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OC' .,? J 11 (t ,"" Lake Mead Colorado Colorado H.-Lees Ferry Little Colorado River-Grand Canyon Virgin River Paria River Co lorado River Usable below River Little- Suspended Lees Ferry Cameron field Contents Evaporation ~ Hoover Runoff Runoff Suspended end of mo. Dam Sediment Sediment 1961 Acre-feet Tons Acre-feet Acre-feet Acre-feet Tons Acre-feet Acre-feet Inches Acre-feet Acre feet Oct. 725,000 5,820,000 429 510 769,000 6,018,300 5,5~O 18,086,000 7.9 77,700 539,200 Nov. Dec. 526,900 1,821,000 825 3,710 569,&:>0 1,779,&xJ 7,570 18,094,000 6.2 6~J400 516, ax> 381,200 790,300 "'7 6 403,500 333,600 12,570 18,023,000 3.2 31,900 486,400 1962 Jan. 342,600 688,900 930 93 370,700 171,.,150 10,370 17,901,000 5.2 50,600 481,600 Feb. 790,&:10 9,212,000 4,430 45,38) 836,200 12,310,000 29,550 18,249,000 3.7 36,500 497,100 Mar. 598,300 3,272,000 1,430 14,980 610,200 1,392,000 16,550 18,041,000 3.9 37,800 798,300 Apr. 2,327,000 20,667,000 847 71,130 2,lt12,000 34,952,000 32,410 19,357,000 4.2 42,000 901,800 May 3,585,000 8,384,000 253 1,200 3,708,000 23,454,000 8,780 21,920,000 6.9 75,300 886,900 June 2,856,000 3,652,000 378 0 2,817,000 5,612,000 3,430 23,696,000 7.5 86,700 799,200 July 1,709,000 2,667,000 257 0 1,ib4,OOO 3,257,000 3,830 24,548,000 12.7 ~55..2oo 824,100 Aug. 456,600 802,100 332 167 518,400 713,300 3,310 24,089,000 10.3 126,200 857,100 Sept. 312,l4oo 2,919,000 3,330 6,llO 320,700 2,072,000 7,340 23,624,000 8.0 96,900 715,800 Total 14 6ll 000 60 695 000 14 100 143 300 15,140 000 92 068 000 141 200 +" 696 000 70.7 "'8200 8.'04 000 Colorado Diversions between Colorado Diversions at Colorado Lake Colorado Havasu Parker and Blythe Imperial Dam Pilot Moha ve River Lake River River Gila River Knob Usable below Usable below Colo. R. Palo belctw All Gila River below Ret urn Contents Davis Contents Parker Indian Verde Cibola American Gravity Dome Yuma ~ end of mo. Dam end of mo. Dam Res. Canal Valley Canal Canal EI 1960. Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Oct. 1,379,000 505,700 554,300 411,400 30,760 60,390 426,800 340,100 63,810 290 59,000 0 Nov. 1,491,000 386,800 555,eoo 321,200 23,650 54,160 298,700 246,500 45,800 2&l 57,940 0 Dec. 1,682,000 256,700 541,600 201,800 20,130 38,510 201,900 168,200 30,470 241 63,390 15,930 , 1962 1,681,000 451,8:>0 278,400 61,060 99,420 Jan, 566,700 333,700 1l,830 49,710 328,100 34,580 379 Feb. 1,751,000 417,000 532,600 373,600 24,410 62,940 312,600 245,000 42,840 289 52,530 1l,210 Mar. 1,706,000 829,800 559,000 691,600 40,620 84,4lio 600,400 500,500 61,8J.o 341 70,280 133,400 Apr. 1,~,OOO 914,200 608,400 756,500 44,930 79,970 698,600 555,eoo 85,510 266 78,460 124,300 May 1,7 ,000 829,100 599,400 686,000 43,660 92,610 623,000 479,500 100,300 351 '78,690 4;:,1l0 June 1,623,000 898,500 591,000 77B,5oo 48,160 107, 300 649,200 515,000 103,300 201 68,800 88,760 July 1,4lto,000 1,002,000 579,200 881,900 57,540 117,400 755,900 583,400 105,700 213 B3,150 115,400 Aug. 1,36B,000 911,8:>0 577,900 821,000 59,140 113,300 726,200 569,700 107,200 313 B3,740 101,400 Sept. 1,34B,000 725,000 567,600 644,500 50,740 95,230 592,300 469,200 88,910 248 84,340 12,560 Total -2,000 B,12B,ooo .1 -2,900 6,902,000 455,600 956,000 6,214,000 4,951,000 871,800 3,410 841,400 747,;00 UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY COLORADO RIVER AND TRIBUTARIES IN WWER BASIN Annual Summary for Water Year ending Sept. 30, 1962 /E)4, .: vVr'h \/ , PROVISIONAL RECORDS !/ Lake Mead evaporation computed by mass-transfer method, Figures of acre-feet determined from surface area oC lake corresponding to average water surface elevation during month. E!. Includes Yuma Main Canal Wasteway and Reservation Canal Main Drain No.4. Sf Includes Claw through wasteway an~ powerplant returned to Colorado River. * Corrected figure. DOUGLAS D. LEWIS, District Engineer Tucson, Arizona October 11, 1962