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<br />, <br />~, " <br /> <br />o 0 u 'i 'lB <br />.. <br /> <br />RSS Concepts and Methodology <br /> <br />.. <br /> <br />POLICY sumsto TO DETERMINE sum_storage FOR ResDOWN <br /> <br />BEGIN <br /> <br />sum_storage = ResUp.Beginning_storage <br />+ ResDown.Beginning_storage <br /> <br />END <br /> <br />POLICY resrel TO DETERMINE Outflow FOR ResDown <br />BEGIN <br /> <br />IF sum_storage <br />THEN Outflow = 0.3 x (sum_storage) <br /> <br />END <br /> <br />FIGURE 2. General Format of the Policy Statements used in the RSS Program <br /> <br />statements, and to include predefined functions where appropriate, Additional <br />information concerning the writing of policy statements is contained in Chapter 2 <br />of this manual. . <br /> <br />1.4 Mass Balance Operations <br /> <br />Each of the Water-class objects solves a mass-balance equation each time the <br />object performs ijs operations. To do this, the object must have, or be able to <br />compute, the beginning and ending storage volumes, inflow_1 and inflow_ 2, <br />the diversion and consumption fractions, the losses from evaporation, changes <br />in bank storage. and the remaining outflow; as applicable. <br /> <br />ending storage = beginning storage + inflow_l + inflow_2 + bank slorage <br />- consumption' diversion - evaporalion - outflow. (EQ 1) <br /> <br />The initial and final storage volumes cannot exceed the live capacity or be <br />smaller than the inactive capacity: <br /> <br />inactive capacity <= storage volume <= live capacity <br /> <br />RSS Concepts and Methodology <br /> <br />7 <br />