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<br /> <br />2-E <br /> <br />PACIFIC SOurHWEST ml'ER-AGENCY ca.lMI'l'rEE <br /> <br />EVAl'O'l'~SPIRATICfi--The process by which water is transpired by pJ..e.nts, <br />added to pJ..e.nt tissue, e.tld evaporated fran the pJ..e.nt and surrounding <br />surfaces. Quantitatively, it is usually expressed in depth of water <br />in a specified period of time. <br /> <br />EXCEI!:llANCE IN'l'ERVAL--The average number of' years between the occurrence of <br />a given event and a still greater event. <br /> <br />EXCLUSIVE FLOOD CONTROL CAPACITY--Tha.t reservoir s:pe.ce which is used for <br />the sole purpose of reguJ.e.ting flood inflows to reduce flood ds.xnage <br />downstream. <br />