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The USGS monitors stream water quality in Wyoming and Montana in cooperation with State, County, local, and other Federal agencies. Water-quality data for these sites are available from the USGS National Water Information System Web Mapper application in the form of an interactive map.
The tables below contains links to the USGS National Water Information System Web Interface (NWISWeb) for each water-quality sampling site in Wyoming and Montana. Click on a site number to link to general site information. Click on the buttons to the right of the site name to link to data for the current water year, data for the previous water year, or to generate a user-customized retrieval.
**Please note that provisional data are included on NWISWeb that have not received Director's approval and as such are subject to revision. These data are released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from their authorized or unauthorized use.**
Below are data or web applications associated with this project.
Streams throughout the country are routinely sampled for their water quality. Water-quality data are available for active sites and historical sites from the USGS National Water Information System Web Interface (NWISWeb). NWISWeb has discrete water-quality sample data as well as continuous water-quality data.