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Background: <br />The SPMAP CU model has been developed by Colorado State University (CSU) with input and <br />guidance from water users in the lower South Platte River basin, including NCWCD and the <br />State of Colorado, as part of the SPMAP modeling package. SPMAP CU was developed by <br />starting with the same Fortran program used for CRDSS in 1996 and RGDSS in 1999. The focus <br />of the SPMAP CU model has been the estimation of real-time crop consumptive use and <br />associated augmentation requirements by irrigation field(s) while the focus of StateCU is to <br />estimate basin-wide consumptive use by ditch system. The SPMAP CU model offers many of <br />the same analysis options as StateCU, however, both the SPMAP CU model and StateCU offer <br />unique analysis features. Therefore, it is appropriate that both tools remain operational for basin <br />users, produce results that are easily compared, and use consistent input data wherever <br />appropriate. <br />Objective: <br />Review the documentation developed by Colorado State University for Northern Colorado Water <br />Conservancy District's decision support system, South Platte Mapping and Analysis Program <br />(SPMAP). Enhance the existing technical memoranda developed under the SPDSS Feasibility <br />Study that summarizes and compares SPMAP CU to StateCU. Develop an approach to insure <br />the SPDSS development will allow both tools to coexist and remain operational for basin users, <br />have results that are easily compared, and use consistent input data. Compare SPMAP and <br />StateCU estimates for five (5) representative crops at three representative climate stations over <br />the SPDSS study period. <br />Approach: <br />62.1 Review the SPMAP CU documentation and functionality. Initiate approximately five (5) <br />discussions, by phone, with SPMAP CU users to determine specific uses for the model. <br />Meet with SPMAP developers in a half-day meeting or attend an SPMAP development <br />meeting to discuss potential enhancements to both models. Compare SPMAP and <br />StateCU estimates for approximately five (5) representative crops at three (3) <br />representative climate stations over the SPDSS study period. <br />Deliverables: <br />62.1 An enhanced technical memorandum describing the SPMAP CU features, based on the <br />comparison that was developed as part of the SPDSS Feasibility Study. Compare SPMAP <br />and StateCU estimates for approximately five (5) representative crops at three (3) <br />representative climate stations over the SPDSS study period. Recommend enhancements <br />to StateCU and/or SPMAP and/or CDSS data management interfaces that will allow both <br />CU models to remain operational, generate results that are comparable, and use similar <br />input data. Estimate the expected level of programming effort to incorporate the <br />additions, if any, to StateCU. Note that any recommended enhancement to SPMAP CU <br />are expected to be addressed by the SPMAP CU developers as appropriate and will not <br />be scoped under this task. <br />Task 76 -Phases 1 and 2 StateCU Enhancements <br />Background: <br />SPDSS Consumptive Use and Water Budget Component 15 <br />