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Table AI.4 - Evaporative Depletions Year 4 (2014) <br />Month <br />(1) (2) (3) (4) (5) (6) (7) <br />Gross Free Free Water Monthly Net <br />Surface Mean Effective Monthly Net Surface Volumetric <br />Monthly Fraction of Evaporation Rainfall Precipitation Evaporation Area Evaporation <br />Evaporation [in] [in.] [in.] [in] [acre] [acre -feet] <br />January 0.03 44.50 0.43 0.30 1.03 12.14 1.05 <br />February 0.04 44.50 0.37 0.26 1.30 11.68 1.26 <br />March 0.06 44.50 1.17 0.82 1.63 11.23 1.52 <br />April 0.09 44.50 1.76 1.23 2.77 10.77 2.49 <br />May 0.12 44.50 2.30 1.61 3.73 10.32 3.21 <br />June 0.15 44.50 1.67 1.17 5.28 9.87 4.34 <br />July 0.15 44.50 1.56 1.09 5.58 9.41 4.38 <br />August 0.14 44.50 1.75 1.23 4.78 8.96 3.57 <br />September 0.10 44.50 0.99 0.69 3.76 8.50 2.66 <br />October 0.07 44.50 0.89 0.62 2.49 8.05 1.67 <br />November 0.04 44.50 0.78 0.55 1.23 7.59 0.78 <br />December 0.03 44.50 0.52 0.36 0.97 7.14 0.58 <br />Notes <br />(1) = Monthly fraction of evaporation for elevations below 6500 ft from Guidelines <br />for Substitute Water Supply Plans. <br />(2) = Gross free water surface evaporation from NOAA Technical Report NWS 33 <br />(3) = Mean Rainfall - See AI.5 <br />(4) = Effective Rainfall = 70% Mean Rainfall <br />(5) = Columns (1) x (2) - (4) <br />(6) = Total free water surface area of pit based on 5 acre /year backfill rate <br />(7) = Column (5)/12 x Column (6) <br />27.51 <br />