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<br />UNITED STATES
<br />DEPARTME~' OF THE INTERIOR
<br />GEOLOGICAL SURVEY
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<br />COLORADO RIVER AND TRIBUTARIES IN LOWER BASIN
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<br />October 1958
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<br />PROVISIONAL RECORDS
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<br /> Colorado Colorado Colorado Diversions b~~~een Colorado DiveT'sions at
<br /> Colorado Paria Little Colorado Virgin River Lake River Havasu River Parker and Bl the River Imperial Dam Colorado
<br />Date River River Colorado River River Lake Mead below Mohave below Lake below <rolo. R. Palo below All .uua Gila Pilot River
<br /> Lees Lees River Grand. Little- Usable Hoover Usable Davis Usable Parker Indian Verde Cibola American Gravity River Knob below
<br />Oct. Ferry Ferry Camer,on Canyon ~ ) field Contents Dam Contents Dam Contents Dam Res. Canal Valley Canal Canal Dome Ret urn Yuma
<br /> See note . t
<br /> cfs cfs cfs cfs cfs acre ft cfs acre-ft efs acre-ft cfs cfa cfa cfs cfa cfs cfs cfs efs
<br />1 6,000 19 2,440 8,300 94 23,313,000 15,700 ,529,000 11, 900 556,200 11,100 597 1,28Q n,soo 9,020 1,090 0 1,240 3,240
<br />2 5,730 14 1,200 7,760 76 23,295,000 15,700 1,536,000 n,80a 555,600 11,100 590 1,170 10,800 7,840 1,070 0 439 4,020
<br />3 5,730 11 634 6,900 72 23,285,000 12,900 ,537,000 11,900 554,600 11,200 597 1,140 10,700 8,760 1,130 0 1,210 2,280
<br />4 5,700 9.5 379 6,550 66 23,276,000 9,880 ,533,000 11,800 554,100 10,700 202 1,140 10,800 8,780 988 0 1,280 2,380
<br />5 5,610 10 254 6,310 72 23,276,000 6,580 ,523,000 12,000 553,700 10,600 0 990 10,800 8,820 784 1.3 1,270 2,780
<br />6 5,530 B.5 195 6,180 74 23,265,000 10,300 1,517,000 13,300 554,400 10,500 0 1,200 10,800 8,730 910 5.2 1,160 3,050
<br />7 5,360 B.O 122 5,990 74 23,258.,000 10,400 ,511,000 13,400 556,000 10,500 0 1,200 10,400 8,740 1,030 .5 1,150 2,910
<br />B 5,220 B.O 86 5,800 66 23,246,000 10,500 1,506,000 13,500 554,800 11, 800 0 1,230 10,400 8,800 1,000 0.1 1,140 2,930
<br />9 5,200 7.2 64 5,640 76 23,235,000 10,800 1,502,000 13,500 554,300 12,000 0 1,160 11,100 8,840 917 0 1,140 1,990
<br />10 5,220 6.B 270 5,610 70 23,222,000 10,800 ,506,000 13,400 553,700 12,000 0 1,130 11,000 8,990 732 0 1,160 2,350
<br />11 5,170 6.B 226 5,780 66 23,213,000 9,300 ,488,000 13,500 555,000 11, 200 52 1,000 11,600 9,040 742 0 1,150 3,380
<br />'2 5,030 6.4 181 5,700 70 23,208,000 7,140 1,478,000 12,000 558,400 10,300 371 1,050 11,500 9,050 727 0 1,410 3,760
<br />13 4,930 6.0 116 5,560 64 23,190,000 15,000 :L,486,000 10,900 560,300 10,400 540 1,110 9,810 8,660 942 0 1,280 3,900
<br />'4 4,830 B.O 84 5,400 66 23,169,000 15,600 1,496,000 10,800 561. 600 10,400 54B 1,150 9,440 8,550 1,120 0 1,240 3,440
<br />15 4,720 ~.O 62 5,310 66 23,149,000 15,400 .1,505,000 10,500 562~~00 10,100 564 1,200 9,540 8,460 1,040 '0 1..220 2,250
<br />16 4,680 7.6 43 5,180 74 23,135,000 12,900 1,509,000 10,600 561,800 10,100 551 1,129 9,250 8,260 1,020 0 1..130 1,840
<br />'7 4,580 6.4 30 5,090 64 23,115,000 14,300 1.1,514,000 10,700 563,500 8,860 530 1,100 9,250 8,190 1,000 0 1,050 2,050
<br />18 4,550 6.8 20 5,000 6B 23,100,000 9,550 1,512,000 10,700 564,000 9,180 530 868 9,010 8,120 923 0 1,040 2,090
<br />,9 4,450 6.8 15 4,930 70 23,094:,000 7,300 I, 508-,000 9,720 564..200 9,100 521 8B5 8,620 8,020 B32 0 1,170 2,300
<br />20 4,420 6.4 16 4,860 74 23,079,000 12,500 1,515,000 9,550 567,300 8,720 513 898 8,620 6,860 1,080 0 84 2,620
<br />21 4,600 6.0 11 4,830 64 23,053,000 12,300 1,517,000 9,060 565,200 8,860 513 954 8,480 6,630 1,050 0 0 3,010
<br />22 4,620 6.0 6.4 5,010 74 23,036,000 12,200 1,520,000 9,570 564,400 8,850 513 967 8,030 6,700 992 0 0 2,880
<br />23 4,550 6.0 3.5 5,040 82 23,018,000 12,700 1,525,000 9,760 563,700 8,740 517 925 8,110 6,690 852 0 0 2,690
<br />24 4,550 7.6 1.5 5,000 68 23,018,000 12,100 1,534,000 9,660 564,200 8,860 403 927 8,230 6,920 B16 0 0 2,760
<br />25 4,450 12 0.6 5,060 107 22,997,000 9,000 1,529,000 9,610 565.600 8,850 338 958 8,250 6,570 790 0 .0 2,390
<br />26 4,550 76 0.2 4,870 563 22,995.000 6,860 1,522,000 9,670 565~200 8,850 333 962 8,550 6,510 6531 0 0 2,980
<br />27 4,620 39 0 5,040 222 22,979,000 13,100 1,529,000 9,340 562,700 9,860 326 920 8,500 6,280 786' 0 0 3,280
<br />2B 4,850 20 0 5,130 172 22,959,000 14,100 1,538,000 9,330 562,000 9,060 319 857 8,910 6,150 B06 0 0 3,610
<br />29 5,140 15 0 5,340 147 22,938,000 14,100 1,546,000 9,250 561,500 8,010 321 B59 9,170 6..520 B08 0 ) 3,490
<br />30 5~970 12 2B 5,610 145 22,912,000 14,300 1,554,000 9,310 562,500 7,900 319 890 8,670 5,560 740 0 0 5,250
<br />31 6,100 11 17 6,350 140 22,895,000 13,800 1,562,000 9,460 563,300 7,900 319 97B 7,870 5,960 774 0 0 3,470
<br />Mean ----2....054 12.3 210 5 650 103 u_ 11 840 u_ 10 950 -- 9 860 352 1 039 9 600 7,775 90B 0.23 70B 2,947
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<br />feet 31<--',700 757 12,900 347,400 6,360 --- 728,300 _u 673 4GO - 606.300 21 670 63 900 590 500 478,100 55,820 14.1 43,560 81,200
<br /> SEDIMENT I
<br /> - ~,643,OOO
<br />Tons .-
<br /> 544,40<2. 6,190 ---
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<br />* Furnished by U. $. Bureau of Reclamation, baaed on powerplant records.
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<br />Lake Mead evaporation by mass-transfer method during month was 104,700 acre-feet, equivalent to 8.93 inches.
<br />Note.-October 1957 runoff shown in annual summary for Colorado River near Grand Canyon should be 774,900 acre-feet.
<br />---- 1958 water year figure should be 14,550,000 acre-feet.
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<br />t Includes Yuma Main Canal wasteway and
<br />Reservation Canal Main Drain No.4.
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<br />DOUGLAS D. LEWIS, District Engineer
<br />Tucson, Arizona
<br />Nov. 19, 1958
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