity, aeromagnetic, and seismic reflection data indicated that the basin is underlain by 3 to 4 km of sub-horizontal, upper lower Eocene to middle Miocene age sedimentary and volcanic rocks. Up to 300 m of Columbia River Basalt overlie these older strata, in turn overlain by up to 400 m of late Miocene to Pleistocene, dominantly fluvio-lacustrine sediments. Late middle Eocene strong oblique convergence across the continental margin generated regional northeast-trending fissures in the forearc through which the Tillamook Volcanics and basalt of Waverly Heights erupted. Sinistral strike-slip faults, including the proto-Gales Creek-Mt. Angel structural zone, segmented the forearc into discrete blocks which rotated clockwise independently. A right-step in the Gales Creek-Mt. Angel system generated northeast-directed folding and faulting adjacent to the restraining bend, deforming rocks as young as upper Tillamook Volcanics. Regional uplift culminated in a late Eocene unconformity which removed the arkosic Spencer Formation northeast of the Gales Creek-Mt. Angel system, prior to subsidence of the forearc and burial by late Eocene and Oligocene tuffaceous sedimentary strata. The distribution of middle Miocene Columbia River Basalt Group flows shows no evidence of a structural or topographic Tualatin basin at that time. The syncline initiated along the present southwestern margin of the basin in late Miocene time, in response to uplift of the Coast Range and Portland Hills anticlines to the southwest and northeast, respectively. A late Pliocene decrease in convergence and consequent relative increase in the oblique component of convergence reactivated the Gales Creek-Mt. Angel structural zone as a dextral shear zone. The right-step acted as a releasing bend, allowing extension, increased subsidence and normal faulting along the basin margins, and volcanism within the basin. Subsequent development of transverse folds and reverse faults, northwest-trending riedel shears, northeast-trending antithetic faults, and basin-marginal normal faults, is consistent with classification of the Tualatin basin as a pull-apart basin in a dextral wrench system. Close

• 60. [Article] Clearcut logging and flow flows in Oregon coastal watersheds

  Citation × Citation Citation Abstract Copy Title: Clearcut logging and flow flows in Oregon coastal watersheds Author: Krygier, James T., Oregon State University. Forest Research Laboratory, Harr, R. Dennis (Robert Dennis), 1941- Title: Clearcut logging and flow flows in Oregon coastal watersheds Author: Krygier, James T., Oregon State University. Forest Research Laboratory, Harr, R. Dennis (Robert Dennis), 1941- Close