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Regional Stream Quality Assessment


In 2013, the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Project of the National Water Quality Program launched a new type of study: the Regional Stream Quality Assessments (RSQA). The goals of the RSQA are to characterize water-quality stressors—contaminants, nutrients, sediment, and habitat—and ecological conditions in streams at regional scales and to determine the effects of these stressors on aquatic organisms. The studies include intensive sampling of stressors at approximately 100 wadeable streams, toxicity testing, and ecological surveys of algae, invertebrates, and fish. Sampling is done during spring and summer targeting the period of highest agricultural and urban chemical use. Statistical analyses [...]

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Thomas E Burley

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  • National Water-Quality Assessment Project

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