Laserfiche WebLink
This memorandum includes a proposed workflow for the recommended design, showing the <br />linkage between data sources and the groundwater model. DMI programs that facilitate each of <br />the steps are identified, along with enhancements that are proposed for each one. Anew DMI <br />is necessary to replace the capability for data centered management of stream information, and <br />the specifications for this DMI are provided. The design of the enhancements is intended to be <br />flexible in order to provide a useable system to facilitate efficient modeling operations for the <br />SPDSS and potentially other groundwater basins in Colorado. This flexibility will be <br />incorporated by using prototyping approaches to code development, with feedback from the <br />State model users at periodic review meetings used to refine the design of new or modified <br />DMIs. All elements of the enhanced process will be designed to be self-documenting through <br />the use of reusable command files and log files, to the degree feasible. Management of most <br />DMIs will be facilitated through use of the current State developed program ModGUI, with <br />modifications. The proposed development activities are described in sufficient detail to allow <br />estimation of the cost and schedule to implement. No process enhancements are proposed for <br />water budget components that are provided by the Consumptive Use task; these elements are <br />not repeated in this memorandum, since they are available in the Task 50.1 report. <br />Figure 1 provides a graphical representation of the overall workflow for the enhanced data <br />centered modeling process. This workflow is organized in a sequential manner, generally <br />showing the procession from data sources to model input files used in simulations. Processes <br />and DMIs that require little or no development time are shown with the blue stipple <br />background on this figure, while those processes that will require creation or significant <br />development or modification of tools are shown with the red stipple pattern. The green stipple <br />pattern shows those processes that are included in the consumptive use task being implemented <br />by other entities. <br />Basic source data resides either in HydroBase or in the State GIS repository. Anew <br />intermediate set of GIS coverages is included in this design, as shown in the Modeling GIS <br />Repository box on Figure 1. These GIS coverages provide information specific to the <br />groundwater modeling effort that is not maintained in HydroBase or the State GIS repository. <br />Estimated control points for data sets that require supplemental information to effectively <br />interpolate values will be maintained in the Modeling GIS Repository. These estimated control <br />points are anticipated for layer elevations, aquifer properties and water levels. Other coverages <br />will be added as needed if other parameters require estimated control points during the model <br />development or calibration process. The estimated points will be combined with measured <br />data residing in HydroBase that is flagged as useable, and these data will be imported into <br />GMS. Stream-related information will also be maintained in the Modeling GIS Repository, <br />since HydroBase does not provide fields for some modeling specific information, such as <br />channel cross-sections. Some one-time modifications to stream information from the State GIS <br />repository will be required to establish stream segments and associate stream geometry and <br />other parameters with these segments. Information for model extent, model layering and layer <br />elevations, initial aquifer properties and external boundary conditions will be maintained in <br />GMS in agrid-independent form. Stream information will be migrated to GMS for display, <br />however; processing and generation of the package files will occur in the new DMI. <br />