A body of water impounded by a dam and in which water can be stored. Typically used in reference to store-and-release facilities.

Riffles are the shallower, faster moving sections of a stream or river.

Riparian zones are the areas of land bordering streams and rivers, forming the transition area between aquatic and terrestrial systems. When riparian areas are intact and […]

The area drained by a river and all of its tributaries. Also referred to as the drainage area.

An embankment dam in which more than 50% of the total volume is comprised of compacted or dumped cobbles, boulders, rock fragments, or quarried rock generally […]

A concrete gravity dam constructed by the use of a dry mix concrete transported by conventional construction equipment and compacted by rolling, usually with vibratory rollers.

A dam gate designed to control flow through large waterway openings. They may be designed as either upward or downward (skimmer) opening. A roller or fixed […]

An inflatable structure affixed to a dam crest used to manage impoundment levels.

A stone masonry dam in which the stones are unshaped or uncoursed.

A mathematical curve or family of curves indicating how a reservoir is to be operated under specific conditions to obtain best or predetermined results. Rule curves […]

A mode of hydropower operation where the outflow from a project matches the inflow to the impoundment. on an instantaneous, hourly, or other time basis.

The rotating part of the turbine that converts the energy of falling water into mechanical energy. The rotating shaft connects to an electrical generator.