Laserfiche WebLink
CFfollowingart illustrates rainfall and evapotranspiration for the Tracy area. Precipitation data <br /> m the Soil Survey of San Joa uin County. The"2 years in 10" data was used and not <br /> fall' data. Evapotranspiration data was obtained from the California Irrigation <br /> ormation System (CMS): <br /> TABLE 4 <br /> PRECIPITATION AND Eto DATA FOR TRACY, CA <br /> Month 2 Years in 10 will have more Eto Average Potential Deep <br /> precipitation than: (in/mo) Percolation (in/mo) <br /> (in/mo) (in/day) <br /> January 2.93 1.55 0.05 1.38 <br /> February 2.21 2.24 0.08 -- <br /> March 2.38 3.72 0.12 <br /> April 1.51 5.10 0.17 <br /> May 0.71 6.82 0.22 <br /> June 2.09 7.80 0.26 - <br /> July 0.28 8.68 0.28 <br /> August 1.05 7.75 0.25 <br /> September 0.84 5.70 0.19 <br /> October 1.06 4.03 0.13 <br /> November 2.10 2.10 0.07 -- <br /> December 2.38 1.55 0.05 0.83 <br /> TOTALS (in.) 13.18 57.0 ------ 2.21 <br /> This chart illustrates that evapotranspiration far exceeds precipitation, even when using higher rainfall <br /> data that exceeds normal rainfall data by 28% (10.33 in. vs. 13.18 in.) Only in the months of <br /> December and January, and possibly November and February would deep percolation potentially <br /> occur. This data illustrates a relatively high potential for there to be significant evapotranspiration(or <br /> bare soil surface evaporation) from the filter bed disposal area. <br /> 10 �j <br /> Chesney Consulting <br />