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<br />000290 <br /> <br />shortage. . A variable use pattern is used to provide water <br />demand above and below schedule. <br />Regulated and Depleted Runoff above Powell - Natural runoff above <br />Powell adjusted for use, Upper Reservoirs evaporation, and <br />change in storage of the reservoirs above Powell. <br />Scheduled Objective Release - For Lake Powell the objective <br />release is 8.23 maf which when added to the average flow of <br />the paria River will provide half of Mexico's 1.5 maf <br />delivery and 7.5 maf to the Lower Basin. Lake Mead's <br />objective release is the sum of downstream uses minus the <br />downstream gains. These objective releases may be modified <br />by Powell and Mead equalization, flood control or a <br />surplus/shortage declaration below Mead. <br />SMDD - A CRSS utility computer program for taking scheduled uses <br />by diversion point and return point and writing reports used <br />by CRSS. In the Upper Basin uses in EZ are summed for those <br />above Glen Canyon Dam. In the Lower Basin, apportioned uses <br />are summed as SNWS, CAP, MWD, other Nevada, other Arizona, <br />and other California. System uses not apportioned such as <br />phreatophytes and tributary uses are summed as above and <br />below Hoover. <br />Storage Change-Runoff Relation - A relation between depleted <br />runoff above Powell and storage change used to determine <br />maximum change in storage of the Upper Reservoirs above <br />Powell. <br />System Use - In the Lower Basin, identified water depletions <br />caused by reservoir evaporation, phreatophytes, desalting <br />bypass, and uses on tributaries are not charged against the <br />Lower Basin apportionment and are termed system uses. <br />Other, unidentified uses are incorporated in the hydrology <br />database of gains and losses. In the Upper Basin, all <br />identified water depletions are charged to the Upper Basin <br />apportionment. <br />Target Space - Storage space required by flood control <br />regulations. <br />Upper Reservoirs - Reservoirs above Powell that are operated as <br />one reservoir in EZ and are Duchesne River, Taylor Park, <br />Blue Mesa, Morrow Point, Crystal, Fontenelle, Flaming Gorge, <br />and Navajo reservoirs. Morrow Point and Crystal usually <br />have the same end of year contents of 134 kaf and so their <br />starting contents are omitted from the EZ starting contents <br />input form but their contents are included in the <br />simulation. <br /> <br />ii <br />