Description
The project consists of an earth fill dam with stone slope protection 560 feet (170 m) long and 78 feet (24 m) high. Located over the outlet channel, the spillway comprises a concrete weir 200 ft (61 m) in length. The weir's crest elevation is 15 feet (4.6 m) lower than the top of the dam. The dam creates a permanent lake 23 acres (93,000 m2) in size with a maximum depth of 16 ft (4.9 m) The flood storage area for the project covers about 913 acres (3.69 km2) in the towns of Southbridge and Sturbridge, Massachusetts. The entire project, including all associated lands, covers 510 acres (2.1 km2). The Westville Dam can store up to 3.61 billion US gallons (13,700,000 m3) of water for flood control purposes. This is equivalent to 6.5 inches (170 mm) of water covering its drainage area of 32 square miles (83 km2).
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