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• 1. [Article] Review of Estimates of ground-water recharge, base flow, and stream reach gains and losses in the Willamette River Basin, Oregon

  1 p. Review produced for HC 441: Science Colloquium: Willamette River Environmental Health, Robert D. Clark Honors College, University of Oregon, Spring term, 2004.

  Citation × Citation Citation Abstract Copy Title: Review of Estimates of ground-water recharge, base flow, and stream reach gains and losses in the Willamette River Basin, Oregon Author: Gordon, Eleanor, Lee, Karl K., Risley, John C., Geological Survey (U.S.) Year: 2006, 2004 1 p. Review produced for HC 441: Science Colloquium: Willamette River Environmental Health, Robert D. Clark Honors College, University of Oregon, Spring term, 2004. Title: Review of Estimates of ground-water recharge, base flow, and stream reach gains and losses in the Willamette River Basin, Oregon Author: Gordon, Eleanor, Lee, Karl K., Risley, John C., Geological Survey (U.S.) Year: 2006, 2004 1 p. Review produced for HC 441: Science Colloquium: Willamette River Environmental Health, Robert D. Clark Honors College, University of Oregon, Spring term, 2004. Close

• 2. [Article] Selected elements and organic chemicals in bed sediment and fish tissue of the Tualatin River Basin, Oregon, 1992-96

  The U.S. Geological Survey (USGS) has worked cooperative with the Unified Sewerage Agency of Washington County (USA) since 1990 to assess water quality in the Tualatin River Basin. The objectives of this ...

  Citation × Citation Citation Abstract Copy Title: Selected elements and organic chemicals in bed sediment and fish tissue of the Tualatin River Basin, Oregon, 1992-96 Author: Bonn, Bernadine A., Washington County (Or.). Unified Sewerage Agency., Geological Survey (U.S.) The U.S. Geological Survey (USGS) has worked cooperative with the Unified Sewerage Agency of Washington County (USA) since 1990 to assess water quality in the Tualatin River Basin. The objectives of this study were to: assess the occurrence and magnitude of trace element and selected organic contaminants in streams of the Tualatin River Basin; compare contaminant levels found in Tualatin River Basin streams with published guidelines for the protection of aquatic life; place the contaminant levels found in the Tualatin River Basin streams in context, regionally and nationally, by comparing them with those found in the Willamette Basin and by the USGS National Water-Quality Assessment (NAWQA) Program; compare contaminant concentrations in bed sediment with those in fish tissue; and identify contaminant patterns that would help managers make decisions regarding future monitoring and the implementation of pollution prevention and abatement programs. Title: Selected elements and organic chemicals in bed sediment and fish tissue of the Tualatin River Basin, Oregon, 1992-96 Author: Bonn, Bernadine A., Washington County (Or.). Unified Sewerage Agency., Geological Survey (U.S.) The U.S. Geological Survey (USGS) has worked cooperative with the Unified Sewerage Agency of Washington County (USA) since 1990 to assess water quality in the Tualatin River Basin. The objectives of this study were to: assess the occurrence and magnitude of trace element and selected organic contaminants in streams of the Tualatin River Basin; compare contaminant levels found in Tualatin River Basin streams with published guidelines for the protection of aquatic life; place the contaminant levels found in the Tualatin River Basin streams in context, regionally and nationally, by comparing them with those found in the Willamette Basin and by the USGS National Water-Quality Assessment (NAWQA) Program; compare contaminant concentrations in bed sediment with those in fish tissue; and identify contaminant patterns that would help managers make decisions regarding future monitoring and the implementation of pollution prevention and abatement programs. Close

• 3. [Article] Major-ion, nutrient, and trace-element concentrations in the Steamboat Creek Basin, Oregon, 1996

  This report presents the concentrations of major ions, nutrients, and trace elements in water and bottom sediments collected in the four-tributaries during the low-flow condition of September 9-13, 1996. ...

  Citation × Citation Citation Abstract Copy Title: Major-ion, nutrient, and trace-element concentrations in the Steamboat Creek Basin, Oregon, 1996 Author: Rinella, Frank A., Douglas County (Or.), United States. Forest Service, Geological Survey (U.S.) This report presents the concentrations of major ions, nutrients, and trace elements in water and bottom sediments collected in the four-tributaries during the low-flow condition of September 9-13, 1996. Stream-water chemistry results are contrasted, and trace-element concentrations compared with U.S. Environmental Protection Agency chronic aquatic life toxicity criteria. Bottom -sediment trace-element results also are constrasted and compared with concentrations considered to be enriched in streams of the nearby Willamette River Basin and to interim Canadian threshold effect level (TEL) concentrations established for the protection of aquatic life. Title: Major-ion, nutrient, and trace-element concentrations in the Steamboat Creek Basin, Oregon, 1996 Author: Rinella, Frank A., Douglas County (Or.), United States. Forest Service, Geological Survey (U.S.) This report presents the concentrations of major ions, nutrients, and trace elements in water and bottom sediments collected in the four-tributaries during the low-flow condition of September 9-13, 1996. Stream-water chemistry results are contrasted, and trace-element concentrations compared with U.S. Environmental Protection Agency chronic aquatic life toxicity criteria. Bottom -sediment trace-element results also are constrasted and compared with concentrations considered to be enriched in streams of the nearby Willamette River Basin and to interim Canadian threshold effect level (TEL) concentrations established for the protection of aquatic life. Close

• 4. [Article] Statistical summaries of streamflow data in Oregon : Volume 2 Western Oregon

  Statistical summaries of streamflow data at 212 stream-gaging sites are presented in this report to aid in appraising the hydrology of river basins in Western Oregon. Records for 21 gaging stations were ...

  Citation × Citation Citation Abstract Copy Title: Statistical summaries of streamflow data in Oregon : Volume 2 Western Oregon Author: Oregon. Water Resources Dept., Miller, Suzanne J., Friday, John, Geological Survey (U.S.) Statistical summaries of streamflow data at 212 stream-gaging sites are presented in this report to aid in appraising the hydrology of river basins in Western Oregon. Records for 21 gaging stations were compiled into separate periods owing to changes in regulation during the period of data collection. The periods before and after regulation are presented for comparison. Title: Statistical summaries of streamflow data in Oregon : Volume 2 Western Oregon Author: Oregon. Water Resources Dept., Miller, Suzanne J., Friday, John, Geological Survey (U.S.) Statistical summaries of streamflow data at 212 stream-gaging sites are presented in this report to aid in appraising the hydrology of river basins in Western Oregon. Records for 21 gaging stations were compiled into separate periods owing to changes in regulation during the period of data collection. The periods before and after regulation are presented for comparison. Close

• 5. [Article] Statistical summaries of streamflow data in Oregon : Volume 1 Eastern Oregon

  Statistical summaries of streamfiow data at 123 stream-gaging sites are presented in this report to aid in appraising the hydrology of river basins in Eastern Oregon. Records for 13 gaging stations were ...

  Citation × Citation Citation Abstract Copy Title: Statistical summaries of streamflow data in Oregon : Volume 1 Eastern Oregon Author: Oregon. Water Resources Dept., Miller, Suzanne J., Friday, John, Geological Survey (U.S.) Statistical summaries of streamfiow data at 123 stream-gaging sites are presented in this report to aid in appraising the hydrology of river basins in Eastern Oregon. Records for 13 gaging stations were compiled into separate periods owing to changes in regulation during the period of data collection. The periods before and after regulation are presented for comparison. A brief station description is given describing the physical and operational features for each gaging station. Following the station description are tables of monthly and annual flow statistics, flood frequency data, low-flow and high-flow frequency data, and flow-duration information. Title: Statistical summaries of streamflow data in Oregon : Volume 1 Eastern Oregon Author: Oregon. Water Resources Dept., Miller, Suzanne J., Friday, John, Geological Survey (U.S.) Statistical summaries of streamfiow data at 123 stream-gaging sites are presented in this report to aid in appraising the hydrology of river basins in Eastern Oregon. Records for 13 gaging stations were compiled into separate periods owing to changes in regulation during the period of data collection. The periods before and after regulation are presented for comparison. A brief station description is given describing the physical and operational features for each gaging station. Following the station description are tables of monthly and annual flow statistics, flood frequency data, low-flow and high-flow frequency data, and flow-duration information. Close

• 6. [Article] Summary of information on aquatic biota and their habitats in the Willamette Basin, Oregon, through 1995

  This report reviews and summarizes available information on aquatic biological communities in the Willamette Basin through 1995. Specifically, the report describes (1) the distribution, abndance, and trends ...

  Citation × Citation Citation Abstract Copy Title: Summary of information on aquatic biota and their habitats in the Willamette Basin, Oregon, through 1995 Author: National Water-Quality Assessment Program (U.S.), Altman, Bob, Henson, Colleen M., Waite, Ian R., U.S. Fish and Wildlife Service, Geological Survey (U.S.) This report reviews and summarizes available information on aquatic biological communities in the Willamette Basin through 1995. Specifically, the report describes (1) the distribution, abndance, and trends of three taxonomic groups--algae, macroinvertebrates, and fish--and, to a lesser degree, other selected semi-aquatic taxa (i.e., taxa frequenting but not living wholly in water), including amphibians and reptiles, birds, and mammals, (2) the types of aquatic and riparian habitat that support and influence aquatic communities and their biotic constituents, (3) the natural and human-associated impacts on that habitat and associated biological communities, amd (4) the levels of enviroinmental contaminants to which biological communities and specific biota are exposed. The information in this report is intended to aid in the identification of data gaps relative to taxa and geographic areas, and to stimulate collaboration and increase coordination in present and future ecological research in the Willamette Basin. Title: Summary of information on aquatic biota and their habitats in the Willamette Basin, Oregon, through 1995 Author: National Water-Quality Assessment Program (U.S.), Altman, Bob, Henson, Colleen M., Waite, Ian R., U.S. Fish and Wildlife Service, Geological Survey (U.S.) This report reviews and summarizes available information on aquatic biological communities in the Willamette Basin through 1995. Specifically, the report describes (1) the distribution, abndance, and trends of three taxonomic groups--algae, macroinvertebrates, and fish--and, to a lesser degree, other selected semi-aquatic taxa (i.e., taxa frequenting but not living wholly in water), including amphibians and reptiles, birds, and mammals, (2) the types of aquatic and riparian habitat that support and influence aquatic communities and their biotic constituents, (3) the natural and human-associated impacts on that habitat and associated biological communities, amd (4) the levels of enviroinmental contaminants to which biological communities and specific biota are exposed. The information in this report is intended to aid in the identification of data gaps relative to taxa and geographic areas, and to stimulate collaboration and increase coordination in present and future ecological research in the Willamette Basin. Close

• 7. [Article] Quality of shallow ground water in alluvial aquifers of the Willamette Basin, Oregon, 1993-95

  The purposes of this report are to describe the quality of shallow ground water in alluvial aquifers of the Willamette Basin and to identify relationships between shallow ground-water quality and various ...

  Citation × Citation Citation Abstract Copy Title: Quality of shallow ground water in alluvial aquifers of the Willamette Basin, Oregon, 1993-95 Author: National Water-Quality Assessment Program (U.S.), Geological Survey (U.S.), Hinkle, Stephen R. The purposes of this report are to describe the quality of shallow ground water in alluvial aquifers of the Willamette Basin and to identify relationships between shallow ground-water quality and various natural and anthropogenic factors. Several natural and anthropogenic factors (soil characteristics, cumulative thickness of clay above open interval of well, surficial geology, and land use) were evaluated because of the potential for these factors to either control or be related to contaminant occurrence and spatial distribution. Spatial distributions of nitrite plus nitrite, phosphorous, pesticides and pesticide degradation products, volatile organic compounds (VOCs), trace elements (primarily arsenic, a trace element of local concern), and radon were evaluated for 1993-95. Ancillary chemical data--nitrite, chloride, tritium (H-3), and dissolved-oxygen (DO) concentrations--also are presented. Title: Quality of shallow ground water in alluvial aquifers of the Willamette Basin, Oregon, 1993-95 Author: National Water-Quality Assessment Program (U.S.), Geological Survey (U.S.), Hinkle, Stephen R. The purposes of this report are to describe the quality of shallow ground water in alluvial aquifers of the Willamette Basin and to identify relationships between shallow ground-water quality and various natural and anthropogenic factors. Several natural and anthropogenic factors (soil characteristics, cumulative thickness of clay above open interval of well, surficial geology, and land use) were evaluated because of the potential for these factors to either control or be related to contaminant occurrence and spatial distribution. Spatial distributions of nitrite plus nitrite, phosphorous, pesticides and pesticide degradation products, volatile organic compounds (VOCs), trace elements (primarily arsenic, a trace element of local concern), and radon were evaluated for 1993-95. Ancillary chemical data--nitrite, chloride, tritium (H-3), and dissolved-oxygen (DO) concentrations--also are presented. Close

• 8. [Article] Inorganic chemistry of water and bed sediment in selected tributaries of the South Umpqua River, Oregon, 1998

  This report presents results of an investigation of water and streambed-sediment quality in selected tributaries of the South Umpqua River. Concentrations of inorganic constituents in water (major and ...

  Citation × Citation Citation Abstract Copy Title: Inorganic chemistry of water and bed sediment in selected tributaries of the South Umpqua River, Oregon, 1998 Author: Hinkle, Stephen R., Geological Survey (U.S.) This report presents results of an investigation of water and streambed-sediment quality in selected tributaries of the South Umpqua River. Concentrations of inorganic constituents in water (major and minor ions, nutrients, and trace elements) and streambed sediment (primarily trace elements), along with standard field parameters, are tabulated for samples collected at 10 sites. Aqueous trace-element concentrations are compared with U.S. Environmental Protection Agency (USEPA) criterion continuous concentrations for the protection of aquatic life. Streambed-sediment trace-element concentrations are compared with Canadian sediment quality guidelines for the protection of aquatic life and, to provide a frame of reference, with previously collected streambed-sediment data from the Willamette Basin in western Oregon. Title: Inorganic chemistry of water and bed sediment in selected tributaries of the South Umpqua River, Oregon, 1998 Author: Hinkle, Stephen R., Geological Survey (U.S.) This report presents results of an investigation of water and streambed-sediment quality in selected tributaries of the South Umpqua River. Concentrations of inorganic constituents in water (major and minor ions, nutrients, and trace elements) and streambed sediment (primarily trace elements), along with standard field parameters, are tabulated for samples collected at 10 sites. Aqueous trace-element concentrations are compared with U.S. Environmental Protection Agency (USEPA) criterion continuous concentrations for the protection of aquatic life. Streambed-sediment trace-element concentrations are compared with Canadian sediment quality guidelines for the protection of aquatic life and, to provide a frame of reference, with previously collected streambed-sediment data from the Willamette Basin in western Oregon. Close

• 9. [Image] Forest conditions in the Cascade Range Forest Reserve, Oregon

  	Subject series H. Forestry 6
  	Citation × Citation Citation Abstract Copy Title: Forest conditions in the Cascade Range Forest Reserve, Oregon Author: Geological Survey (U.S.) Year: 1903, 2007 Subject series H. Forestry 6 Title: Forest conditions in the Cascade Range Forest Reserve, Oregon Author: Geological Survey (U.S.) Year: 1903, 2007 Subject series H. Forestry 6 Close