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National Water Information System: Web Interface

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USGS Water Data for the Nation Help System

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Welcome to the NWIS-Web for the Arizona Water Science Center

The majority of USGS Gaging Stations are funded though a cooperative program between the USGS other interested agencies.
Follow this link for information on the Cooperative Water Program with the USGS.

Arizona Water Science Center Home Page
Colorado Basin River Forecast Center (CBRFC) - provided by the National Weather Service, AHPS. CBRFC on an interactive map.
Threatened and Endangered USGS Gaging Stations in Arizona

The following is an example of how to cite this website in a publication.

U.S. Geological Survey, 2001, National Water Information System data available on the World Wide Web (Water Data for the Nation), accessed [June 10, 2001], at URL [http://waterdata.usgs.gov/nwis/].

You would need to substitute the applicable items enclosed in brackets (remove the brackets too) for the date you accessed the data and URL you are referring to within Water Data for the Nation.

While the development team will take considerable effort to maintain the integrity of existing URLs, queries for specific data within Water Data for the Nation may not function in the future if the software or database is substantially changed.