. An assessment of the forest and range land situation in the United States. Forests and forestry United States; Forest management United States; Rangelands United States. Figure Water Resource Regions. New England. 101-106 Middle Atlantic, 201-206 South Atlanllc-Gull. 301-309 Great Ukes, 401-408 Ohio, 501-507 Tennessee, 601-602 Upper Mississippi, 701-705 Lower Mississippi, 601-803 Sourls-Red-Rainy, 901 Missouri, 1001-1011 Artiansas-While-Red. 1101-1107 Texa»<3ull, 1201-120S Rio Grande. 1301-1305 Upper Colorado, 1401-1403 Lower Colorado, 1501-1503 Great Basin, 1601-1604 Columbia-North
. An assessment of the forest and range land situation in the United States. Forests and forestry United States; Forest management United States; Rangelands United States. Figure Water Resource Regions. New England. 101-106 Middle Atlantic, 201-206 South Atlanllc-Gull. 301-309 Great Ukes, 401-408 Ohio, 501-507 Tennessee, 601-602 Upper Mississippi, 701-705 Lower Mississippi, 601-803 Sourls-Red-Rainy, 901 Missouri, 1001-1011 Artiansas-While-Red. 1101-1107 Texa»<3ull, 1201-120S Rio Grande. 1301-1305 Upper Colorado, 1401-1403 Lower Colorado, 1501-1503 Great Basin, 1601-1604 Columbia-North Pacific, 1701- Callfomia-South Pacific, 1801 Alaska, 1901 Hawaii. 2001-2004 Caribbean, 2101-2102 1707 â 1807 Three categories of water use are generally recog- nized: (1) Withdrawal use which removes water from its natural course, uses it, and then returns it to a stream or underground source where it is avail- able for reuse; (2) consumptive use which represents that portion of the withdrawal consumed through evaporation, transportation, or by discharge to irre- trievable locations: and (3) instream uses such as boating, fishing, navigation, and hydroelectric power. The 1975 National Water Assessment prepared by the Water Resources Council contains estimates of withdrawals, consumptive use, and, to some extent, instream uses for 1975, with projections for 1985 and In this report, the projections for water demand beyond 2000 have been made by the Forest Service by extending the general trends shown in the pro- jections by the Water Resources Council. The ^U,S. Water Resources Council. The 1975 assessment of water and related land resources, op. cii. estimates for 1980 and 1990 are interpolated from the projections of the Council. Water Withdrawals by Major Use Freshwater withdrawals were approximately 339 billion gallons a day in 1975 (table ). Irrigation was the largest withdrawal use, accounting for 47 percent of the total (fig. ). Withdrawals for steam electr
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