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<br />
<br />W(>TERN BOUNDARy \VATER BULL[TI~j 1%5 INHRN^TIO~j"L BOUt.DARY AND ','lATER COMMISSION
<br />
<br />TWENTY.ONE MILE WASTEWAY (VALLEY DIVISION. YUMA PROJECT)
<br />
<br />DESCRI!'TlON: Water-stage recorder and control welT on wasteway for discharging water from the West Maln Canal to fir
<br />Colorado River. This wasteway islocared lD At~ona 18.5 miles downstream from the norrherly Lnt<:matlfl(l,;ll bou.nr:l.l.-.:y.
<br />17.4 m,les dowmltream from MoreloB Diversion Dam. and 2.2 miles upHtream from the southerly inTernational bound-
<br />ary. It \5 the farthest downSTream of the wree wastew,y' di5ch.1rgHlg wlIste water from the Valley DJVISIOn of the Yuma
<br />PrOject In the United Suites IfI[O the i1mltrophc sectioo of the Colorado River.
<br />RECORDS: Flow '8 computeU from head on the Wl"IT measured by the wilter-srago;' l"Ccorder and welT rat,ng detcrrmnc'<l by
<br />monthly CUT1"l"nt meter meilllUI1'mcnt9. Statian operated by the Umted S[8te~ SectIon of the CommiSSIon. Recordll avail-
<br />able: Dail~ dlllcharge. January 1951 through Decel'llbcr 1965. obullned by the UnIted St3.tl'9 Sl.'ctlon; mlll1chly dIscharge.
<br />March 193QthroughDeccmbcr 1950, brBureau o[Reclamatlon.
<br />REMARKS: Thl9 w.lsteway "'~Ii completed and flow began Much 14, 1939. Since May 13. 19~4, waste waler [rom the Wesl
<br />Main Canal wl'uch p~I{IQ'Hly dlSCh3rged acroSS the southerly land boundary haa been ret1Jrn"'d to the CoJlora.do RIver
<br />wough thlswaale\VllY.
<br />EXTREMES: Prior to January 1951. TT1.UlmUm monthly dl:scMrge. 2, 860 ac~-tel."t. ].Iruary J946; mlnlm'lm monthly <115.-
<br />charge. 122 acre-feet. September 1950. Sll1.:eJanuary 1.1951. maxln1um!n9tantaneouad,sch.argc. 102~cvnd-feet. Jan-
<br />uary 24. IQ54 at mu:lmum gage heigh!: at 95.46 teel (present datum); minImum instam;aneoull dlacl1arge. zero during a
<br />panoCmoatmonth5.
<br />
<br />Mean Daily Oi.charee in Second Feet 1965 - Annual and Period Summary
<br />
<br />D., J'n. Feb. MI.ch April M., June July AUl. Sept. D" N"~
<br />1 0.' 0.2 30.4 8.~ 2.1 0,1 0 0,' I.' H 0.1 2.0
<br />2 2., 5.5 I.' " 0,1 .., '.2 8.5 0.' 0,1 .2 .1
<br />, 1.0 I .6 .. lb.2 5.2 l3.b '-' .0 I 5.3 ~. & ., I " I
<br />. 1.2 ,., '.2 31.J I.' 5.5 I.' .1 0 I. 3.0 1.0 2.7
<br />. 1.0 1O.t) 8.7 Il.b .1 '.3 .' 1.1 1.3 l.i 2.2 l~. B
<br />, 2,0 10.2 1O.0 1.5 3.9 J.' 3.' ,.8 3,5 1.1 ~.1 ;
<br />7 '.0 12.7 .3 " 2.6 J.' 2,; ,.. 3,' '.0 " ,I
<br />8 .., 10.2 " .3 13.1 ',5 2.0 1,0 ., 1O.b 3,0 0
<br />, I., 11.3 '.3 , , " 0 0 11.0 5.1 5,3 .1.0 0
<br />10 0,0 10.5 ,., I.' 2.1 1.5 0 '.1 ,,' ,.. '-' "
<br />11 0,' .' 12.4 U U l.J 4.a ., 0 '.1 ,I '0
<br />" I.' .3 II.B 0 ',I 0 J5.8 .. 2.5 .8 ,I "0
<br />" '-' l.I '.J '-' .0 3.5 12.0 5,3 '.0 17.9 0 '0
<br />u 6,' U ,6 5.2 I.B 3.' ., ,3 0 5,6 0 '-'
<br />" 12.1 ,.2 l.O '.0 I.B ." 8.' 16.3 '-' ,I 0 U
<br />" 1 8 ,6 12.5 ,2 .1 '3 8 ,I 5.0 5,' 2.2 , 3 5.1
<br />" .8 ,8 ~.O ,I 2., ,I .. 1l.7 2,6 ,3 " ; U
<br />" '.1 ,2 0.3 ., 3.9 ,I 3.1 ,,' 1.7 ,2 I .8 2. ~
<br />" U '.1 0,6 .8 0 3,' 3.2 6.5 '" 1.3 , , 3,'
<br />20 " 2.0 ,2 .0 3,1 0.0 1.0 1.3 15.5 .2 " 3 '-'
<br />" 5.8 5.5 .2 .3 3,5 ,.8 .1 2.0 ',2 .2 '" ,I
<br />" 2.. 2,' 0.0 5.5 3,0 U I., ~ .5 ,~. R ,I ,5 1
<br />" .5 I.' 2.' .8 1I.1J 0 '.9 2.' 2.3 .. ,. tH
<br />.. 5.0 5.2 ,., .1 U 0 2.1 1.0 5,0 I.' 0
<br />" ., 2.3 0.2 .2 12.9 8.0 .6 '.1 " .5 2.2 J.~
<br />" " 0.3 15.2 8,5 H.I 1,2 3.0 " 9..1 ,2 6.2 2.7
<br />" 3.2 3,' 5.8 0,0 3.' 2.' 5.1 " 8,0 .2 3.3 . ~.O
<br />28 0.' \7.3 U 1.1 3.8 8.1 ,0 " ',] I., 11.0 '0
<br />" 8.' 2,1 .0 0.1 1.1 0 "I 11.1 25.7 .0 :u'
<br />80 3,' 5,' 2.3 '.3 1.0 2.0 I,' 11.0 I., 0 ,
<br />81 " H.8 0 .. ,3 ,3 ,2
<br />S,. 143.2 119.0 105.6 116.1 125.0 bJ.2
<br />110.3 204.2 137.1 89.3 I~:.. 4 on.7
<br /> Current V", 19b5 Period 1939-1'165
<br /> EJtrellle Glle Eltreme5econd Feet "'fr.le Totll Ac.1.' Fnt
<br />Month Fnt Hilh ~ Low Second
<br /> Hilh L.. ... D., Feet Acre Feet "'1.'.'1' Muimum Min,mum
<br />J~, 94.48 92.94 '" ~J.I " 0.1 J.O 219 1,078 2, ~bO 21':1
<br />feb. '14.41 92.93 10 38.0 t , .1 5,1 '"' 91~ 2,510 2.~~
<br />"",, <)~."Jb ....2."14 1 51.0 10 .1 0.0 .0; il4j 1,660 293
<br />Apr. '15.22 91.92 " 68.8 ,,0 0 '.0 m "" 1,940 m
<br />"" '14.71 92.n 8 49.2 t 3 0 ,.. m ].132 2. ~70 lli3
<br />J~. '15.26 92.'12 " 70.2 , 0 3.5 209 '8< 2..150 209
<br />Ju11 94.41 92.':12 12 37.7 0 0 2.' In 850 1,050 In
<br />"" 94.4'< 92.92 " 35.3 I 0 U 230 '" 2,530 200
<br />s..pt. 95.10 92.92 n 63.0 3 0 U 288 '90 2.180 '"
<br />Oct. 94.80 92.93 " 52.9 I 0 '.0 "" '" 2,l(llJ '"
<br />~ov . Q4.34 92.92 20 32.4 . 0 3,3 '" l,lOO 2,330 I"
<br />Do" 94.71 92.92 5 46.9 3 0 1.0 125 J.250 2.bRO ,"
<br />e~ll 95.26 92.'l2 70.2 0 '.0 2,R88 11.0.0;0 24,370 , eo8
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<br />t And othcrd;aY5
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<br />. Panlyestlmaled
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<br />~ E~!lm8Ied
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