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Month <br />Gravel Pit Depletion <br />Credit for Potential C.U. Below Gravel <br />Pit <br />Net <br />Evaporative <br />Depletions <br />After Dry-up <br />Under Pit <br />Ponds <br />Gross <br />Evaporation <br />Gross <br />Evaporation <br />Gross <br />Evaporation <br />Mean <br />Monthly <br />Temp <br />Gross <br />Evaporation <br />Adjusted for <br />Ice <br />Potential <br />C.U. Rate No <br />Effective <br />Precip <br />Potential <br />C.U., Rate <br />No Effective <br />Precip <br />Dry-up <br />Credits from <br />Irrigated <br />Lands <br />Inundated <br />By Pit Pond <br />(in) <br />(ft) <br />(AF) <br />(Deg F) <br />(AF) <br />(in) <br />(ft) <br />(AF) <br />(AF) <br />(1) <br />(2) <br />(3) <br />(4) <br />(5) <br />(6) <br />(7) <br />(8) <br />(9) <br />(10) <br />January <br />0.40 <br />0.03 <br />0.57 <br />9.15 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />February <br />1.20 <br />0.10 <br />1.72 <br />14.60 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />March <br />_ 2.40 <br />0.20 <br />3.44 <br />26.60 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />April <br />3.60 <br />0.30 <br />5.16 <br />39.10 <br />5.16 <br />0.14 <br />0.00 <br />0.00 <br />5.16 <br />May <br />5.00 <br />0.42 <br />7.17 <br />47.85 <br />7.17 <br />5.00 <br />0.42 <br />7.17 <br />0.00 <br />June <br />6.20 <br />0.52 <br />8.89 <br />55.85 <br />8.89 <br />6.13 <br />0.51 <br />8.79 <br />0.10 <br />July <br />6.40 <br />0.53 <br />9.17 <br />61.65 <br />9.17 <br />6.04 <br />0.50 <br />8.65 <br />0.52 <br />August <br />5.20 <br />0.43 <br />7.45 <br />59.75 <br />7.45 <br />5.15 <br />0.43 <br />7.38 <br />0.07 <br />September <br />4.40 <br />0.37 <br />6.31 <br />52.20 <br />6.31 <br />4.25 <br />0.35 <br />6.09 <br />0.22 <br />October <br />3.00 <br />0.25 <br />4.30 <br />41.60 <br />4.30 <br />0.00 <br />0.00 <br />0.00 <br />4.30 <br />November <br />1.60 <br />0.13 <br />2.29 <br />27.90 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />December <br />0.60 <br />0.05 <br />0.86 <br />13.45 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />0.00 <br />Total <br />1 40.00 <br />3.33 <br />57.33 <br />48.45 <br />I 26.71 <br />2.21 <br />38.08 <br />1 10.37 <br />Notes <br />Surface Area <br />Table 2 -A <br />Gunnison West Pits - United Companies <br />Gunnison West Gravel Pit Dry Up Credits Calculation Sheet - Current <br />Pit Credit and Net Evaporative Depletions <br />17.20 <br />acres <br />1) Month. <br />2) Annual value from CDSS Evaporation Contour at Site distributed according to SEC monthly percentages for elevation above 6500 MSL. <br />3) CoI (2) / 12. <br />4) CoI (3) * 17.20 acres, as deterrruned in a review of aerial imagery. <br />5) Mean Monthly Temperature from NOAA recording station Gunnison 3 SW. <br />6) If column (5) is less than 32 deg, then ice occurs and evaporation equals zero. <br />7) Potential consumptive use without precipitation, from StateCU using Upper Gunnison High Elevation Calibration Coefficient. If greater than Gross Evaporation, then <br />Gross Evaporation was used. <br />8) Col ('7) / 12. <br />9) Col (8) * 17.20 acres. Equals credit for dry up under pit. <br />10) Net depletions equal CoI (6) - Col (9). <br />P: \061- 052 \030- Gunnison West \SWSP - 2011 Amended\Tables\ Wright Water Engineers, Inc. <br />Gunnison West 2011 SWSP Amended Tables.xlsm 3/15/2012 <br />Des by'WCR <br />Ckd by:PRF <br />