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Show PART IV FUTURE DEMAND. Table 4l - Costs for project-type drainage of potentially irrigable lands developed for irrigation 1966-1980 1981-2000 2001-2020 Drainage costs Drainage costs Drainage costs ($1,000) ($1,000) ($1,000) Annual Annual Annual Total Land- operation, Landi/ operation, operation, Land-' Instal- Hydrologic maintenance, maintenance, Landl/ maintenance, lation Subregion (1,000 Instal- and re-_/ (1,000 Instal-/ and re- . (1,000 Instal- , and re- (1,000 costs and State acres) lation r./ placement-' acres) lation -' placement 3./ acres) lation?/ placement^/ acres) ($1,000) Green River Colorado 4.7 305.5 2.4 1.6 104.0 0.8 1.9 ^87.5 3.8 &-£ 897.O Utah 2.5 162.5 1.3 .3 19.5 .2 4.2 156.0 1.2 7.0 338.0 Wyoming 10.5 682.5 5.2 12.7 825.5 6.3 7.0 208.0 1.6 30.2 1,716.0 Subtotal 17.7 1,150.5 8.9 14.6 949.0 7.3 13.1 851.5 6.6 45.4 2,951.0 Upper Main Stem Colorado 18.1 633.5 9.1 19.2 672.0 9.6 16.1 563-5 8.0 53.4 1,869.0 Utah .3 10.5 .2 • 3 10.5 Subtotal 18.1 633.5 9.1 19.2 672.0 9.6 16.4 574.0 8.2 53.7 1,879-^ San Juan-Colorado Arizona Colorado 9.0 720.0 4.5 12.2 976.0 6.1 3.9 312.0 2.0 25.1 2,008.0 New Mexico 16.0 1,280.0 8.0 11.4 912.0 5.7 11.7 936.0 5.8 39.1 3,128.0 Utah 448.0 2.8 7.* 592.0 3.7 13.0 i,o4o.o Subtotal 25.0 2,000.0 12.5 29.2 2,336.0 14.6 23.0 1^840.0 11.5 77.2 6,176.0 Total 60.8 3,784.0 30.5 63.0 3,957.0 31.5 52.5 3,265-5 26.3 176.3 i/11,006.5 1/ Acreage needing drainage, comprising 30 percent of projected new land development. 2/ Based on per acre drainage costs of $65, $35, and $80, respectively, for Green River, Upper Main Stem, and San Bureau of Reclamation and Bureau of Indian Affairs project data. 3/ Based on average operation, maintenance, and replacement costs of $0.50 per acre of land requiring drainage, project data. Non-Federal costs paid by water users. k/ Cost to construct approximately 420 miles of drains at an average field cost of $26,000 per mile. Juan-Colorado Subregions. From From Bureau of Reclamation |