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Month <br />Precipitation and ETo for Manteca, CA <br />** Estimated <br />*Ave. Eto *Ave. Precip. Deep Perc. <br />(in/mo) (in/mo) (in/mo) <br />Jan 1.09 2.73 1.64 <br />Feb 1.90 1.99 0.09 <br />Mar 3.54 1.75 <br />Apr 5.02 1.05 <br />May 6.76 0.51 <br />Jun 7.61 0.11 <br />Jul 8.01 0.02 <br />Aug 7.10 0.02 <br />Sep 5.22 0.13 <br />Oct 3.43 0.65 <br />Nov 1.68 1.29 <br />Dec 1.06 2.07 1.01 <br />Sum: 52.42 in/yr 12.32 in/yr 2.74 in/yr <br />* Source: CMS, California Department of Water Resources (Jan 1988 to Dec 2018) Station 70 <br />(www.cimis.water.ca.gov) <br />** Assumption: If monthly precipitation exceeds potential ET then <br />the difference is potential deep percolation. <br />Opetra log ix <br />geophysics - environmental - geology <br />..vww.petraloriix.corn <br />Plate 8