Wild Cat Aqueduct is a tunnel

Tunnel

A tunnel is an underground passageway, completely enclosed except for openings for egress, commonly at each end.A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. Some tunnels are aqueducts to supply water for consumption or for hydroelectric stations or are sewers...

 carrying water for hydroelectric power in Granville, Massachusetts

Granville, Massachusetts

Granville is a town in Hampden County, Massachusetts, United States. The population was 1,566 at the 2010 census. It is part of the Springfield, Massachusetts Metropolitan Statistical Area.- History and Description :...

.

The aqueduct

Aqueduct

An aqueduct is a water supply or navigable channel constructed to convey water. In modern engineering, the term is used for any system of pipes, ditches, canals, tunnels, and other structures used for this purpose....

 carries water eastwards from Cobble Mountain Reservoir, located some 20 miles west of Springfield

Springfield, Massachusetts

Springfield is the most populous city in Western New England, and the seat of Hampden County, Massachusetts, United States. Springfield sits on the eastern bank of the Connecticut River near its confluence with three rivers; the western Westfield River, the eastern Chicopee River, and the eastern...

 in the towns of Blandford

Blandford, Massachusetts

Blandford is a town in Hampden County, Massachusetts, United States. The population was 1,233 at the 2010 census. It is part of the Springfield, Massachusetts Metropolitan Statistical Area. It is the home of the Blandford Ski Area.- History :...

, Granville

Granville, Massachusetts

Granville is a town in Hampden County, Massachusetts, United States. The population was 1,566 at the 2010 census. It is part of the Springfield, Massachusetts Metropolitan Statistical Area.- History and Description :...

, and Russell, Massachusetts

Russell, Massachusetts

Russell is a town in Hampden County, Massachusetts, United States. The population was 1,775 at the 2010 census. It is part of the Springfield, Massachusetts Metropolitan Statistical Area.-Geography:...

, to a hydroelectric power station located about 2 miles (3.2 km) downstream on the Little River, just upstream from the Gorge. From there it connects to the Springfield Aqueduct.

The power station was built in 1930 by the City of Springfield, and now owned by the Springfield Water and Sewe Commission and operated by a subsidiary of Northeast Utilities System. It contains three generators for a total output of 30.6 megawatts.