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15 Titles Match Your Query
Showing 1 through 15 of 15
1. Selected Elements and Organic Chemicals in Bed Sediment and Fish Tissue of the Tualatin River Basin, Oregon, 1992-96. [WRIR_99_4107]
Selected Elements and Organic Chemicals in Bed Sediment and Fish Tissue of the Tualatin River Basin, Oregon, 1992-96.Denny Road). Concentrations of total chlordane, dieldrin, and p,p'-DDE in sediment ...


2. Surface-Water-Quality Assessment of the Yakima River Basin, Washington [WRIR_98_4113]
Surface-water-quality conditions were assessed in the Yakima River Basin, which drains 6,155 square miles of mostly forested, range, and agricultural land in Washington. The Yakima River Basin is ...


3. Arsenic in Ground Water of the Willamette Basin, Oregon [WRIR_98_4205]
The spatial distribution of arsenic concentrations in ground water of the Willamette Basin was assessed by analyzing data from 728 historical and project sites. Concentrations of arsenic ranged from ...


4. Data Collection Methods, Quality Assurance Data, and Site Considerations for Total Dissolved Gas Monitoring, Lower Columbia River, Oregon and Washington, 2000. [WRIR_01_4005]
Excessive total dissolved gas pressure can cause gas-bubble trauma in fish downstream from dams on the Columbia River. In cooperation with the U.S. Army Corps of Engineers, the U.S. Geological Survey ...


5. Inorganic Chemistry of Water and Bed Sediment in Selected Tributaries of the South Umpqua River, Oregon, 1998 [WRIR_99_4196]
Ten sites on small South Umpqua River tributaries were sampled for inorganic constituents in water and streambed sediment. In aqueous samples, high concentrations (concentrations exceeding U.S. Environmental ...


6. Investigation of the Distribution of Organochlorine and Polycyclic Aromatic Hydrocarbon Compounds in the Lower Columbia River [WRIR_99_4051]
Organochlorine and polycyclic aromatic hydrocarbon compounds are of concern in the Columbia River Basin because of their adverse effects on fish and wildlife. Because these compounds can have important ...


7. Major-Ion, Nutrient, and Trace-Element Concentrations in the Steamboat Creek Basin [WIR_98_4105]
In September 1996, a water-quality study was done by the U.S. Geological Survey, in coordination with the U.S. Forest Service, in headwater streams of Steamboat Creek, a tributary to the North Umpqua ...


8. Modeling Water Quality in the Tualatin River, Oregon, 1991-1997 [WRIR_01_4062]
The calibration of a model of flow, temperature, and water quality in the Tualatin River, Oregon, originally calibrated for the summers of 1991 through 1993, was extended to the summers of 1991 through ...


9. Phosphorus and E.coli in the Fanno and Bronson Creek Subbasins of the Tualatin River Basin, Oregon, During Summer Low-Flow Conditions, 1996. [WRIR_004062]
As part of an ongoing cooperative study between the Unified Sewerage Agency of Washington County, Oregon, and the U.S. Geological Survey, phosphorus and Escherichia coli (E. coli) concentrations were ...


10. Sediment Oxygen Demand in the Tualatin River Basin, Oregon, 1992-96 [WRIR_97_4103]
Sediment oxygen demand (SOD) rates were measured by U.S. Geological Survey (USGS) personnel at 20 stream sites in the Tualatin River Basin from 1992 through 1996 as part of an investigation into the ...


11. The Effect of Calcium Magnesium Acetate (CMA) Deicing Material on the Water Quality of Bear Creek, Clackamas County, Oregon,1999 [WRIR_00-4092]
This study was done by the U.S. Geological Survey, in cooperation with the Oregon Department of Transportation (ODOT), to evaluate the effects of the highway deicing material, calcium magnesium acetate ...


12. Upper Klamath Lake Basin Nutrient-Loading Study-Assessment of Historic of Flows in the Williamson and Sprague Rivers [WRIR_98_4198]
The Williamson River Basin, located in south-central Oregon, has a drainage area of approximately 3,000 square miles. The Sprague River, which flows into the Williamson River Basin, has a drainage ...


13. WRIR 99-4036-Ground-Water and Water-Chemistry Data for the Willamette Basin, Oregon [WRIR_99_4036]
This report presents ground-water data collected and compiled as part of a study of the ground-water resources of the Willamette River Basin, Oregon. The report includes tabulated information and ...


14. Water Quality and Algal Conditions in the North Umpqua River Basin, Oregon, 1992-1995 [WRIR_98_4125]
This data came from a synoptic water-quality and algal investigation during July 1995 at 36 stream sites in a 1,350 square-mile area of the North Umpqua River Basin, Oregon. The study area includes ...


15. Distribution of Dissolved Pesticides and Other Water Quality Constituents in Small Streams, and their Relation to Land Use, Willamette River Basin, Oregon [WRIR_97_4268]
Water quality samples were collected at sites in 16 randomly selected agricultural and 4 urban subbasins as part of Phase III of the Willamette River Basin Water Quality Study in Oregon during 1996. ...


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