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DEEP PERCOLATION OF RAIN ESTIMATE <br /> Average Precipatation and Eto for Tracy, CA <br /> --California Zone 12— 'Estimated <br /> Eto Percip. Deep Perc. <br /> _Month (inimo) (in/mo) (in/mo) <br /> JAN 1.55 1.98 0.43 <br /> FEB 2.24 1.39 <br /> MAR 3.41 1.46 <br /> APR 5.1 0.96 <br /> MAY 6.82 0.29 <br /> l JUN 7.8 0.52 <br /> JUL 8.06 0.04 <br /> AUG 7.13 0.12 <br /> SEP 5.4 0.26 <br /> OCT 3.72 0.5 <br /> NOV 1.8 1.23 <br /> DEC 0.93 1.57 0.64 <br /> SubTotal: 1.07 fn/yr <br /> Percipitation data:Soil Survey of San Joaquin County(1992). <br /> Normal Year Eto data:http://wwwdpla.water.ca.gov/(Zone 12) <br /> 'Assumption: If monthly precipitation exceeds potential ET then <br /> the difference is potential deep percolation. <br /> �i <br /> ! t <br /> F : <br /> 1 <br /> r pEASO� <br /> j NEIL O.ANDERSON&ASSOC.,INC. s <br /> GEOTEGHMCAL SER'ACE S-ENGINEERNG LARORATORIES Z u <br /> 22 Houston Ln.Lod],CA 55240 6 <br /> F (20e128>-37OS qS5 o LSP <br /> F_I <br /> Plate 4 <br />