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<br />. <br /> <br />~.. <br />.... <br />.c... <br />...r::.. <br /> <br />SPECIAL STUDIES (continued) <br /> <br />(1) Input Data Files (Data Base) <br />(a) Demand Data File <br />(b) Hydrology Data File <br />(c) Control File <br />(2) Programs to Process the Input Data File <br />(a) SMDID - Processes the Demand Data File <br />(b) EMHYDRO - Processes and Updates the Hydrology Data File <br />(3) Logic Model, Colorado River Simulation Model (CRSM) <br />(4) Output Format Program (TAPED IT) <br /> <br />b. INPUT DATA FILES (DATA BASE) <br /> <br />(1) Demand Data File <br /> <br />This file contains information regarding withdrawals and depletions of <br />water from the river. Data are entered in an ordered format which reflects <br />the physical location of the various water demands on the river. Actual <br />data elements are listed below: <br /> <br /> (a) Withdrawals for a given user at a demand point. <br /> (b) Depletions and return fl ows . <br /> (c) Lag time, in months, for return flow. <br />. (d) Year of withdrawal and depletion. <br />(e) Salt pickup. <br /> (f) Reach and sequence point for withdrawal. <br /> (g) Reach and sequence point for return flow. <br /> <br />(2) Hydrology Data File <br /> <br />The hydrology data file contains calculated natural flow and salt <br />records from 1906 to 1978. The data for this file were developed from <br />historical stream flow records, cropped acreages, evaporation calculations <br />for the reservoirs and recorded diversions and return flows. <br /> <br />There are several assumptions that were made in developing this data <br />base. These assumptions are listed below: <br /> <br />(a) Recorded flows are accurate. <br />(b) Diversions and acreages are recorded or can be estimated within <br />reasonable limits. <br />(c) Consumptive use and reservoir evaporation are computable within <br />reasonable limits. <br />(d) Return flows may be lagged, routed, and attenuated. <br />(e) The remaining residuals can be explained by other hydrologic <br />parameters such as precipitation) bank storage, or ground water inflows. <br /> <br />(3) Control File <br /> <br />. <br /> <br />The control <br />operations data. <br />the following: <br /> <br />file contains reservoir operations data and powerplant <br />Data are entered in the form of polynomial equations for <br /> <br />107 <br />