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<br />Chapter 2 - Define Water Supply & Water QualitY Needs <br /> <br />Irrigation Facilities <br /> <br />A recent inventory of irrigation facilities lists 84 ditches in the East River Basin. <br />The major ditches are: <br /> <br />Name <br /> <br />Stream <br /> <br />Decreed Amount in cfs <br /> <br />East River No. 1 <br />East River No.2 <br />Boeker <br />Oillsworth <br />Verzuh <br />Fisher <br />Lafayette <br />Verzuh- Young-Bifano <br />TOTAL <br /> <br />East River <br />East River <br />Slate River <br />Slate River <br />East River <br />East River <br />East River <br />East River <br /> <br />82.0 <br />44.87 <br />44 <br />43.03 <br />42.5 <br />42.0 <br />40.01 <br />40.25 <br />379.26 <br /> <br />The East River No. 1 is the largest ditch in the basin with a decreed amount of 82 <br />cfs (53 MGO) and irrigating more acres than any other ditch in the inventory. <br />Approximately 11,200 acres are irrigated in the East and Slate River Valleys. The <br />total amount of water decreed is 259.09 cfs (167 MGD) from the Slate River and <br />846.616 cfs (547 MGO) from the East River. Records are not kept for all ditches, <br />but the larger ditches monitored by the Colorado Division of Water Resources <br />have diverted an average of 88,600 acre-feet annually (7.9 af/acre) over the last <br />17 years of record. One inconsistency, identified during this study, is that the <br />Phase I Upper Gunnison-Uncompahgre Basin Study predicted the need for average <br />diversions of about 28,700 acre-feet or 3.92 af/acre to satisfy the full supply <br />needs of 7,320 acres of irrigated land in the East River Basin uses. <br /> <br />64 <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 />I <br />I <br />