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Buckhorn Reservoir

   
Details
Location:

USA

State:

North Carolina

Client:

City of Wilson, NC

Highlights:

Monolith type RCC construction
In September 1999, the just completed project withstood Hurricane Floyd without damage, at peak flow of roughly double the 500-year flood event

Project Overview

The municipal water supply project involved construction of a new RCC dam with in-line intake/ outlet structure and overflow spillway.Related work included clearing of 1,700 acres of wetlands & swamps around the reservoir edge, construction of access roads, improvements to state highways, mechanical, electrical, and instrumentation for the dam. Project features included implementation of phased stream diversion, extensive long-term dewatering of dam foundation, excavation, cleanup and treatment of poor quality foundation rock, curtain grouting, construction of monolith-type RCC dam requiring all-conveyor placement, stepped OGEE principal spillway, intake/outlet structure. On-site conventional concrete and RCC plants as well as a 2,400 LF continuous conveyor delivery system were required for construction of the dam. The PVC-membrane lined precast panels that formed the vertical faces of the dam were also produced on-site

Technical Details:

Type of Dam: New RCC
Height: 44 feet; 15 m
Crest Length: 2,562 feet; 780 m
RCC Volume: 84,000 cy; 64,200 m3
Conventional Concrete: 21,000 cy; 16,000 m3

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