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Metropolitan Water Supply Investigation Proposal Hydrosphere, Inc. Septmber 17, 1993 Page 53 The level of detail to be incorporated in the Study model with regard to time step, disaggregation of water rights, etc., will be commensurate with the Study's needs and the anticipated role of Denver's modeling and planning study. It is anticipated that the MWSI Project's model will provide a preliminary and exploratory modeling capability, and that promising alternatives will be "proven out" through subsequent efforts by others, such as Denver. The specification will address various modeling requirements including geographic coverage; level of disaggregation in representation of water rights, facilities, demands and diversions; the ability to both separately track and "label" water rights and use and to allow for shared and integrated operations of those features; etc. Regardless of which path towards model development is selected, it is not anticipated that an elaborate model user interface will be specified. The primary purpose of the MWSI Project is to investigate system integration water supply options and not to develop a full computer-based metro Denver water supply planning decision support system. However, the model will ultimately be publicly available and thus an interface which allows easy input modification and output viewing will be necessary. The model specification process will involve two meetings with TSC to review I) an initial model wish list, and 2) a draft model specification. Linkages With Other Tasks This task relies on all of the previous tasks, especially task 4, "Inventory of Existing Information and Tools", and tasks 5-8, the special studies on the known integration opportunities. The results of this task will provide the guidelines for Model Development in Task 10. Likely Sources of Information To Be Used Documents produced in tasks 4 through 8 will be useful for this task, along with considerable input from the TSC to specifically define ihe functional requirement of the model. In addition, information provided by Denver relating to its on-going modeling effort will be valuable. Anticipated Problems The model design will have to carefully balance the need for accurate, applicable modeling results with a finite budget, short development period, and flexibility to model many different options. Given these development constraints, an appropriate level of detail and geographical scope will have to be selected. It is likely that some desired but not absolutely necessary features will have to be left out of the functional specification. Deliverables A model jUncrional specification memo detailing model requirements including analytical capabilities, user interface expectations, hardware operating requirements, and expected costs. This memo will focus on what the model will be expected to do, not on the implementation details.