The water surface elevation at the exit boundary.

The water just downstream from a structure.

Surface water having fallen as rain or flowing through a field as irrigation collected through a series of ditches, pipes and pumping mechanisms for return to a reservoir or other holding structure

Tailwater is the level of water immediately downstream of the dam.

the downstream section of a river or stream found below a large man-made dam. The most famous and productive tailwaters are from bottom-discharge dams, making the water relatively cold and constant in temperature.

The water surface immediately downstream from a dam or hydroelectric powerplant.

The part of a river downstream from a dam, where the flow and quality of the water are substantially affected by the dam discharge.

Type of water found downstream from a dam (natural or manmade) or reservoir.

A river or stream that flows out from a dam. Tailwaters are very good fisheries as the water is released from the bottom of the reservoir, keeping the temperatures cool and consistent all season long.

The water in the natural stream immediately downstream from a dam.

The water surface elevation in the channel downstream of a hydraulic structure

The water surface elevation at the downstream side of a hydraulic structure (i.e. culvert, bridge).

The water downstream of the powerhouse.

The waters immediately downstream of a dam. For power dams, also referred to as the water discharged from the draft tubes.