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4 <br /> Deep Percolaton of Rain <br /> CIMS Station#70 Manteca, CA **Estimated <br /> *Potential ET *Precipitation Deep Percolation of Rain <br /> Month (in/mo) in/mo (in/mo) <br /> Sep-99 5.08 0.00 <br /> Oct-99 3.48 0.12 <br /> Nov-99 1.38 1.65 0.27 <br /> Dec-99 1.30 0.08 <br /> Jan-00 0.82 3.94 3.12 <br /> Feb-00 1.32 4.72 3.40 <br /> Mar-00 3.79 0.55 <br /> Apr-00 5.11 1.30 <br /> May-00 6.25 0.67 <br /> Jun-00 7.77 0.04 <br /> Jul-00 7.84 0.00 <br /> Aug-00 6.64 0.00 <br /> Subtotal: 50.8 in/yr 13.07 in/yr 6.79 in/yr <br /> * Source: CIMS, California Department of Water Resources. <br /> ** Assumption: If monthly precipitation exceeds potential ET then <br /> the difference is potential deep percolation. <br /> *** Assumption: If monthly precipitation exceeds potential ET then <br /> the difference is potential deep percolation. <br /> t <br /> 4 <br /> i <br /> f <br /> i <br /> NEIL O.ANDERSON&ASSOC.,INC. <br /> (EOTECNNCAL SMV10E8-EMINEMHO LABORATORE6 7F <br /> 22 Housmn Ln.LodF.CA 96290 6 <br /> 17[81 3637-srm 7 Ir <br /> JSQG\ <br /> 'late 2 <br />