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<br />(j 0 ~13j 4 <br /> <br />original scheduled use. Banks are used to offset shortages. <br /> <br />Short by Capacity from File: This shortage method is to develop <br />annual shortage triggers based on Mead capacities outside the <br />model and read them in from a file. <br /> <br />Powell Reservoir Balance: <br /> <br />Step 10. Release from Powell is set to the objective release. On <br />the first iteration the objective release is read from the user <br />interface, default is 8,230 kaf. Subsequent iterations may set <br />the release to prevent excess to Mexico or for Mead equalization. <br /> <br />The actual regulated and depleted inflow to Powell is balanced <br />with the objective release, evaporation, and change in storage. <br />Evaporation is 3.96 feet times the average of the beginning and <br />ending surface area., Shoreline bank storage is computed as 8% of <br />storage change. Usually, balance is achieved in2 'or 3 <br />iterations. <br /> <br />If release is greater than the objective release then the <br />difference is put in the Upper reservoir up to its maximum <br />capacity, Powell is full. If release is below the objective <br />release then the difference is gotten from the Upper reservoir up <br />to is minimum capacity, Powell is empty. Upper basin use is not <br />shorted to meet either 75 maf/10 years or the 8.23 maf minimum <br />objective release. <br /> <br />Mead Reservoir Balance: <br /> <br />Step 11. Gains above Hoover are combined with Glen release. <br />System use above Hoover and SNWS pumping are removed. Mead <br />release is set to the objective release computed above which <br />includes surplus, shortage, and Mexico excess if any. The <br />depleted inflow is balanced with the objective release, <br />evaporation, and change in storage. Evaporation is 6.5 feet <br />times the average of the beginning and ending surface area. Bank <br />storage is computed as 6.5% of storage change. <br /> <br />If Hoover release is less than objective then increase shortage <br />to CAP and SNWS by difference and rerun Mead balance at step 11 <br />with new objective release, Mead is empty. If release is greater <br />than objective, then deduct spill from Powell objective release <br />and rerun balance starting at Powell step 10 if Powell is not <br />full, Mead is full. <br /> <br />602a Upper Basin Storage Requirement: <br /> <br />If Powell contents is greater than Mead then 602a storage <br />requirement is computed as 12*pminr+pminc+use12-crit12+evap-uc <br />where pminr is Powell minimum objective release, pminc is Powell <br />minimum contents target, use12 is the next 12 years of Upper <br /> <br />10 <br />