Construction on Grenada Dam began in 1947 and opened for operation in January, 1954. Grenada Dam is located northeast of the City of Grenada on the Yalobusha River. The earthen-filled dam stands 80 feet above the streambed and measures 13,900 feet in length. It features a 200-foot concrete spillway with a crest elevation of 231.0 NGVD. Grenada Lake has overflowed the spillway four times since the dam was constructed occurring in 1973, 1980, 1983, and in 1991 when over 6 feet of water topped this structure. The intake structure contains 3 gates that measure 7.5 feet by 14 feet. Grenada Lake is Y-shaped and when filled to spillway crest extends up the Yalobusha River Valley a distance of 22 miles and up the Skuna River Valley a distance of 19 miles. Statistics GENERAL INFORMATION Construction Completed 1954 Cost of Construction $32 million Dam Type Earthen-fill Length of Dam 2.6 miles Top of Dam 256 ft. NGVD Drainage Area 1,320 sq. miles Spillway Type Uncontrolled Chute-type CONSERVATION POOL Pool Elevation, feet 193.0 Pool Surface Area, acres 9,800 Storage, acre-feet* 85,700 Shoreline Miles 54 FLOOD CONTROL POOL Pool Elevation, feet 231.0 Pool Surface Area, acres 64,600 Storage, acre-feet* 1,251,700 Shoreline Miles 282 Surcharge Pool Elevation, feet 247.5 Surcharge Pool Area, acres 106,100 Surcharge Pool Storage, acre-feet* 1,384,700
Posted on: Fri, 06 Jun 2014 17:13:21 +0000
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