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Deliverables: Memo summarizing the approaches as well as steps in creating the various input files and <br /> results. Graphs of the Clark gage flows will be presented for each model. This memo will also mention <br /> the execution times for each approach. <br /> Task 3—Develop user documentation on "pro's and con's" of daily models <br /> Purpose: There are numerous pros and cons with developing a daily simulation model. The objective of <br /> this subtask will be to prepare a memorandum that can be incorporated in the CDSS documentation, to <br /> educate users on major issues associated with daily modeling. <br /> Approach: Develop a memorandum that discusses, at a minimum, <br /> • daily vs monthly diversions during a rising, falling and steady hydrograph, <br /> • daily vs. monthly data availablitly <br /> • daily vs. monthly data filling, <br /> • daily vs. monthly routing, <br /> • daily vs. modeling return flows, <br /> • daily vs. monthly reservoir operations <br /> Deliverables: Memorandum as described above, expected to contain approximately 2 figures and 10 <br /> pages of text. <br /> Task 4—Recommend approach for basinwide model <br /> Purpose: Determine scope and budget for basinwide daily model. <br /> Approach: Considering experience and results of Task 2 and input from the State, recommend an <br /> approach for developing a daily model of the entire Yampa basin. Choice of approach should consider <br /> execution time and data management issues (e.g., file sizes) for the daily model. For example, it should <br /> recognize the need to fill historical gage and/or diversion data, as applicable, in the basin outside the <br /> pilot area. Need for modifying CDSS tools (potentially Statemod output requirements, Mixed Station <br /> model, or DMI's) should be identified. Work tasks will be outlined for the selected approach and <br /> development cost of the basinwide daily model will be estimated. <br /> Deliverable: Draft and final memos describing selected approach to a basinwide daily model, and <br /> rationale for approach. Memo shall include description of work tasks, and estimated budget and <br /> schedule if these tasks are to be completed by Boyle. Elements that Boyle cannot execute because they <br /> lie outside of Boyle's expertise or authority, will be itemized, although detailed descriptions thereof will <br /> not be included. <br /> Task 5—Develop basinwide Yampa model for 1909-1996 <br /> Purpose: Develop a daily simulation model for the extended historical period. <br /> Approach: This task will be undertaken only after written authorization from the State,based on <br /> conclusions of Task 4. In accordance with the scope and budget developed in Task 4,prepare the <br /> basinwide Yampa model. Calibration will focus on alterations made from the monthly model, for <br /> example, adjustments to patterns selected to disaggregate from monthly to daily. <br />