Nancy L. Barber Dee L. Lurry 1990 <p>Since 1950, the U.S. Geological Survey (USGS) has estimated water use in the United States at 5-year intervals. &nbsp;Resulting reports tabulate water use by State and by water-resources region (major river basins) for a number of categories, such as irrigation, water supply, and industrial. &nbsp;In 1977, the USGS began the National Water-Use Information Program, designed to be a National source of accurate, consistent water-use data. &nbsp;The water-use project in Texas is part of the National Water-Use Information Program. &nbsp;The Texas District of the USGS compiles water-use information by county and by hydrologic unit using data collected by States agencies. &nbsp;A hydrologic unit is a geographic area representing part or all of a surface drainage basin, a combination of drainage basins, or a distinct hydrologic feature.</p> application/pdf 10.3133/wri894044 en U.S. Geological Survey Freshwater withdrawals in Texas, 1985 reports