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** Estimated <br /> *Ave. Eto *Ave. Precip. Deep Perc. <br /> Month (in/mo) (in/mo) (in/mo) <br /> Jan 1.24 3.05 1.81 <br /> Feb 1.96 2.49 0.53 <br /> Mar 3.41 2.17 <br /> Apr 5.10 1.23 <br /> May 6.82 0.44 <br /> Jun 7.80 0.10 <br /> Jul 8.06 0.03 <br /> Aug 7.13 0.04 <br /> Sep 5.40 0.28 <br /> Oct 3.72 0.78 <br /> Nov 1.80 1.89 0.09 <br /> Dec 0.93 2.50 1.57 <br /> Sum: 53.37 inlyr 14.96 intyr 4 intyr <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 /> "44 NEIL O. ANDERSON <br /> A N D A S S O C I A T E S <br /> Plate 9 <br />