Yakima Basin Natural Resources
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The Yakima River Basin, including its role as tributary to the Columbia River system, is the focus of this collection of research documents, agency reports and journal articles.
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Browsing Yakima Basin Natural Resources by Subject "Environmental monitoring"
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Item Concentrations and loads of suspended sediment and nutrients in surface water of the Yakima River basin, Washington, 1999-2000 : with an analysis of trends in concentrations(U.S. Geological Survey, 2003) Ebbert, James C.; Embrey, S.S.; Kelly, Janet A.This report contains the major findings of a 1999-2001 assessment of water quality in streams in the Yakima River Basin. It is one of a series of reports by the NAWQA (National Water-Quality Assessment) Program that present major findings on water resources in 51 major river basins and aquifer systems across the Nation. In these reports, water quality is assessed at many scales-from large rivers that drain many land uses to small agricultural catchments, and is discussed in terms of local, State, and regional issues. Conditions in the Yakima River Basin are compared to conditions found elsewhere and to selected national benchmarks, such as those for drinking-water quality and the protection of aquatic organisms. This report is intended for individuals working with water-resource issues in Federal, State, or local agencies, universities, public interest groups, or the private sector. The information will be useful in addressing a number of current issues, such as source-water protection, pesticide registration, human health, drinking water, hypoxia and excessive growth of algae and plants, the effects of agricultural land use on water quality, and monitoring and sampling strategies. This report is also for individuals who wish to know more about the quality of water resources in areas near where they live, and how that water quality compares to other areas across the Nation.Item Pesticides in surface water of the yakima river basin, washington, 1999–2000—their occurrence and an assessment of factors affecting concentrations and loads(Washington State Dept. of Ecology, 2002) Ebbert, James C.; Embrey, Sandra S.The occurrence, distribution, and transport of pesticides in surface water of the Yakima River Basin were assessed using data collected during 1999–2000 as part of the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program. Samples were collected at 34 sites located throughout the basin in August 1999 using a Lagrangian sampling design. Samples also were collected weekly and monthly from May 1999 through January 2000 at three of the sites. This report includes data for 47 pesticide compounds from the analysis of filtered water using ocadecyl (C-18) solid-phase extraction and gas chromatography/ mass spectrometry.Item USBR Columbia River pump exchange project: potential water quality impacts on the lower Yakima River(Washington State Dept. of Ecology, 2001-01) Carroll, Jim; Joy, JoePoor upstream water quality was concluded to be the foremost determinant of water quality conditions in the last 47 miles of the lower Yakima River evaluated in this study. Changes in operational flows at Chandler Canal cannot overcome the water quality degradation occurring upstream. The QUAL2E model mainly predicted some dilution effects on water quality parameters due to increased water volumes associated with the operational changes. Reduced settling of chlorophyll a and total suspended solids was also predicted due to increased velocities of flows. These effects were especially apparent in the Prosser Dam to Chandler Return reach. The proposed operational change at Columbia Canal diversion is predicted to have no noticeable impact on water quality conditions downstream of that diversion.