Water Use in the United States
Salt Lake City Canal intake, Provo River, Utah
Surface-water sources include streams and rivers, lakes and reservoirs, and oceans. For the purposes of the USGS water-use reports, surface water with less than 1,000 milligrams per liter (mg/L) of dissolved solids is considered freshwater, and the remainder is considered saline.
Surface-water resources are often evaluated by watershed. The most recent USGS water-use estimates by watershed are in Estimated Use of Water in the United States in 1995.
2010 Water Use
(source: Maupin, M.A., Kenny, J.F., Hutson, S.S., Lovelace, J.K., Barber, N.L., and Linsey, K.S., 2014, Estimated use of water in the United States in 2010: U.S. Geological Survey Circular 1405, 56 p., https://pubs.usgs.gov/circ/1405/.)