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o I' 1 :; fl4 UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY COLORADO RIVER AND TRIBUTARIES IN LOWER BASIN Annual Summary for Water Year ending Sept. 30, 1965 PROVISIONAL RECORDS , Lak~ Mead Little Colorado Colorado R.-Lees Ferry Paria Colorado River-Grand Canyon Virgin River Colorado River River River Little- Usable , below Suspended Lees Ferry Cameron field Contents Evaporation ~ Hoover Runoff Sediment Runoff Suspended end of mo. Dam Sediment I 1964 Acre-feet Tons Acre-feet Acre-feet Acre-feet Tons Acre-feet Acre-feet Inches Acre-feet Acre-feet Oct. 2~,500 47" 549 29",500 3,200 11,315,000 5.53 :>~,lOO (~b,500 Nov. 347,500 981 0 370,700 6,520 11,215,000 6.52 49,000 445,100 Dec. 403,600 2,120 0 416,100 8,710 11,136,000 5.72 43,400 469,200 1965 I Jan. 558,000 1,190 42,730 607,500 8,660 11,289,000 2.g6 19,980 489,300 Feb. 515,900 1,020 12,210 539,300 I 7,780 11,361,000 3.9/1 30,000 498,100 Mar. 556,200 916 14,940 567,900 7,700 11,151,000 3.12 23,600 7~600 Apr. -1,222,000 3,160 87,570 1,251,000 " 31,240 11,723,000 5.27 41,200 69 400 May 2,284,000 984 16,570 2,282,000 23,880 13,209,000 5.73 45,000 872, 00 June 2,326,000 408 0 2,282,000 9,160 14,8.02,000 1.0.6 60,400 785,500 July 121,100 918 21,798 724,400 3,200 14,660,000 1.54 66,200 814,8.00 Aug. 810,700 2,090 10,630 879,000 4,710 14,659,000 8.'19 77,500 817,000 Sept. 150,400 1 8'0 20:g70 766 Boo 6: "0 14_708000 0.70 86 000 6<;<;_200 Total 10,830,000 16,180 228,000 10,985,000 121,200 +3,085,000 11.8 585,100 7,917,000 , , I , Diversions between I Diversions at Lake Colorado HavaBu Colorado Parker and Blythe I Colorado Imperial Dam Colorado Pilot Mohave River Lake River River Oila River Knob Usable below Usable below Colo. R. Palo I below ; Gila River below Return All Contents Davis Contents Parker Indian Verde I Cibola American Gravity l?ome Yuma V end of mo. Dam end of mo. Dam Res, Canal Valley Canal Canal El 1964 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,~~1 ,000 501 , ~o 550, 00 395,000 32,~ 5,:,130 ~~;,wu 305,200 67,920 0 49,610 0 Nov. 1,484,000 366,&Jo 543,800 210,200 17,280 36,290 295,200 216,900 36,990 0 63,570 0 Dec. 1,588,000 354,700 539,300 249,400 17,880 33,37~ 260 ,200 193,900 42,030 I 0 62,260 0 1965 , Jan. 1,680,000 392,000 542,700 281,000 9,810 26,30q 271,100 222,600 27,2eo I 0 54,640 24,650 Feb. 1,683,000 500,300 517,500 418,600 30,100 57,69<1 350,700 278,Boo 37,710 I 5.6 49,220 20,600 Mar. l,663,poo &::14,300 535,100 634,400 44 ,oeo 72,400 551,300 452,800 71,260 I 6.5 54,730 u6,900 Apr. 1,713,000 652,100 550,600 582,000 35,140 47,300 566,400 466,700 68,870 263 61,830 130,000 May 1,788,000 804 , 100 599,400 597,100 39,000 74,910 550,900 412,500 109,400 I 3.0 81,240 0 June 1,721,000 861, 900 589,300 709,900 44,430 97,860 599,400 445,000 104,900 0 66,520 63,140 July 1,550,000 1,012,000 581,300 846,000 52,110 113,90d 726,500 574,700 112,500 0 58,160 149,300 Aug. 1,420,000 981,400 560,200 867,000 54,'110 106,000 147,200 602 , 600 107,300 0 58,290 112,600 Sept. 1,377,000 718,300 550,400 599,300 46,480 86,490 541,800 421 700 95 300 0 71,660 21,620 Total +36,000 7,956,000 +'+,.LOO 0, 50,000 423,900 &:l6,60~ 5,eEO,ooo '+,593,000 001,500 I 27" 731,700 090, toO y Lake Mead evaporation computed by mass-transfer method, Figures of acre-feet determined Crom surface area of lake corresponding to average water surface elevation during month. Includes Yuma Main Canal Wasteway and Reservation Canal Main Drain No.4. Includes flow through wasteway and powerplant returned to Colorado River. H.M. BABCOCK, District Chief, .;SD Tucson, Arizona October 13, 1965 EI. Y