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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />002040 <br /> <br />shows .the location of the proposed restoration area and the facilities that would be used to convey <br />the brackish water to that area. <br /> <br />There are five sources of Yuma area brackish water that could easily be diverted into the <br />Bypass Drain. ,These waters are now delivered to Mexico as a part of its Treaty entitlement of 1.5 <br />million acre-feet per year. The sources include the flow from the Yuma Valley Main Drain and four <br />Drainage Pump Outlet Channels in the South Gila Valley. <br /> <br />Because of Bypass Drain capacity limitations the range of possible deliveries could be as high <br />as 75,000 acre-feet per year;. For purposes of this analysis, it is assumed that 8,000 acre-feet per year <br />from the Yuma Valley Main Drain and 30,000 acre-feet per year from the South Gila Drainage <br />Pump Outlet Channels would be delivered to the Delta area rather than being mixed in with and <br />included in the Treaty water delivered at the Northerly and Southerly International Boundaries. It is <br />further assumed that the 8,000 acre-feet per year of water'from the Yuma Valley Main Drain .would <br />be replaced by additional water pumped from the 242 Well Field andthat the 30,000 acre-feet per <br />year of water from the South Gila Drainage Pump Outlet Channels would be replaced by additional <br />releases from Lake Mead storage. <br /> <br />The legal and institutional precedent for' delivering brackish water to Mexico through the <br />Bypass Drain without charge against Mexico's Treaty entitlement, can be found in Minute 242. The <br />two nations would need to determine jointly that such a program is in their best interest, and it must <br />be recognized that users in the US would forgo opportunities to put the water to use. <br /> <br />Reclamation and CNA would be requested to design, construct, and, operate the necessary physical <br />facilities, although most of the facilities are already in place or are being designed. A Minute would <br />be added to the Treaty to coordinate facility construction and operation and to guarantee the <br />deliveries of brack!.sh water to the Delta wetlands. Should such a program be implemente~ the <br />Minute could provide that the allowable salinity differential between Imperial Dam and the <br />Northerly International Boundary would be reduced accordingly. <br /> <br />I <br />I <br />I <br /> <br />I <br /> <br />I <br />I <br /> <br />I <br /> <br />I <br /> <br />25 <br />