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streamline command file preparation for selected individual packages. Full automation to <br />execute all of the individual packages is not recommended during Phase 3, since this process <br />must remain flexible while the model is being developed and calibrated. This program will be <br />modified to incorporate into the workflow any new packages that are developed along with <br />modifications to existing packages, and to generate an overall log file for operations. It is <br />anticipated that operation of most programs external to GMS will be controlled from this <br />application. Functions that are currently provided by programs StateCU and StateDGI will not <br />be included within the revisions to program ModGUI. <br />The second major area recommended for revision and enhancement is that of stress-related <br />information for recharge, evapotranspiration, wells and drains. These currently are prepared <br />using programs StateDGI, StateCU and StatePP, as documented in the Task 50.1 TM. <br />Modification of both programs StateDGI and StatePP are recommended. The program <br />StateDGI matches GIS coverages for stress-related features and information from the <br />groundwater model, including the computational grid and layer elevations. This processed <br />information is used in the program StatePP, along with files from program StateCU that are <br />post-processed by program AGG to prepare the simulation files for the recharge, <br />evapotranspiration, well and drain packages. This process will require modification, since <br />modeling for the SPDSS will utilize the new USGS packages for wells and evapotranspiration <br />that will modify the approach that is currently implemented in the pre-processor packages. In <br />addition, the program StateDGI is currently coded in the Avenue scripting language, which is <br />no longer supported in current versions of ArcGIS that are utilized by the State and so needs to <br />be converted into a supported language. Program StateDGI, as it currently exists, must be run <br />each time a change is made to the model grid since much of the work done in this tool matches <br />information to the individual model grid cells. The processing in StateDGI can be streamlined <br />since layer elevation data will no longer be necessary as this function is now done internally <br />within MODFLOW-2000 using the multi-node well (MNW) package, recommended for use in <br />the SPDSS. Other functions provided by StateDGI and StatePP will be maintained to ensure <br />compatibility with water budget elements computed by StateCU. The program StateDGI <br />should be migrated to a currently supported scripting language, and be simplified to consider <br />that the MNW package for wells will no longer require the processing of layer elevations in this <br />package. Program StatePP will also need to be modified to prepare the revised format input <br />files for the MNW package. <br />The third area for revision and enhancement is associated with preparation of stream package <br />files. The recently released USGS stream flow routing (SFR) package will be used in the SPDSS <br />modeling effort. The input files for the SFR package differ from the previous package used by <br />the State, thus modifications to the current processes will be required. The internal capabilities <br />of the recommended modeling GUI (see Section 3.0), in combination with a new software <br />package that is recommended for development under the SPDSS will be used to generate the <br />stream flow routing package files. Currently, a series of programs (programs mkstr, mkq, build <br />and ModEx) that contain features specific to the RGDSS are used to prepare these files. These <br />programs are not suitable for direct use in the SPDSS, however, design features of these <br />programs will be preserved and potentially used for processing that is not done internally <br />within the modeling GUI. <br />