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<br />'4 <br /> <br />.- <br /> <br />.... Ih-"" 1:-' <br />. ,1-::0 L rF-i, , <br />~ &......I~ t.' <br />.. .". L <br /> <br />SAN MIGUEL WATER SUPPLY STUDY: A CASE STUDY IN <br />NON-STRUCTURAL ALTERNATIVES FOR IMPROVED <br />IRRIGATION WATER SUPPLIES <br /> <br />by <br /> <br />Jerry F. Kenny1), William E. Green2), & Daniel W. BOYd3) <br /> <br />ABSTRACT <br /> <br />The San Miguel study area is located in southwestern Colorado sixty miles south of Grand <br />Junction. Irrigated agriculture has been practiced in the study area since the late 1800's. <br />Investigations of alternatives for developing additional water supplies in the study area were <br />undertaken by the U.S. Bureau of Reclamation (USBR) beginning in the 1950's and were <br />completed in 1982. Most alternatives involved mainstem reservoirs, none of which were found <br />to be economically feasible. <br /> <br />i <br />i <br />i <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />Subsequent investigations undertaken by the Colorado Water Conservation Board (CWCB) <br />have concentrated on smaller, less expensive project configurations which do not involve <br />main stem reservoirs. Alternatives which utilize existing sources of water with improvements <br />and expansions of existing facilities are the preferred option. Conservation, improved water <br />management techniques, modifications to system operations, and other non-structural <br />measures appear to be viable options for significantly improving the reliable yield of the existing <br />systems prior to making any structural modifications. <br /> <br />I <br />I' <br /> <br />, <br /> <br />I: <br />I <br />, <br />, <br /> <br />1) Senior Engineer, Boyle Engineering Corporation <br />2) Senior Water Resources Engineer, Colorado Water Conservation Board <br />3) Managing Engineer, Boyle Engineering Corporation <br />