Reported water withdrawals in Oklahoma during 1982 were 1,270.64 million gallons per day. The withdrawals were about equally distributed between ground water and surface water with 46 percent being ground water and 54 percent being surface water. In general, the western counties rely on ground water and the eastern counties rely on surface water as their major sources of supply. The major withdrawal category water suppliers is not subdivided into its component-use categories such as domestic, commercial, and industrial. Estimates were made of the various uses to which water supplied by public suppliers is put. Water use in Oklahoma during 1982 was estimated to be 1,270.14 million gallons per day. This was a difference of less than 0.1 percent between estimated use and reported withdrawals. Oklahoma's major water use is agriculture including irrigation, which was 42 percent of the total water used during 1982. Many counties in Oklahoma, particularly those counties in the west, use more water for agricultural uses than the total of all other water uses in the county. Most of the exporting counties used surface water as their major source of supply. Several counties were also identified as major importers of water. The importing counties contained 50 percent of the State's population and water importation related more to population than to internal water-supply sources.