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Water quality -- Standards

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View Resource Water Quality Standards Inventory Database

The Water Quality Standards Inventory is provided by the Information Center for the Environment, a cooperative effort of environmental scientists at the University of California, Davis. The GIS-based inventory of water quality standards consists of water quality objectives and beneficial uses established by each regional board for California surface waters. Users can browse by water quality...

http://www.ice.ucdavis.edu/wqsid/
View Resource USGS National Water-Quality Assessment Program

Since its inception in 1991, the USGS National Water-Quality Assessment (NAWQA) program has been collecting and analyzing data about more than 50 major river basins and aquifers across the United States. The core mission is "to develop long-term consistent and comparable information on streams, ground water, and aquatic ecosystems to support sound management and policy decisions." Visitors can...

https://www.usgs.gov/mission-areas/water-resources/science/n...