The term Aquatic Base Flow was coined by the US Fish and Wildlife Service to describe a set of chemical, physical and biological conditions that represent […]

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 […]

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 turbine in which water flows through in a parallel direction to the turbine shaft.

An adjustable gate used to regulate water flow through a dam. This gate type lowers to open and raises to close.

Basin-scale or basin-wide encompasses the activities that occur within the area of land drained by a river and its tributaries.

Double side-channel spillway.

A nearly horizontal step in the sloping profile of an embankment dam. Also a step in a rock or earth cut.

Division into two branches.