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<br />"IIIl <br /> <br />"IIIl <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Si nce average yearly f1 ow into the two reservoi rs is less than the <br />total reservoir capacity, and since all water may be released frOOl <br />storage in some years, the simulated operational model usually assumes <br />each reservoi r begi ns the storage season empty. Large yearly f1 uc- <br />tuations in basin yield occur due to climatic variability. During <br />wetter years much less stored water is required for irrigation, per- <br />mitting carryover to subsequent years. In practice, however, the <br />reservoirs are seldom drained completely. <br /> <br />Basin yields during the wet years are sufficient to fill the <br />reservoirs to capacity. In some very wet years water will be "lost" <br />due to i nsuffici ent storage capacity even if both dams are repai red <br />and allowed to utilize their full storage potential. Historic basin <br />water yields are discussed in further detail in the following section. <br /> <br />3. Out~of-Priority Storage <br /> <br />The Agreement described abo'le wi th the State Engi neer for use of <br />these reservoirs in aid of Rio Grande Compact administration further <br />enhances the availability of water for storage in the reservoirs. <br />Under thi s program water which otherwi se woul d be routed down the <br />river in satisfaction of Colorado's interstate obligation is captured <br />in the reservoi rs. As the water year progresses, and the actual <br />interstate obligation is more precisely known, the State Engineer may <br />order the water delivered to New Mexico and Texas, or (if not needed <br />for Compact purposes) he may release the water for use in Colorado. <br /> <br />IV - 11 <br />