print email comment close Water Resources Data of the United States (USGS) URL: http://waterdata.usgs.gov/nwis/ Description: This site provides "access to water-resources data collected at approximately 1.5 million sites in all 50 states, the District of Columbia, and Puerto Rico." Includes data for ground water, surface water, and water quality; for historical data, select the "Period of record" box on the site selection criteria search pages. Publisher: United States Geological Survey Library of Congress Subject Headings: Water-supply -- United States -- Databases LII Database Information: Record 16952 created by Dana Lubow on 05/28/2001 Last modification on 05/24/2004 Published: 05/28/2001   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/16952