The development and evaluation of a benthic index of biological integrity for the Cedar River Watershed, Washington
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Water-Resources Investigations Report↗
Geology topics
Dorene E. MacCoy
Publications and source records attributed to Dorene E. MacCoy.
Organic Compounds and Trace Elements in Freshwater Streambed Sediment and Fish from the Puget Sound Basin
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Fact Sheet↗
Water quality assessment of the Sacramento River Basin, California: Environmental setting and study design
This report describes the environmental setting and investigative activities of the Sacramento River Basin study unit of the National Water-Quality Assessment Program. The Sacramento River Basin is one of 60 study units located throughout the United States that has been scheduled for study as part of the National Water-Quality Assessment Program. The Sacramento River Basin is the most important source of freshwater in California. Water quality studies in the Sacramento River Basin study unit focus on the Sacramento Valley because it is here that the principal uses of water and potential impacts on water quality occur. Investigative activities include a network of surface water sites, where water chemistry and aquatic biological sampling are done, and a variety of ground water studies. In addition, investigations of the cycling and distribution of volatile organic compounds in the urban environment and the distribution of total and methyl mercury in the Sacramento River and tributaries will be completed.
California↗
Dissolved pesticide data for the San Joaquin River at Vernalis and the Sacramento River at Sacramento, California, 1991-94
Water samples were collected from sites on the San Joaquin and Sacramento Rivers, California and were analyzed for dissolved organic pesticides. This data collection and analysis are a part of an ongoing project by the U.S. Geological Survey Toxic Contaminants Hydrology program to determine the fate and transport of organic pesticides that enter the San Francisco Bay Estuary. Concentrations of selected pesticides were measured in filtered water samples using solid-phase extraction and gas chromatograph-mass spectrometry at the U.S. Geological Survey organic chemistry laboratory in Sacramento.
California↗