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headgate. Using the proper demandts command line options, the *.ddh file is generated using <br />the watright output file, *.dds. A typical command line is shown below: <br />demandts -diversions -sstatemod watright.dds -ostatemod demandts.ddh <br />Several options are available to the user for data filling and replacing the database time series <br />with one from another source. <br />Up to three demand files (*.ddm) were created for use in calibration and baseline data <br />development. The historic demand file assumes that demands equal historic diversions. The <br />calculated demand file assumes that demands are a function of acreage, crop mix, and climate. <br />The baseline demand is similar to the calculated, but allows current conditions to be reflected <br />over time. All three were created using the demandts DMI. <br />The historic demand file is generated using the same type of command line as illustrated to <br />create the *.ddh file. <br />A typical command line to construct the calculated and baseline demand files is illustrated <br />below: <br />demandts -demands -istatemod=demandts.ddh -icu=basin.ddc -sstatemod <br />watright.dds -ostatemod demandts.ddm <br />Here, the historic diversion and consumptive use files are used as inputs into demandts to <br />generate the demand file. <br />The file estimating consumptive use of the diversion structure's crops per month (*.ddc) is <br />generated by the demand_cu DMI utility. This utility requires several input files generated by <br />other consumptive use DMI utilities discussed in the Consumptive Use chapter of this manual. <br />During this process, the watright.dds file is edited to change the diversion efficiencies from an <br />annual to monthly estimates. This editing is done on those structures for which a portion of their <br />diversions are consumptively used (e.g., irrigation practices, industrial processes, etc.). While <br />demandts creates a header for the *.dda file, the annual time series for these diversion structures <br />must be created manually. Refer to the watright documentation for more details concerning the <br />creation of StateMod input files for diversion time series. <br />2.4 Reservoir Files <br />StateMod requires five reservoir files: the reservoir station file (*.res), the reservoir right file <br />(*.rer), the reservoir end-of--month content file (*.eom), the reservoir target content file (*. tar), <br />and the evaporation data file (*.eva). Similar to the diversion station and water right files, the <br />watright DMI utility produces the reservoir station and water right files. The reservoir station <br />file includes physical characteristics of the reservoir, including maximum capacity, maximum <br />release, an area-capacity curve, reservoir sub-accounts, and an evaporation pattern. A typical <br />watright command line used to produce these two files is shown below: <br />