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<br />. the cells receiving canal seepage water in order to route the flows diverted from the rivers <br />or reservoirs to the supply areas through the canals. <br /> <br />In addition, a map showing the boundaries of the supply areas, non-supply areas (all area which <br />is not supplied with water), surface reservoirs, ponds, etc. is required. <br /> <br />The input requirement of SAMSON is divided in six sections (Morel-Seytoux and Restrepo, <br />1987): <br /> <br />. General control parameters (control variables and options for a particular execution of the <br />model) <br /> <br />. Physical system information (information that provides the discrete representation of the <br />physical system: information on the saturated aquifer system, parameters for the entire <br />study area and for individual river systems, parameters for each river system <br />configuration, information on the configuration of the river, reservoirs and aquifer supply <br />areas, physical information of pond areas, phreatophyte growth areas for each river <br />configuration, agronomic information for all crops, climatological stations and gaging <br />stations, and boundary conditions for the entire river-aquifer system) <br /> <br />. Allocation information (information on water rights and augmentation plans in the study <br />area) <br /> <br />. Values of the initial state of the system (information for the river reaches, the river <br />diversion and inflow points, the reservoirs, and the climatological stations) <br /> <br />· Daily climatological information during the calculation horizon (temperature, wind <br />velocity, relative humidity, precipitation depth, and precipitation duration) <br /> <br />· Daily historical information during the calculation horizon (daily flow at each river <br />gaging station, at each diversion point in the South Platte, and at each river inflow point; <br />daily surface reservoir information, daily climatological information, daily pumping <br />historical values and daily values for augmentation plans). <br /> <br />The input requirement of GENSAM is the transmissivity and effective porosity of the system. <br />The program GENSAM allows the user to input a specific value of transmissivity and effective <br />porosity for each cell, or to input constant values that will be used for each cell. If the system has <br />constant transmissivity, only one value is required (Morel-Seytoux and Restrepo, 1987). <br /> <br />The data requirements for SAMSON are summarized as follows: <br /> <br />. <br /> <br />Number of cells: 1678 (size lmile x lmile; 1609 meters x 1609 meters) <br />Number of diversion points along the South Platte River system: 80 <br />Number of reaches in the South Platte River: 336 <br /> <br />. <br /> <br />. <br /> <br />10 <br />