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<br />Table 2 <br />Modifications to the DWR StateCU Model <br /> <br />Item Ori!linal Value Revised Value Explanation <br />Maximum 0.5 0.4 Average ditch loss of 20 percent and maximum farm <br />System efficiency of 50 percent for a system efficiency of 40 <br />Efficiency percent (O.8xO.5) are more reasonable for the Upper <br /> Gunnison basin considering the shallow soil types. <br />Grass Hay Crop Values from "Irrigation Water Values from "Water Use by The TR-21 crop coefficients are not reasonable given <br />Coefficients Requirement TR-21", USDA, April Native Grasses in High Altitude the low nighttime temperatures in the Upper Gunnison <br /> 1967 Colorado Meadows", USDA, basin. <br /> October 1 973 <br />Missing Option to set - 0.0 or use "Pro- "Pro-rated" Method. Diversions estimated based on crop water requirement <br />Diversions rated" method shortage. Shortage at structure estimated to be the <br />Records same as average shortage for structures with <br /> diversions within the same water district. See StateCU <br /> documentation for further details. <br />Irrigated Acreage Values within the HYDROBASE as Values identified and mapped Irrigated acreage values per structure were revised by <br /> identified and mapped in 1993 by in 2000 by the DWR. the DWR based on parcels identified in 2000. These <br /> the DWR as part of the Colorado values have not been entered into the HYDROBASE <br /> Decision Support System. database, therefore the irrigated acreage input to <br /> StateCU were modified to reflect the revised values. <br /> <br />Q <br />Q <br />N <br />.... <br />~ <br /><:r.l <br /> <br />Henan & Williamsen, P.C. <br /> <br />Page 6 <br /> <br />2001 Annual Report.xls, Table 2,12/1812002, rlh <br />