INTEGRATION OF DATA USING GIS AND STATEPP TO ESTIMATE GROUNDWATER MODEL INPUT PARAMETERS

摘要

The State of Colorado is developing the Colorado Decision Support System as a management system for surface water and groundwater resources. The Rio Grande Decision Support System (RGDSS) includes a ground-water model of the San Luis Valley in southern Colorado as one of the modeling components. Data sources used to create the ground-water model input files include results from a consumptive-use model and a surface-water model. GIS data of land use, vegetation distribution, and rim inflow areas, surface water flow and diversion data, rim inflow recharge estimates, and precipitation data are used to estimate model parameters. A preprocessing program, STATEPP, has been developed to integrate these data and create ground-water model input files. The data centered approach used in RGDSS results in continuity of data among the models (consumptive use, surface water, and ground water) and allows for easy generation of new input files when data are updated.