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PreciP station and ETo for Y, <br /> West Trac CA <br /> *** Estimated <br />` *Ave. Eta *Ave. Precip. Deep Perc. <br /> Month in/mo in/mo in/mo <br /> Jan 1.24 2.63 1.39 <br /> Feb 1.96 2.16 0.20 <br /> i + Mar 3.41 1.59 <br /> Apr 5.10 0.80 <br /> May 6.82 0.39 <br /> d Jun 7.80 0.11 <br /> — Jul 8.06 0.03 <br /> 4 Aug 7.13 0.07 <br /> Sep 5.40 0.25 <br /> Oct 3.72 0.63 <br /> Nov 1.80 1.66 <br /> Dec0.93 1.86 0.93 <br /> } ' Sum: 53,37 in/yr 12.18 in/yr 2.52 in/yr <br /> * n 12 <br /> Source: California Irrigation Management Information Systems(Zoe ) <br /> (www.cimis water.ca.gov) <br /> Source: Western Regional Climate Center(Station 049001)Feb 1955 to Sept 2009 <br /> r (http://Ww .w.wrcc.dri.edu/) <br /> Assumption: If monthlyprecipitationexceeds potentialETthen <br /> the difference is potential deep percolation. <br /> a <br /> �i <br /> �j <br /> z� <br /> 1 . <br /> NEIL O. ANDERSON <br /> AN D ASSOCIATES <br /> Plate 5 <br />