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<br />UJUJG <br /> <br />The folloling tabulations for calendar year 1990 shol final records of diversions of water frol the lainstrm of the Colorado River, <br />return flol of such later to the eainstreee end consulptive use of such later. The records lere furnished by the U.S. Geological <br />Survey, International Boundary and ~ater COllission, Bureau of Indian Affairs, Bureau of Reclalation (Recluation). National Park <br />Service, u.S. Fisn IInd lii<iiHa 5&ifl'i, ifi~ .at6i iiSii a;aiicia~. ~h:r:ic~s fr:: the .~n.A!!!r~c!~ C!"~l ~nd Gila Gravity Main Canal <br />at Ilperia] Oee vere assigned to each user by adding each user's proportional share of the total canal losses to the delivery taken <br />by each user at its turnout frol the canal. <br /> <br />, <br /> <br />The tabulations also shol quantities of vater pUlped frol the lainstreae or frol veils in the Colorado River flood plain. Amounts <br />diverted by pUlping lere detmined by: (1) For lost electric pUlPS, diversions lire cOlputed on a monthly basis frol pover records <br />and a .kilolatthour per acre-foot factor. that vas determined by discharge eeasureeent; (2) For pueps other than electric and soee <br />electric pUlPS, a consueptive use factor of 6 acre-feet per irrigated acre per year las used. <br /> <br />There are undetmined alounts of measured return flov reaching the Colorado River by eeans of flol through aquifers connecting later <br />use areas to the eainstrm. ReclUlation, vorking v1th the U.S. Geological Survey, is continuing the research and investigative <br />prograa to detereine the aeounts of such unmeasured return flols. <br /> <br />Tlbulations for calendar yelr 1990 do include acceptlble deterainations of the unleasured Colorado River return flovs to lake Head <br />froelas Vegas ~ash vhich accrue the State of Nevada and a portion of the unmsured return flovs frol the VUIe Hesa vhich are credited <br />to the State of Arizona. <br /> <br />-, <br /> <br />8 <br />