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Last modified
9/25/2011 10:18:56 AM
Creation date
7/15/2008 11:12:46 AM
Metadata
Fields
Template:
Decision Support Systems
Title
White River Basin Water Resource Planning Model
Decision Support - Doc Type
Report
Date
3/30/1999
DSS
Colorado River
Basin
Yampa/White/Green
Contract/PO #
C153933, C154062
Bill Number
SB92-87, HB93-1273, SB94-029, HB95-1155, SB96-153, HB97-008
Prepared By
Riverside Technology, Inc.
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3.0 MODEL DEVELOPMENT <br />The White River Basin Model was developed jointly by two agencies, the Colorado Water <br />Conservation Board (CWCB) and the Division of Water Resources (DWR), as part of the Colorado <br />River Decision Support System (CROSS). The objective of the model was to develop a monthly <br />water allocation and accounting model. Which would be capable of making comparative analyses for <br />the assessment of historic and future water management policies. Typical comparative analyses for <br />which the model is well suited include: <br />• Impact of potential future reservoir operations on existing water users <br />• Impact of potential future compact river calls on existing water users <br />• Impact of potential future instream flow requirements on existing water users <br />• Safe yield of a potential future reservoir or diversion <br />For a complete description of the types of comparative analyses for which the model was developed, <br />see the Colorado River Decision Support System Feasibility Study, 1993. <br />3.1 Prior White River Basin Modeling <br />There have been no recent (within the past 10 years) water resources modeling efforts involving the <br />White River basin. Kent Holt of Division 6 developed a water allocation model based on a priority <br />system for the White River in the early 1970s that included only the major diversion structures on the <br />mainstem. Information from this work was considered out-dated and was not used in the CROSS <br />modeling efforts. <br />The Colorado River Simulation Model (CORSIM II) is a proprietary computer model, which was <br />originally developed, in the early 1970's. Until recent years, the CORSIM II model has been <br />considered the most comprehensive modeling effort of hydrology and water rights for the main stem <br />of the Colorado River and its principal tributaries (including the White). The CORSIM II model is <br />proprietary to its sponsors and accordingly, detailed review of the databases and operational logic <br />could not be performed for possible inclusion in the White Model. <br />3.2 Modeling Approach <br />The White Model was developed using StateMod, the State of Colorado's Stream Simulation Model. <br />The key components of the model include the following: <br />Simulates tributaries and mainstem river systems through the use of a tree- structured <br />network design. <br />• Simulates direct flow, instream flow, storage, and operational rights under the Prior <br />Appropriation System as a function of water availability, priority, decreed amount, demand, <br />structure capacity, and location. <br />Simulates a wide variety of operating agreements and exchanges between one or more <br />structures through user-supplied input data. <br />Model Development 3-1 <br />
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