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Ms.Megan Gutwein August 16,2019 Page 8 of 25 Table 5 Historical Consumptive Use, Fallow Acres and Fallow Shares HCU HCU Current Pilot Adjusted CU Fallow CU Fallow HCU HCU Fallow CU Fallow Farm Name Minimum Maximum Irrigation Project HCU Minimum Maximum (2002) Average Year(2011) Average (2015) Irrigation Average Fields (2002) Average (1996) acre-feet acre-feet acre-feet a re-feet acres acres a re-feet acres acre-feet acre-feet acre-feet Diamond A 228.9 728.5 984.5 2.04 1123.7 894.9 1.97 370.5 172.4 727.7 940.9 Schweizer 17.1 60.4 67.3 1.91 212.2 212.2 1.86 32.6 13.8 60.4 79.3 Mameda 34.2 140.0 134.6 1.52 157.6 157.6 1.47 95.5 33.6 139.9 187.2 Groves 34.2 132.1 134.6 1.74 262.4 230.0 1.50 88.3 30.8 132.0 174.1 Mayhoffer 18.2 63.8 78.5 1.98 35.2 35.2 1.81 35.2 14.8 63.7 82.8 Total 332.6 1124.8 1399.4 - 1791.1 1529.8 - 622.0 265.2 1123.7 1464.2 Based on the year of historical minimum, calculated historical average, and the year of historical maximum diversions,fallowing of the fields associated with the Subject Shares result in minimum, average and maximum annual consumptive use values of 265.2 acre-feet, 1,123.7 acre-feet and 1,464.2 acre-feet, respectively, as shown in Table 5 above. This HCU analysis demonstrates the amounts of water that may be made available as consumptive use from the lands anticipated to be fallowed during pilot project operations for temporary municipal use by Colorado Springs. The actual amounts of water provided to Colorado Springs will vary depending on the actual number of acres fallowed during that year's operations, Colorado Springs'water needs, and water availability under pilot project operations. Under any circumstance, the Pilot Project will not be operated such that the total transferable consumptive use would exceed 1,000 acre-feet per year. II. Lagged Historical Return Flow Obligations A. URFs for Participating Farms As set forth in Section II.G,the Glover-Balmer analytical solution was used to calculate the lag effect of deep percolation return flows for the Participating Farms, per the following criteria, • Specific Yield = 0.20 • Transmissivity according to cited reference or through the applicant's detailed analysis • Use of the relevant ditch as the location of the no-flow boundary • The distance to the river is equal to the length of a line extending perpendicular from the river or drain to the centroid of the irrigated land; return flows accrue to the river or drain at this location on the river; and Martin and Wood Water Consultants,Inc.