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Worksheet No. 1 <br /> Potential <br /> Deep Percolation of Rain <br /> �� �,U�P�T��'�rPBr►oA1 <br /> CIMS Station#70 Manteca)San Joaquin County Potential <br /> "Potential ET *Precipitation Deep Percolation of Rain <br /> FMonth (in/mo) (in/mo) (in/mo) <br /> Sep-98 4.61 0.00 <br /> Oct-98 3.17 1.06 <br /> I Nov-98 1.30 2.09 0.79 <br /> Dec-98 1 Al 0.43 <br /> Jan-99 0.66 3.11 2.45 <br /> Feb-99 1.50 2.80 1.30 <br /> Mar-99 3.11 0.87 <br /> Apr-99 5.16 0.98 <br /> May-99 6.93 0.20 <br /> Jun-99 7.53 0.04 <br /> Jul-99 7.72 0.00 <br /> Aug-99 6.48 0.00 <br /> Subtotal: 11.58 in/yr 4.54 in/yr <br /> FSource: CIMS, Califomia Department of Water Resources. <br /> 4 <br /> **Assumption: If monthly precipitation exceeds potential ET then <br /> the difference is potential deep percolation. <br /> Assume 2 inches of runoff. ' <br /> Potential Percolation- Estimated Runoff= Deep percolation of rain <br /> 4.54 in -2 in = 2.54 in <br /> F, <br /> F <br /> F, <br /> o"(Sl NEIL O.ANDERSON A ASSOC.,INC.22F,3UftMLftLG&CA 01M A. <br /> CE01ECHMCAL SEWCES-EI[-]NE WG LODOMTON64 <br /> f la1;e 8 <br />