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<br />,-=.. <br />---. <br />C <br />io----" <br />...... <br />l>.j <br />l'Y <br /> <br />Location of Supply. Options Minimum Sustained Flow for <br />Supply For Overall Water Riparian Corridor and/or Other Periodic PulselFlushing Comments Quantity of Cost Pros & Cons <br />Option Management Plan Environmental Needs Flows and/or Cienega Needs Water <br />Action <br />United Lake Mead or Off-stream Dedicated flows to meet minimum Dedicated flows or water Water bank to be administered by Pro- Utilizes existing infrastructure <br />States & interstate / international water sustained flow needs or piggybacked on other dedicated Basin states and Interior <br />Mexico bank to meet environmental piggybacked on other dedicated flows to meet total pulse flow Assurances required from Con- Binational operational issues depending <br /> water needs flows to meet minimum sustained needs Mexican government that water on how the bank is structured and operated, <br /> flow needs would be dedicated to risk of diversion to non-governmental <br /> environmental uses, i.e., non- purposes, inconsistent with Mexican Water <br /> agricultural or municipal uses. Treaty 1.5 maf delivery requirement. Would <br /> require Treaty modification that could open other <br /> Lake Mead bank could incorporate issues. In the near term, may be limited <br /> a borrowing and payback capacity for offstream storage utilizing existing <br /> mechanism for other users. facilities. Limited capacity for offstream <br /> Arizona forbearance based on existing Arizona <br /> state law. May be more expensive than other <br /> alternatives. <br />United Develop surplus guidelines for Dedicated flows or flows Dedicated flows or water Assurances required from Pro- Utilizes existing infrastructure <br />States & Mexico, based on Lake Mead piggybacked on other dedicated piggybacked on other dedicated Mexican government that water Con- Binational operational issues, risk of <br />Mexico levels, excess water delivered to flows to meet minimum sustained flows to meet total pulse flow would be dedicated to diversion to non-environmental purposes, <br /> environment flow needs would be dependent needs would be dependent upon environmental uses, i.e., non- Inconsistent with Mexican Water Treaty 1.5 maf <br /> upon guidelines chosen guidelines chosen agricultural or municipal uses. delivery requirement. Would require Treaty <br /> modification that could open other issues. Could <br /> impact availability of surplus water and normal <br /> apportionments to United States' users. <br /> <br />DRAFT-Confidential and Privileged Information <br /> <br />Page 7 <br />