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<br />. <br /> <br />. <br /> <br />. <br /> <br />3. <br /> <br />CWCB/U.S. Annv Corps ofEnlrineers - Chatfield Reservoir Reallocation Studv <br />Authorization: lIB 98-1189 Grant Amount: $266,094 <br />Water Source: South Platte River Project Type: Reservoir Supply Study <br />Location: 10 miles S. of Denver Project Manager; Larry Lang <br /> <br />This project involves cooperating with the Corps of Engineers to complete a feasibility study <br />regarding the reallocation of existing flood control storage to a multi-purpose use. A Scope of Work and <br />contract has been executed to investigate the opportunities and feasibility for the reallocation of certain <br />storage volumes. The contract will determine reallocation opportunities and impacts, environmental <br />assessments, plan formulation recommendations, and formal request to higher Corps authority. <br /> <br />The general contractor for the study is Simon and Associates, Fort Collins, Colorado. The study <br />project is under administration of a number of interests. The project team is a made up of Simon and <br />Associates (General Contractor), Project Technical Review Committee, Water Use and Needs Sub- <br />Committee and Recreational Committee, and the project sponsors (Corps of Engineers and Colorado <br />Water Conservation Board). This team is providing the technical expertise and oversight for the <br />successful accomplishment of the provisions of the contract. <br /> <br />In FYOI-02, the reservoir operation model was developed by Simon is under review by the <br />sponsors. This model is the vehicle for the performance and evaluation of all the project tasks aud <br />development of the information to be evaluated and considered by the project team membership for the <br />development of the final project recommendations. <br /> <br />\ <br />The contract has seventy-one tasks. Two independent major tasks are: (I) water use patterns <br />(water study) and need requirements and (2) recreational impact analysis (recreation study). These two <br />studies are the responsibility of the Top the dam devation 5521 Chatfield Reservoir Reallocation Study <br />CWCB. The CWCB has contracted "Preliminary findings for reallocated space" <br />the water study in 2001 and is <br />working with Division of Parks and <br />Outdoor Recreation in the <br />contracting of the recreation study. <br />The Water Study is contracted to <br />Brown and Caldwell and is <br />scheduled for completion in the <br />summer of2002. <br /> <br />e1evaIlQn5521.6 <br /> <br /> <br />Elt'llltl1)ll5500 <br /> <br />Much cooperation is <br />occurring among the water providers <br />in the development of water supply <br />and use patterns. The study will <br />develop operational plans for the <br />20,600 Ac.-Ft. proposed reallocation <br />of flood storage space. A required <br />study task is the verification of the <br />interested party's water rights and <br />reasonable demand patterns. It is <br />clear that Denver water holds most of the senior water rights at Chatfield Reservoir. A draft report is due <br />out in July 2002 that will help the CWCB staff and Board with a listing of interested parties, water use <br />patterns and demands, available storable water for the proposed reallocation of storage space, and the <br />determination of a project sponsor for the new water supply storage space in Chatfield Reservoir. <br /> <br />ElevatiQn5444 <br /> <br />Proposed Water Supply Pool <br />from the Reallocation Study <br /> <br />Elevatll)nS432 <br /> <br />ElevatlonS380 <br /> <br />Page 3 of31 <br />