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WRSIC INFORMATION - <br />DEPARTMENT OF THE INTERIOR, GEOLOGICAL SURVEY, WATER RESOURCES DIVISION <br />ABSTRACT -INDEX SHEET <br />1. Classification 4. Date sent to <br />Central Region <br />2. Title (all caps) HYDROLOGI E FF EC TS OF REDUCING <br />IRRIGATION TO MAINTAIN A PERMANENT POO I JOHN 5. No. page <br />6. No. illustrations <br />MARTIN RESERVOIR, ARKANSAS RIV V ALLEY, COLORADO <br />7. No. tables / <br />3. Author s Ri chard R. Luckey <br />8. No. references <br />9. Descriptors Water transfer, Water distribution (applied), Computer models, <br />Prior appropriation, Reservoir operation, Aquifers, Colorado <br />10. Identifiers Southeastern Colorado, Arkansas River valley, John Martin <br />Res ervoir <br />11. Type of publication U.S. Geological Survey open-file report <br />12. Abstract: The U.S. Geological Survey has evaluated a plan by the Colorado <br />Division of Wildlife to maintain a permanent pool of 10,000 acre -feet (1.2X10 <br />cubic meters) in John Martin Reservoir on the Arkansas River. This pool would <br />be maintained through the use of water assigned to shares in the Catlin Canal. <br />Company that the Division has acquired. This plan was evaluated using a <br />lumped parameter model developed to test management alternatives in a stream - <br />aquifer system. A 25 -year period from 1949 through 1973 was simulated. Based <br />on this simulation, it is concluded that (1) the Division of Wildlife has <br />sufficient shares in the.Catlin Canal Company to maintain a permanent pool of <br />the proposed size, (2) surface -water diversions by most other canals in the <br />basin would increase slightly under the proposed plan, (3) the flow at the <br />Colorado- Kansas State line would increase slightly under the proposed plan, <br />and (4) the ground -water system would not be significantly affected by the <br />proposed plan. <br />1 of 1 <br />