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<br />. <br /> <br />. <br /> <br />NODSIH: John M.. Shafter, "An Interactive River Basin <br />Hanagement Model", Colorado Water Resources Re- <br />search Institute, Colorado State University, 1979. <br />3. Operation Simulation Models <br /> <br />HEC- 3 : <br /> <br />U.s. Army Corps of <br /> <br />Engineers, Hydrologic Research <br />System Analysis for Conserva- <br /> <br />Center, "Reservoir <br />tion", July, 1974. <br />U.s. Army corps of Engineers, Hydrologic Research <br />Center, "Simulation of Flood Control and Conserva- <br />tion Systems", June, 1979. <br />The selection of any of the above models for use in the study <br />of Cache la poudre Basin will depend on perception of the types <br />and complexity of the potential projects, types and extent of <br />available data, and necessary level of detail of analysis required <br />to achieve the degree of accuracy of estimates commensurate with <br />the level of the study. Tne ultimate determination of which of <br />the models to use for the ~tudy will be made in consultation with <br />the CWCB. <br /> <br />HEC-5: <br /> <br />rhe potential use of the surface water hydrologic model <br />developed by the Colorado Water Resources Research Institute at <br />Colorado State University, MODSIM, was evaluated by Tudor through <br />an independent appraisal of the model and discussions with the <br />principal developer of the model. Tudor feels that it would be <br />advantageous to use the model since, 1) Tudor feels it has a <br />built-in quasi-optimization capability based on established mathe- <br />matical procedure, 2) it allegedly enables modeling institutional <br />aspects (water right priorities in particular) better than any <br />other available model), 3) it is interactively executable which <br />facilitates expediting the iterative process to a solution in the <br />simulation method of analysis and in conducting sensitivity analy- <br />ses, and, 4) it has already been calibrated to simulate the Cache <br />la Poudre River Basin which information would be available. Fur- <br />thermore, it is our understanding that MODSIM is interfaced with <br />an interactive data management package which could be of consid- <br />erable use in generating necessary data for potential facility <br /> <br />I-a <br />