The US Geological Survey, in cooperation with the Maine Geological Survey and the Maine Department of Human Services compiles state-wide water-use information. USGS compiles the data from hundreds of thousands of sites to produce water-use information aggregated up to the county, state, and national levels. Every five years, data at the state level are entered into a national water-use data system and are published in a national circular.

Water withdrawals are estimated in the following categories: public water supply, domestic, industrial, irrigation, livestock, commercial, thermoelectric and mining. Withdrawals are broken out by surface water and ground water. All estimates are annual averages in millions of gallons per day.

Detailed water-use information is available on our web site at: http://water.usgs.gov/public/watuse