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-Mr. John Parks <br /> Page 6 <br /> Potential Deep Percolation of Rain for Lodi, CA <br /> Percolation and Evapotranspiration (ET) <br /> CIMS Station #42 Lodi, CA ***Calculated <br /> " Potential ET * Precipitation PotentialDeep Percolation of Rain <br /> Month (in/mo) (in/mo) (in/mo) <br /> Apr-98 4.02 1.69 <br /> May-98 4.31 3.31 <br /> Jun-98 6.48 0.16 <br /> Jul-98 7.72 0.00 <br /> Aug-98 7.03 0.00 <br /> Sep-98 4.72 0.04 <br /> Oct-98 3.14 0.98 <br /> Nov-98 0.96 3.46 2.50 <br /> Dec-98 0.83 0.67 <br />[ Jan-99 0.43 3.31 2.88 <br /> ff Feb-99 1.16 4.09 2.93 <br /> Mar-99 2.82 1.22 <br /> Subtotal: 18.93 in/yr 8.31 in/yr. <br /> Average 1948-87 at Lodi, CA. *** Calculated <br /> * Potential ET ** Precipitation PotentialDeep Percolation of Rain <br /> Month (in/mo) (in/mo) (in/mo) <br /> Apr 4.02 1.48 <br /> May 4.31 0.37 <br /> .tun 6.48 0.13 <br /> Jul 7.72 0.06 <br /> Aug 7.03 0.06 <br /> Sep 4.72 0.35 <br /> Oct 3.14 0.86 <br /> Nov 0.96 2.42 1.46 <br /> Dec 0.83 2.93 2.10 <br /> Jan 0.43 3.34 2.91 <br /> Feb 1.16 2.55 1.39 <br /> Mar 2.82 2.61 <br /> Subtotal. 17.16 in/yr 7.86 in/yr <br /> " Source: CIMS, California Department of Water Resources. <br /> *+ Source: USDA Soil Conservation Service, San Joaquin County, CA. <br /> ** Assumption: If monthly precipitation exceeds potential ET then <br /> the difference is potential deep percolation. <br /> Note runoff is not accounted for here. <br /> r� <br /> +I <br /> 1 <br /> k <br /> r L <br />