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Precipitation and ETo for North Stockton, CA <br /> Estimated <br /> Ave. Etc* Ave. Precip.** Deep Perc.*** <br /> Month (in/mo) (in/mo) (in/mo) <br /> Jan 1.24 3.24 2.00 <br /> Feb 1.96 2.70 0.74 <br /> Mar 3.41 2.29 <br /> Apr 5.10 1.33 <br /> May 6.82 0.47 <br /> Jun 7.80 0.11 <br /> Jul 8.06 0.03 <br /> Aug 7.13 0.04 <br /> Sep 5.40 0.28 <br /> Oct 3.72 0.83 <br /> Nov 1.80 1.97 0.17 <br /> Dec 0.93 2.69 1.76 <br /> Sum: 53.37 in/yr 15.98 in/yr 67 in/yr 1 <br /> * Source: California Irrigation Management Information Systems(Zone 12) <br /> (www.cimis.water.ca.gov) <br /> ** Source: Western Regional Climate Center(Station 048560)Jul 1948 to Sept 2004 <br /> (http://www.wrcc.dri.edu/) <br /> *** Assumption: If monthly precipitation exceeds potential ET then <br /> the difference is potential deep percolation. <br /> s <br /> r. <br /> NEIL O. ANDERSON <br /> AN D ASSOCIATES <br /> Plate 9 <br />