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<br />OCT-16-98 FRI 11:06 UPPER COLORADO RIVER COMM <br />00D231 <br /> <br />P.09 <br /> <br />Six State Proposal <br />Straw Man Draft <br />October 13, '1998 <br /> <br />a reservoir spill would otherwise be imminent. <br /> <br />IV. Proposed Lake Mead Rescn-oir Opcratinl! Critcria <br /> <br />A. Introduction <br /> <br />The December 17,1997, Draft of the California 4.4 Plan outlined a proposal for Lake <br /> <br />Mead reservoir operations. The Six States agree with many of the concepts set forth in that <br /> <br />proposal. However, there are several areas in which those concepts deviate from the principles <br /> <br />discussed above and thus are in need of further definition, discussion and clarification. This <br /> <br />section briefly identifies those areas and proposed additional concepts. <br /> <br />The California 4.4 Plan describes three levels of surplus criteria. Level 1 is a spill <br /> <br />avoidance strategy based on anticipated runoff. Level 2 is a strategy that attempts to keep the <br />, <br /> <br />Colorado River Aqueduct full during the transition period agriculture)during which conservation <br /> <br />measures are being implemented within California. Level 3 is similar to Level 2, except that the <br /> <br />surplus supplies are more limited, and California is required to use additional alternate supplies <br /> <br />including dry year land fallowing and groundwater basin pumping options if it wishes to keep the <br /> <br />Aqueduct full. <br /> <br />The Six State proposal envisions a set of criteria for reservoir operation in which the <br /> <br />8 <br />