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Water quality -- Standards

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...
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...