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! Estimate for Rain Infiltration, Manteca, CA <br /> *Ave. Precip. <br /> r Month (in/mo) <br /> ! Jan 2.84 <br /> i Feb 2.46 <br /> Mar 1.63 <br /> Apr 0.87 <br /> May 0:69 <br /> Jun 0.13 <br /> Jul 0.02 <br /> Aug 0.14 <br /> Sep 0.15 <br /> Oct 0.62 <br /> Nov 1.43 <br /> Dec 2.00 <br /> Sum: 1Z98 intyr <br /> Calculation of Estimated Infiltration: 12.98 in x 0.9 = 11.68 in <br /> * Source: CIMS, California Department of Water Resources(Jan 1988 to Dec 2004) <br /> (www.cimis.water.ca.gov) <br /> ** Assumption: If monthly precipitation exceeds potential ET then <br /> the difference is potential deep percolation. <br /> NEIL O. ANDERSON <br /> AN D ASSOCIATES <br /> Plate 10 <br />