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<br />AZ Return flow South GIl. V.lley wells (DPOC's) 9164 <br />AZ Return flow Yuna Mesa Outlet Drain 81 2788 * <br />AZ Return flow protective .nd regul.tory pumping unit CI 615 " <br />AZ Estimated u......sured groundw.ter return flow 01 34Z4 <br />AZ Return flow sh.re of GII. M.ln C.nal loss EI 195Z " <br />AZ Subtot.l return flow EI 19897 19897 check from .bove <br />AZ cons"",tlve Use (see note .bove) 18041 18041 check from .bove <br />A2 (A) Total for the North Gila Valley, The YLmB Irrigation and the luna Hesa Irrigation and Drainage Districts. and 'Unit BI. <br />AZ (8) Estimated at 85 percent of the luna Mesa Outlet Drain with balance credited to 'Unit 81. <br />AZ (C) Estlmated.t 85 percent of Protective .nd Regul.tory p"",ing Unit with bal.nce credited to 'Unit B'. <br />AZ (0) Estimated.t 38 percent of the North Gil. V.lley Diversion .t Imperi.l Dam plus 14 percent of Yuma Irrig.tion District diversion .t <br />AZ Imperi.l D.m. (B.sed on .n.lysis of the USGS Report 83-4ZZ0 entitled 'A Method for Estimating Ground-Y.ter Return Flow to the <br />AZ Lower Colorado River in the Yuma Areal) <br />AZ (E) Diversion"mil.ge weighted sh.re of GIl. M.in C.nal loss less c.nal surf.ce ev.por.tion (1397 .f/yr) .nd prheotopltytes (2154 .f/yr). <br />AZ (f) Additional unmeasured amounts of return flows from the Yuma Mesa Irrigation and Drainage District, 'Unit 81, the Cocopah Indian <br />AZ Reservation, and the Yuma County Water Users Association (YCWUA) are utilized to meet consumptive uses in the United States and in <br />AZ partial satisfaction of the Mexican Treaty obligation. Some of thes underground flows are recovered by pumping from wells on the <br />AZ Cocopah Indian Reservation and in the YCWUA area, and by some of the surface drains in the YCWUA area. Efforts will be made to at least <br />AZ quantify these return flows within broad limits by respective water user entities in future years. <br />AZ 81 Diversion adjusted for delivery to Mohave Valley t. D. D. (Chesney). <br /> <br /><::::> <br />c:;;, <br />i-'~ <br />0:, <br />..t-, <br />r~""> <br /> <br />. <br /> <br />. <br />