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Precipitation and ETo for Stockton Area, CA <br /> ** Estimated <br /> *Ave. Eto *Ave. Precip. Deep Perc. <br /> Month (in/mo) (in/mo) (in/mo) <br /> Jan 1.08 2.73 1.65 <br /> Feb 1.91 2.01 0.10 <br /> Mar 3.52 1.77 <br /> Apr 4.99 1.09 <br /> May 6.74 0.48 <br /> Jun 7.62 0.10 <br /> Jul 8.02 0.01 <br /> Aug 7.05 0.02 <br /> Sep 5.24 0.12 <br /> Oct 3.45 0.70 <br /> Nov 1.67 1.27 <br /> Dec 1.08 1.97 0.89 <br /> Sum: <br /> (in/yr) 52.36 12.29 2.64 <br /> * Source: CIMIS-California Irrigation Management Information System(www.cimis.water.ca.gov) <br /> (Holt Station 248 and Manteca Station 070, 1987 to 2018) <br /> Assumption: If monthly precipitation exceeds potential ET then <br /> the difference is potential deep percolation. <br /> Irerracon <br />