The report "Estimated Use of Water in the United States in 2005" by the U.S. Geological Survey (USGS) provides an overview of water withdrawals and uses in the United States for the year 2005. The total water withdrawals estimated for 2005 were 410 billion gallons per day (Bgal/d), slightly less than the 2000 estimate and about 5% less than the peak in 1980. Freshwater withdrawals accounted for 85% of the total, with fresh groundwater and surface-water withdrawals being the primary sources. Thermoelectric-power generation was the largest category of water use, followed by irrigation and public supply. California, Texas, Idaho, and Florida were the top four states in terms of water withdrawals. The report also highlights changes in water use over time, such as the stabilization or decrease in withdrawals for thermoelectric-power generation and irrigation since 1980, while public supply and domestic uses have steadily increased. The report includes detailed data on water withdrawals by category and state, as well as methods for estimating these values.The report "Estimated Use of Water in the United States in 2005" by the U.S. Geological Survey (USGS) provides an overview of water withdrawals and uses in the United States for the year 2005. The total water withdrawals estimated for 2005 were 410 billion gallons per day (Bgal/d), slightly less than the 2000 estimate and about 5% less than the peak in 1980. Freshwater withdrawals accounted for 85% of the total, with fresh groundwater and surface-water withdrawals being the primary sources. Thermoelectric-power generation was the largest category of water use, followed by irrigation and public supply. California, Texas, Idaho, and Florida were the top four states in terms of water withdrawals. The report also highlights changes in water use over time, such as the stabilization or decrease in withdrawals for thermoelectric-power generation and irrigation since 1980, while public supply and domestic uses have steadily increased. The report includes detailed data on water withdrawals by category and state, as well as methods for estimating these values.