Appendix table 7—Total freshwater withdrawals in the United States, specified years, 1960-85, by region and water source, 
with projection of consumption to 2040 
Projections 
Region and water Source 1960 1965 1970 1975 1980 1985 2000 2010 2020 2030 2040 
Million gallons per day 
North! 
Ground water 5,625 7,130 8,750 8,920 9,930 9,395 12,060 13,840 15,670 17,225 18,365 
Surface water 70,735 92,000 107,355 106,975 110,050 97,785 117,110 130,450 143,600 156,350 — 168,450 
wastewater 80 125 130 155 190 105 250 310 25 B15 415 
Total 76,440 99,255 116,235 116,050 120,170 107,285 129,420 144,600 159,595 173,950 187,230 
South? 
Ground water 15,570 21,820 19,165 23,650 24,040 24,520 25,795 28,280 30,790 32,830 34,390 
Surface water 34,635 42,765 57,415 68,265 83,295 70,440 = 82,360 = 91,450 100,400 = =109,050 117,300 
Wastewater 30 5 20 B 70 175 100 110 100 105 105 
Total 50,235 64,590 76,600 91,980 107,405 95,155 108,255 119,840 131,290 141,985 151,795 
Rocky Mountain’ 
Ground water 12,690 15,920 18,675 27,920 31,140 29,190 27,515 29,220 30,890 32,125 33,120 
Surface water 36,420 47,420 52,740 53,380 59,745 57,520 = 61,475 66,320. 71,075 75,100 8,850 
Wastewater 90 125 170 155 35 55 70 75 65 60 60 
Total 49,200 63,465 = 71,585 81,454 90,920 86,765 89,060 95,615 102,030 107,285 — 112,030 
Pacific Coast? 
Ground water 13,400 15,930 21,130 22,430 24,150 20,790 22,430 24,560 26,720 28,410 29,625 
Surface water 27,545 28,975 32,510 34,410 36,260 =33,450 = 35,815 = 38,700 = 41,525 43,880 46,000 
Wastewater 430 385 200 170 175 260 165 165 135 130 120 
Total 41,375 45,290 = 53,840 57,010 60,585 54,500 58,410 63,425 68,380 72,420 75,745 
All regions 
Ground watear 46,285 60,800 67,720 82,920 89,260 83,800 = 87,800 = 95,900 104,070 110,590 115,500 
Surface water 169,335 211,160 250,020 263,030 =289,350 =-259,210 = 296,760 = 326,920 356,590 384,380 410,600 
Wastewater 630 640 520 540 470 600 590 660 620 670 700 
Total withdrawals 346,600 379,000 461,300 494,800 526,600 
216,200 
272,400 
318,300 
343,700 385,200 
423,600 
Note: Data may not add to totals because of rounding. 
'Includes the Northeast and North Central. 
*Includes the Southeast and South Central. 
*Includes the Great Plains. 
‘Includes Alaska and Hawaii. 
Source: Data for 1960-85 from U.S. Geological Survey circulars. except for 1985 data for irrigation. These are from the Soil Conservation Service, modified 
by additional nonagricultural irrigation use. Projections are Forest Service estimates based upon trends in the historial data. 
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