Laserfiche WebLink
Table l <br /> Martin Marietta Materials <br /> North Taft Hill Expansion Area <br /> Evaporative Consumptive Use <br /> Percent of Gross Lake Effective Net Lake Total Lake Lagged <br /> Month Annual Evaporation Precipitation Precipitation Evaporation Evaporation Depletions <br /> Evaporation (ft) (in) (ft) (acre-ft/acre) (acre-feet) (acre-feet) <br /> (A) B) (C) D E F G) <br /> Jan-14 3.0% 0.10 0.36 0.02 0.00 0.00 0.13 <br /> Feb-14 3.5% 0.11 0.48 0.03 0.00 0.00 0.05 <br /> Mar-14 5.5% 0.17 1.18 0.07 0.11 0.79 0.31 <br /> A r-14 9.0% 029 1.97 0.11 0.17 1.28 0.77 <br /> Ma -14 12.0% 0.38 2.74 0.16 0,22 1.66 1.22 <br /> Jun-14 14.5% 0.46 1.83 0.11 0.35 2.65 1.84 <br /> Jul-14 15.0% 0.48 1.02 0.09 0.38 2.86 2.40 <br /> Atâ–º -14 13.5% 0.43 1.42 0.08 0.34 2.59 2.59 <br /> Se -14 10.0% 0.32 1.27 0.07 0.24 1.82 2.31 <br /> Oct-14 7.0% 0 22 1.13 0.07 0.16 1.17 1.78 <br /> Nov-14 4.0% 0.13 0.59 0.03 0.09 0.69 1.24 <br /> Dec-14 3.0% 0.101 0.49 0.03 0.00 1 0.00 0.66 <br /> Total 100% 3.17 15.08 0.88 2.06 15.52 15.30 <br /> Total Exposed Water Surface= 7.52 acres within current permit boundary. <br /> Annual Precipitation= 15.5 inches -Based on Western Regional Climate Center Fort Collins,CO Station(050035) <br /> Gross Annual Evaporation= 38 inches-Taken from NOAA Technical Report NWS 33 <br /> Notes: <br /> (A)Based upon General Guidelines.1br Substitute Water Supply Plans for Sand and Gravel Pits. <br /> (B)Gross lake evaporation=(A)*(Gross Annual Evaporation/12). <br /> (C)Estimated using annual precipitation and monthly distribution of precipitation from the Western Regional Climate Center-Fort Collins,CO <br /> (050035). <br /> (D)Effective precipitation=0.7*(C)/12. <br /> (E)Net lake evaporation from exposed water surfaces=(B)-(D),there is no evaporation December-February due to below-freezing average <br /> monthly temperatures. <br /> (F)Total lake evaporation from exposed water surfaces=(E)*Total Exposed Water Surface.Area based upon review of aerial photography and <br /> discussion with operators. <br /> (G)Lagging calculations were based on the following parameters: <br /> Distance from stream=1,600 ft,Transmissivity= 160,000 gpd/ft,Specific Yield=0.2,No-flow Boundary=2900 ft <br /> Lagged depletions at the site include historical mining depletions and current and past evaporative depletions. <br /> 41111 B B A <br /> xatrr cuo,ulr nt, Bl S if 0 P-B R CIG D t N It C1 ATt S. I ( <br />