A type of roller-mounted vertical lift gate supported along either side by stainless steel roller chains.

A property, the expansion, redevelopment, or reuse of which may be complicated by the presence or potential presence of a hazardous substance, pollutant, or contaminant.

An axial flow type of propeller turbine in which the turbine and generator are a sealed unit placed directly in the water stream.

A valve mechanism that regulates the flow of materials within large pipe diameters by the quarter-turn rotation of a disk. The butterfly valve is a quarter-turn […]

Reinforced concrete buttresses proportioned to transfer the water load to the foundation rock through individual buttress footings, using the weight of the impounding water and the […]

A channel or conduit through or around a dam that provides river flow and a route for fish to pass without going through the turbine units.

The area in a waterway between the initial point where water has been diverted through turbines or other mechanical means for the purpose of water-powered generation […]

A man-made open channel for conveying water typically from a reservoir to a powerhouse.

Fish that begin their life cycle in saltwater, then migrate as juveniles into freshwater, where they grow into adults before migrating back into the ocean to […]