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Riverside Reservoir and Land Company Riverside Irrigation District Farmers State Bank of Brush Case No. 90-CW-189 Page 14 particular pond is observed to be totally dry for an extended period of time. D. Evaporation/Evapotranspiration Losses. Of the total amount of water delivered to each pond, a certain amount will be lost to the atmosphere through evaporation. Additional- ly, a certain amount may also be lost due to evapotranspiration by vegetation in close proximity to the recharge sites. The rate of evaporation will be estimated according to the average daily values for each month as set forth in the following Table: Daily Evaporation Rates (acre-feet per acre) January 0.00282 July 0.01610 February 0.00503 August 0.01683 March 0.00495 September 0.01100 April 0.00889 October 0.00906 May 0.00610 November 0.00306 June 0.01467 December 0.00202 In addition to the evaporation losses from the exposed water surface, there may be increased evapotranspiration from vegeta- tion in the recharge areas. The exact nature and quantity of these evapotranspiration losses cannot be determined without extensive field surveys. Further, the evapotranspiration rates of various native vegetation species have not been quantified by researchers. Thus, for the purposes of administering this recharge project, it will be assumed that evaporation will occur at the rates described in the table above, over the entire maximum surface area of each recharge site, anytime there is water visible on the surface of the site. This overestimation of water surface evaporation will more than compensate for the losses attributable to evapotranspiration. E. Net Recharoe. Net recharge to the aquifer above the Bank property will be calculated according to the following formula: R~ = L x F / 100 R~ = Recharge above Bank property L = Loss percentage = 95~ for flows less than 10.0 cfs = 25~ for flows greater than or equal to 10.0 cfs