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Final Environmental Assessment
Steinaker Reservoir Normal Water
Surface Elevation Increase

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The purpose of the Proposed Action is to increase Steinaker Reservoir’s normal water surface elevation from 5,517.8 feet to 5,520.5 feet.  This would be an increase of 2.7 feet and would allow the reservoir to be filled to the current spillway crest elevation.  This increased elevation would allow for additional carryover water storage above current conditions.  If this added carryover water is proposed for any use other than present uses, additional NEPA analysis and documentation would be needed.  The Proposed Action is needed to increase the reservoir’s water storage capability with no structural or operational modification to the dam or reservoir.  Due to safety concerns, some additional monitoring of the dam would be required when water surface elevation rises to 5520.5 msl.

The scope of analysis in this EA is limited to consideration of whether or not to authorize the proposed water surface elevation increase.  This EA is being prepared because of UWCD’s request for Reclamation’s authorization to raise the normal water elevation.  Construction activities (for recreation facilities) associated with the Proposed Action would be limited to previously disturbed lands within Steinaker State Park and are related to modification or relocation of recreation facilities.

Final Environmental Assessment - Steinaker Reservoir
Normal Water Surface Elevation Increase
 Title Pages (PDF)
84 KB
 Table of Contents (PDF)
63 KB
 Chapter 1 - Need for Proposed Action and Background  (PDF)
85 KB
 Chapter 2 - Proposed Action and Alternatives  (PDF)
235 KB
 Chapter 3 - Affected Environment Environmental Effects  (PDF)
563 KB
 Chapter 4, 5, 6, 7 - Environmental Commitments, Consultation and Coordination, Preparers, References  (PDF)
108 KB
 Entire Document (PDF)
650 KB
 Finding of No Significant Impact  (PDF)
1.4 MB



Last updated: September 24, 2007