WSP08432

• File Number: 8443.600
• Description: Narrows Unit - Studies
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 12/10/1982
• Title: Narrows Fact Sheet No.2 December 1982
• Water Supply Pro - Doc Type: Report/Study

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A review of hydrologic data was conducted earlier this year. Analyses of

updated information based on longer term records resulted in a minor

reduction in the estimated average annual yield of water from the project.

Other contributing factors to the reduction include revised evaporation rate

estimates and the elimination of the joint-use pool. The average annual

yield is now estimated at 96,400 acre-feet as compared with an earlier

estimate of 102,000 acre-feet.

Other items completed as part of preconstruction activity include geologic

drilling and mapping along the damsite to provide additional foundation

information for the designers and test pits dug to determine suitability

of material available for construction of the dam.

Reclamation is consulting with several State and Federal agencies concerning

various aspects of the Narrows Unit. These include Colorado Division of Parks

and Outdoor Recreation and National Park Service concerning recreation plans;

the Colorado Division of Wildlife and U.S. Fish and Wildlife Service concerning

fish and wildlife issues; Colorado Division of Highways concerning relocation of

roads within the project area; and the Army Corps of Engineers concerning flood

control issues. State officials from Nebraska and Colorado were also briefed

concerning the Narrows Unit flood control benefits and storage capacity.

Reclamation and conservancy district representatives met with a large number

of civic groups and local government entities concerning the status of the

prOject and activities scheduled to ready the project for construction.