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<br />UNITED SI'ATES
<br />DEPARTMENT OF THE INTERIOR
<br />GEOLOGICAL S-unv"E"i
<br />
<br />PROVISIONAL RELEASE
<br />
<br />COIDRADO RIVER AND TRIBlJrARIES rn LCJ,olER BASrn
<br />September 1968
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<br /> Colorado Colorado Colorado Diversions ~~~~en Colorado Diversions at
<br /> Colorado Paria Little Colorado Virgin River Lak. River Havasu River Parker and Bl he River ImT"lPrial Dam Colorado
<br />Dat. River River Colorado River River lake Mead below Mohave be low Lak. below Colo. R. Palo below All Gila Gila River Pilot
<br />Sept. Ie., La" Hi ver Grand Little- Usable Hoover Usable Davis Usable Parker Indian Verde CiOOla American Gravity River below Knob
<br />1968 Ferry Ferry Cameron Canyon field Contents Dam Contents Dam Contents Dam Res. Canal Valley Canal Canal llo= Yuma Feturn
<br /> .
<br /> of, d, d, d, of, acre-ft d, acre-ft of, acre-ft d, d, d, of, d, d' of, or, or,
<br />1 10,400 6.2 0.70 12,100 57 15,083,000 4,700 1,412,000 13,200 563,300 12,000 892 1,460 8,620 6,500 1,340 1.0 6JO 1,310
<br />2 9,920 J.8 .JO 10,800 5J 15,098,000 5,020 1,396,000 13,700 560,900 11,900 908 1,450 9,420 6,480 1,540 .99 9J5 1,060
<br />J 11,900 3.0 .10 10,700 ,55 15,100 ,000 9,800 1,389,000 12,200 560,300 11,700 888 1,450 10,300 6,790 1,640 .9J 768 1,140
<br />4 12,700 J.O 0 12,7.00 55 15,095,000 12, 600 1,390,000 11,800 559,000 11,100 878 1,480 10,100 7,200 1,730 .90 656 1,330
<br />5 13,600 J.8 0 13,400 57 15,088,000 13,300 1,392,000 12,000 558,400 10,000 874 1,610 10,000 7,590 1,550 .8J 6J5 1,370
<br />6 1},6oo 4.0 0 14,400 55 15,087,000 12,200 1,392,000 11 ,800 556,200 11 , 300 8J6 1,650 9,340 7,670 1,540 .87 614 1,400
<br />7 11,200 4.5 0 14,100 57 15,097,000 8,100 1,384,000 13,000 552,400 11,600 810 1,690 8,810 7,460 1,410 .86 601 1,360
<br />8 10,500 4.0 0 1l,700 57 15,110,000 5,430 1,372,000 12,200 550,300. 11,600 804 1,680 9,540 7,130 1,030 .85 624 1,350
<br />9 12,700 4.2 0 10,900 59 15,112,000 12,100 1,372,000 11 , 200 548,800 11,000 8J4 1,650 9,800 7,020 1,460 .7J 617 1,240
<br />10 13,400 4.2 0 13,700 59 15,109,000 12 , 400 1,375,000 11,600 548,100 9,800 846 1,630 9,690 7,050 1,640 .69 946 711
<br />11 15,000 4.0 0 14,100 59 15,103,000 13,&:>0 1,378,000 11,300 548,100 9,490 846 1,610 9,350 7,000 1,600 .67 1,390 0
<br />12 14,200 4.2 0 15,700 59 15,103,000 13,800 1,3/35,000 10,500 548,500 8,930 848 1,570 8,610 7,130 1,600 .56 1,310 0
<br />lJ 12,600 4-:' 0 14,400 57 15,09'7,000 14,100 1,391,000 10,600 549,000 8,270 8J4 1,640 8,210 6,620 1,500 .50 996 0
<br />14 11,400 4.0 0 13,200 57 15,105,000 8,690 1,387,000 10,600 549,000 8,330 8JQ 1,510 -1.720 0,430 1,250 .49 992 0
<br />15 7,490 6.9 0 11 ,600 57 15,113,000 6,440 1,380,000 10,600 549,500 8,960 820 1,420 '7,J90 6,120 1,leo ,J9 1,020 0
<br />16 10,900 4.8 o' 7,780 57 15,113,000 12,400 1,382,000 10,700 547,400 10,100 826 1,450 7,440 5,890 1,490 .J8 71J 0
<br />17 11,900 4.0 0 11,800 57 15,107,000 12,100 1,381,000 11,900 544,100 9,860 814 1,460 7,890 5,930 1,620 ,J7 67J 0
<br />18 10,600 4.2 0 12,400 57 15,090,000 13,900 1,386,000 10,900 545,600 8,720 796 1,450 8,460 6,000 1,650 .J8 644 0
<br />19 9,950 4.5 0 11,200 57 15,083,000 13,900 1,389,000 11,900 548,100 7,740 764 1,360 8,450 6,260 1,640 .J4 !JJ7 0
<br />20 9,680 4.2 0 10,500 55 15,076,000 13,600 1,392,000 12,500 550,100 9,680 750 1,330 7,760 6,220 1,540 .J8 579 0
<br />21 7,91~ _ 3.8 0 10,300 57 15,071,000 10,800 1,390,000 11,800 551,500 9,860 740 1,290 7,070 6,280 1,320 .J8 589 0
<br />22 5,430 4.0 0 8,400 57 15,071,000 9,220 1,387,000 11,700 550,100 10,100 734 1,320 8,360 6,2eo 994 .33 !JJ5 0
<br />23 7,700 3.2 0 6,oeo 64 15,058,000 14,000 1,389,000 12,000 548,600 9,750 690 1,390 8,700 6,300 1,430 .35 586 0
<br />24 9,880 4.5 0 8,580 64 15,048,000 12,900 1,390,000 11,800 550,100 9,420 670 1,360 8,810 6,300 1,710 .32 571 0
<br />25 10,400 4.2 0 10,400 60 15,033,000 13,400 1,393,000 11,900 551,500 9,020 670 1,410 8,640 6,490 1,580 ,26 584 0
<br />26 9,800 4.8 0 11,000 !JJ 15,021,000 13,300 1,398,000 10,400 555,600 7,650 664 1,410 8,340 6,460 1,440 ,32 590 0
<br />27 ll,400 4.0 0 10,300 57 15,014,000 13,500 1,402,000 11,300 556,000 8,590 664 1,390 7,880 6,420 1,460 .28 580 0
<br />28 8,450 3.5 0 12,000 55 15,01'7,000 10,100 1,401,000 11,200 554,800 9,580 666 1,170 7,210 6,100 1,120 .25 594 0
<br />29 6,510 4.0 0 8,970 55 15,021,000 5,730 1,389,000 11,400 555,600 8,920 660 1,100 '7,940 5,860 1,010 .16 576 0
<br />30 8,970 ).2 0 6,920 55 15,018,000 13,100 1,393,000 11,000 556,400 8,820 688 1,150 8,550 5,830 1,190 .15 546 0
<br />)1
<br />Mean 10,670 4.16 0.04 11,340 57.3 -- 11,150 -- l1,b20 -- 9,793 785 1,451 <3;613 6,5!JJ 1,440 0.53 726 409
<br />Acre- 634,900 248 2.2 674,600 3,410 663,300 -- 691,600 -- 582,700 46,700 86,J60 512,500 390,400 85,690 32 43,180 24,340
<br />feet --
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<br />Revision: Pilot Knob :Return for August 1968, acre-feet should read 1ll,OOO 1nstead of 11,000.
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<br />* Furnished by U. S. Bureau of Reclamation, based on poverp1ant records.
<br />Lake ~ad evaporation by mass-transfer method during month was 69,300 acre~feet, equivalent to 7.95 inches.
<br />
<br />H. M. Babcock, District Chief
<br />Water Resources Division
<br />Tucson, Arizona
<br />Oct. 28, 1968
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