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<br />UNITED STATES
<br />DEPARl'MENT OF THE INTERIOR
<br />GEOLOGICAL SURVEY
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<br />COWHAnO RIVER AND TRIBUTARIES IN LOWER BASIN
<br />Annual Summary for Water Year ending Sept. 30, 1963
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<br />PROVISIONAL RECORDS
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<br /> Lake Mead Colorado l2ke
<br /> Little Colorado River-Grand Canyon Virgin River Mohave
<br /> Colorado Paria Colorado River Usable > below Usable
<br /> River River River Suspended Little- Contents Evaporation '!i Hoover Contents
<br /> Lees Ferry Lees Ferry Cameron Rnnoff Sediment field end of mo. Dam end of mo.
<br />1962 Acre-feet Acre-feet Acre-feet Acre-feet Tons Acre..feet Acre-feet Inches Acre-feet Acre-feet Acre-feet
<br />Oct. 543,700 1,490 4,500 554,900 8,714,000 6,710 23,487,000 8.7 103,200 *634,000 1,387,000
<br />Nov. 434,600 702 3,110 439,100 1,119,000 6,590 23,258,000 4.8 57,000 612,900 1,486,000
<br />Dec. 335,200 867 159 338,600 554,900 7,460 22,990,000 3.9 45,300 606,100 1,699,000
<br />1963
<br />Jan. 182,700 790 12 180,400 264,000 10,180 22,676,000 7.0 81,700 482,300 1,682,000
<br />Feb. 374,100 1,300 2,130 370,900 328,300 9,510 22,496,000 3.6 4~,200 574,900 1,699,000
<br />Mar. 187,800 704 1,310 201,100 142,900 6,060 21,864,000 5.6 64,500 871,300 1,703,000
<br />Apr. 60,500 390 1,750 71,420 23,840 4,220 21,054,000 6.6 73,600 864,500 1,734,000
<br />May 62,120 254 0 78,720 1"(,870 3,880 20,197,000 6.9 75,200 911, 300 1,801,000
<br />June 140,500 202 0 147,800 16,250 3,130 19,538,000 8.3 8Ej,500 763,500 1,596,000
<br />July 89,750 208 0 107,900 8,960 3,360 18,699,000 12.8 131,000 908" 200 1,465,000
<br />Aug. 61,800 7,710 40,840 111,100 1,317,000 7,640 17,937,000 11.3 112,000 856,600 1,395,000
<br />Sept. 59,800 6,990 29,990 121,800 5,422,100 12,590 17,371,000 5.3 51,200 724,200 1,406,000
<br />Total 2 533 000 21 610 83 800 2 724 000 17 929 000 81 330 -6,253,000 84.8 923,400 8 810 000 +58 000
<br /> Colorado Havasu Colorado Diversions between Colorado Diversions at Colorado
<br /> River l2ke River Parker and Blythe River Imperial Dam River Pilot
<br /> below Usable below Colo. R. Palo below All- Gila Gila below Knob
<br /> Davis Contents Parker Indian Res. Verde Cibola American Gravity River Yuma Ret urn
<br /> Dam end of mo. Dam Canal Canal Valley Canal Canal Dome EI Ef
<br />1962 Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet Acre-feet
<br />Oct. 588,100 566,900 471,000 31,710 61, 300 439,400 348,000 56,210 245 82,870 0
<br />Nov. 513,800 551,700 434,300 28,080 53,820 423,400 3l6,200 57,740 221 105,500 72,030
<br />Dec. 368,800 540,000 286,500 26, 200 43,660 295,700 181,900 39,300 193 133,300 7,860
<br />1963
<br />Jan. 493,500 540,900 346,400 8,660 45,670 333,500 238,300 38,660 147 101,100 15,240
<br />Feb. 545,806 518,600 467,300 33,150 62,720 399,100 281,300 48,950 91 121,200 3,750
<br />Mar. 854,400 556,000 734,700 49,960 85,280 617,500 514,800 72,800 264 65,190 110,800
<br />Apr. 810,500 592,200 690 , 300 47,860 78,980 645,700 529,700 86,260 246 79,760 112,100
<br />May 816,700 600,400 707,700 48,020 90,570 604,000 462,200 107,700 84 96,610 2,180
<br />June 978,200 593,200 840,200 52,760 103,600 701,800 533,800 112,000 288 74,470 101,500
<br />July 1,024,000 556,500 933,400 56,730 116,900 , 793,600 617,300 113,400 506 79,220 126,100
<br />Aug, 923,700 565,800 822,000 55,600 101,300 735,300 603,700 106,900 120 83,050 147,800
<br />Sept. 702,500 542,900 635,200 49,410 84,340 , 574,900 456,400 81,880 5,360 112,000 66, 240
<br />Total 8,620,000 -24,700 7,369,000 488,100 928,100 6,564,000 5,084,000 921,800 7,760 1,134,000 765,600
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<br />~ Lake Mead evaporation computed by mass-transfer method. Figures of acre-feet determin~d
<br />surface area of lake corresponding to average water surface elevation during month. I
<br />EI Includes Yuma Main Canal wasteway and Reservation Canal Main Drain No.4.
<br />E! Includes flow through wasteway and powerplant returned to Colorado River.
<br />* Corrected figure.
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<br />from
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<br />DOUGLAS D. LEWIS,
<br />Tucson, Arizona
<br />October 11, 1963
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<br />District Engineer
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