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.
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.
Auxiliary water supplied at an upstream or downstream fishway entrance that creates hydraulic signals strong enough that fish will sense the fishway route and pass through […]
A man-made open channel for conveying water typically from a reservoir to a powerhouse.
A concrete, masonry, or timber dam with the alignment curved upstream so as to transmit the major part of the water load to the abutments. This […]
Angled bar racks and louvers are used to direct downstream migrating fish toward bypasses and sluiceways rather than through a hydropower plant. These structural guidance systems […]
Refers to the non-integral aspects of a hydropower facility such as substations and transmission lines.