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Chatfield Reservoir Reallocation Project
Project Summary The purpose of the feasibility study is to investigate the potential for reallocation of reservoir storage space from flood control use to multi-purpose use, including up to 20,600 acre-feet for M&I and agricultural uses. The CWCB entered into a Feasibility Cost Share Agreement (FCSA) with the U.S. Army Corps of Engineers (Corps) to complete a Feasibility Report (FR) and Environmental Impact Statement (EIS), commonly known as the FR/EIS, for the reallocation effort. The CWCB also signed individual agreements (Letters of Commitment) with 16 Front Range water users to formalize requirements related to study costs and allocation of potential space in the reservoir.
An antecedent flood study was completed and approved by the Corps to technically allow for the conversion of flood control storage space to water supply storage space. The study demonstrated that the reallocation could take place using technical, administrative, and operational techniques without requiring physical changes to the dam or spillway, and without adversely impacting the flood control function of this critical facility located in the southern portion of the Denver Metropolitan area.
The project enjoys broad support from government agencies, special districts, non-profit interests, and elected officials at local, state, and federal levels. If approved and implemented, the reallocation of storage space will assist in addressing water supply needs within the South Platte River basin as identified by the Statewide Water Supply Initiative (SWSI). Proposed State Legislation will greatly assist in facilitating substantial mitigation for environmental and mitigation impacts, as well as overall project completeness.
Work is on-going at this time to produce a draft FR/EIS for public review and comment. The study team hopes to have a Record of Decision (ROD) from the Corps by March of 2009.
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