Date of Award:

5-1968

Document Type:

Thesis

Degree Name:

Master of Science (MS)

Department:

Geosciences

Department name when degree awarded

Geology

Committee Chair(s)

Clyde T. Hardy

Committee

Clyde T. Hardy

Committee

J. Stewart Williams

Committee

Robert Q. Oaks, Jr.

Committee

Raymond L. Kerns, Jr.

Abstract

Two areas along the Blacksmith Fork River, in the Bear River Range southeast of Logan, Utah, were studied as sites for a storage dam and reservoir. An earth dam, 150-200 feet high, and a reservoir of 15,000-20,000 acre-feet are contemplated by the Bureau of Reclamation, U.S. Department of Interior.

The lower area, located about 7 miles east of the mountain front, involves two possible dam sites on limestone. Thick overburden is present in the canyon bottom and on the right abutments. The upper area, located about 2 miles south of the headquarters of the Hardware Ranch, includes two possible dam sites on quartzite. The quartzite at the upstream site was found, by drilling and testing, to be extensively fractured; the downstream site has not been drilled. Acceptable topographic settings are present at both of these sites.

Geological factors, as well as a difficult road relocation necessitated by the reservoir, exclude the lower area. It is recommended that the downstream site of the upper area be explored by means of a drilling program. A systematic evaluation of construction materials near this site, based on appropriate excavations, is also required.

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