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Last modified
7/14/2009 5:02:30 PM
Creation date
5/22/2009 7:01:38 PM
Metadata
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UCREFRP
UCREFRP Catalog Number
7414
Author
U.S. Army Corps of Engineers.
Title
Sandstone Dam and Reservoir, Municipal, Agricultural and Industrial Water Supply Project Carbon County, Wyoming
USFW Year
1988.
USFW - Doc Type
Draft Environmental Impact Statement.
Copyright Material
NO
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<br />3.43 The Upper Savery Dam would be a zoned, earthen embankment <br />with maximum height of approximately 130 feet above the stream <br />level. The dam crest would be 30 feet in width and approximately <br />3,500 feet, long. The top elevation of the dam would be <br />7,157 feet msl. The reservoir would cover 940 acres and have a <br />total capacity of 40,000 acre-feet. <br />COMPLIANCE WITH APPLICABLE LAWS AND REGULATIONS <br />3.44 Implementation of this alternative would require compliance <br />with mar}y of the same laws and regulations as the proposed <br />Sandstone project. <br />POTENTIAL FOR FUTURE DEVELOPMENT <br />3.45 No future development beyond the original project slope is <br />envisioned for the Upper Savery Dam and Reservoir. <br />HYDROELECTRIC POTENTIAL <br />3.46 The applicant has indicated that no hydroelectric <br />generating facilities were planned for this alternative. <br />REASON FOR ELIMINATION <br />3.47 The foundation bedrock at the Upper Savery dam site is a <br />potentially weak shale that has been responsible for numerous <br />large landslides in the immediate area. An existing landslide on <br />the left abutment imposes special requirements on dam design. It <br />would be necessary to construct the embankment with relatively <br />flat slopes, on the order of 8H:1V (horizontal:vertical), to <br />account for the potentially low shear strength of the shale. <br />These flat slopes would significantly increase the cost of the <br />project by increasing the volume of fill and the lengths of the <br />spillway and outlet, works conduit. The Upper Savery site is <br />considered to have the poorest foundation conditions of all the <br />sites studied in the Little Snake River Water Management Project <br />3-16 <br />
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