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Summary and Conclusions <br />Based on working sessions with State personnel, four major areas have been identified for <br />enhancement of the existing data centered modeling process, namely: <br />^ Workflow management <br />^ Preparation of stress-related model files <br />^ Preparation of stream flow routing model files <br />^ Model calibration process <br />These recommended enhancements include incorporation of more automation and <br />documentation capabilities for managing both model input preparation and post-processing of <br />model output. The first of these recommended enhancements is modification of the existing <br />workflow GUI (ModGUI) that has been developed for the RGDSS. The second area of <br />enhancement will require modifications to the programs StateDGI and StatePP to accommodate <br />the current MODFLOW packages that will be used in the process will also be required. The <br />third area modify the current process used for preparing streamflow routing package input <br />files, since the new USGS streamflow package (SFR) will be used for the SPDSS, and many of <br />the current processing packages are specific to the RGDSS. The internal capabilities of GMS, <br />along with a new program developed as part of the SPDSS to modify the files generated in GMS <br />and to be compatible with the SFR package are recommended. The fourth area includes <br />enhancements to the model calibration process, including addition of the public domain <br />program, PEST to the suite of modeling tools for the SPDSS. The calibration process should <br />remain flexible, with potentially use of a combination of approaches, depending on the <br />parameter, that may include explicitly defined zones, use of internal MODFLOW-2000 tools or <br />PEST. <br />The capabilities of three candidate modeling GUI packages were considered and GMS is <br />recommended as the most appropriate package for selection for the SPDSS. <br />Recommendations <br />The following are recommendations based on the work completed under Task 50.2: <br />• Select GMS as the primary modeling GUI. <br />• Enhance the existing workflow GUI (program ModGUI) to incorporate the recommended <br />processing packages and increase the degree of automation and documentation capabilities. <br />