A dam in a river to stop and raise the water, for the purpose of conducting it to a mill, forming a fish pond, or the like.
A fence of stakes, brushwood, or the like, set in a stream, tideway, or inlet of the sea, for taking fish.
A long notch with a horizontal edge, as in the top of a vertical plate or plank, through which water flows, -- used in measuring the quantity of flowing water.
(1) A wall or plate in a open channel to measure the flow of water. (2) A wall or obstruction used to control flow from settling tanks, clarifiers, or a drainage system to ensure a uniform flow rate.
A fence-like structure made of a row of wooden stakes that have latticework woven in-between them. It would be constructed in an estuary, stream, or shallow river, allowing water to flow through it, but stopping the salmon that would try to swim upstream to spawn. The salmon would then be easily speared, netted, or guided into nearby traps.
an aboriginal fish-trap based on a fence or barrier of stakes or rocks built across a stream.
An artificial ledge or low dam on the river which is built to hold back or divert water. Water falling over the weir usually creates a stopper with a tremendous holding power which can be very hazardous, especially in high water conditions.
1) A wall or plate placed in an open channel and used to measure the flow of water. The depth of the flow over the weir can be used to calculate the flow rate, or a chart or conversion table may be used. 2) A wall or obstruction used to control flow (from settling tanks and clarifiers) to assure uniform flow rate and avoid short-circuiting.
stone enclosure erected in a shallow waterway, used for trapping and spearing fish.
A dam which discharges water over its top or crest.
A depressed channel in a dam providing an outlet for the overflow water in a pond when the water level exceeds a desired height. Weirs are usually concrete or timber, or a combination of the two.
A low dam used to control the height and flow of water on a canalized river. Barrage in French.
a structure that extends across the width of a channel and is used to impound, measure, or in some way alter the flow of water through the channel.
Dam across a river or stream to control flow
The device in a skimmer that controls the amount of water coming into the skimmer, and keeps debris inside. That "flapper-gate thing". To view our range of skimmers click here.
The (often adjustable) barrier that controls the paint depth in an E-coat tank over which the paint flows to the circulation pump to be filtered.
A barrier or dam across a channel to increase water depth and control the flow.
dam in a waterway over which water flows
An enclosure set in a waterway for taking fish.
A device included with a through-the-wall or over-the-wall skimmer that controls the amount of surface water (flow) drawn into the skimmer and filtration system. See also skimmer weir.
_ A notch or depression in a dam or other water barrier through which the flow of water is either measured or regulated.
a low dam built across a stream to raise its level or divert its flow
a fence or wattle built across a stream to catch or retain fish
a calibrated structure used to relate water-level (i
a device for catching fish, as well as a Scottish name
a low dam built across a river
a low dam over which the water flows) across the stream and measure water levels or, (c) use a flow-meter to measure velocity, and a level and tape to measure the stream cross-section
a low dam placed on an open-surface liquid stream to regulate the flow
a notch of a specific shape through which water may flow
a notch on a larger scale - usually found in rivers
a notch on a large scale, used, for example, to measure the flow of a river, and may be sharp edged or have a substantial breadth in the direction of flow
a small dam across a stream that controls the flow of water out of one area into another
a structure over which the water flows, the discharge being in the same conditions as for a notch
a type of dam that holds water in the river during normal flows, but diverts overflow into bypasses when the river rises during flood conditions
a type of small overflow dam that can be used for flow measurement
a water spillway
A spill over device used to measure or control water flows.
a dam created in order to raise the level of the water behind it
A barrier, erected across a stream to impound and raise the water level for the purpose of maintaining it at the level required for irrigation or navigation purposes.
A device used to control and measure water flow.
The barrier in a skimmer over which water flows. A floating weir raises and lowers its level to match the water level in a pool or spa.
A man made structure that backs water into a pool above it. Can often form a dangerous stopper below it.
a fence of brush or stakes or other materials built in a stream for catching fish.
a construction across a river that dams the water but may be removable during times of flood.
A dam placed across a river or canal to raise or divert the water, or to regulate or measure the flow.
A fence-like fish trap placed across a stream or outlet forces fish to swim into waiting traps.
Usually a barrier constructed to catch upstream migrating adult fish.
notch in dam or levee that regulates and directs flow of water.
A structure across a waterway to stop and raise water levels.
A control structure built across a stream or lake outlet to raise the water level a small amount. [OE. waer, a fence.
A low dam used to divert water; frequently built by commercial eel-trap operators to catch eels and confuse canoeists.
also called skimmer weir – Part of a skimmer that adjusts automatically to small changes in water level to assure a continuous flow of water to the skimmer. The small floating "door" on the side of the skimmer that faces the water over which water flows on its way to the skimmer.
Dam in the trapway that is specifically designed to give you recommended water seal and water spot.
Device built in the form of a dam or barrier which regulated the water level in the canal.
a gate on the bank that allows floodwater into a bypass.
a trap for catching fish made by pounding stakes into the bed of a river or stream and so creating an enclosure in which the captured fish can be easily dipped out or speared
A river-damn that raises the level of water above it.
1. A fence set in a waterway for catching fish; 2. A dam in a stream to raise the water level or divert its flow..
A fence or wattle placed in a stream to catch or retain fish.
1. A low dam built across a stream to raise the upstream water level. 2. A structure built across a stream or channel for the purpose of measuring flow.
Also called a Skimmer Weir. The small floating door on the side of the skimmer over which water flows on its way to the skimmer. The weir prevents debris from floating back into the pool when the pump is off.
a low dam built in a stream or river to back up or drain water; water escapes over the top since there is no release mechanism at the bottom of the reservoir
A certain kind of water flow measuring device.
1. A low dam built on a river to divert or back up water for a mill. 2. A raised piece in the flow path of a fluid, which slows or seals off the flow when the diaphragm is pressed against the raised piece, closing the valve.
1. A wall or plate placed in an open channel to measure the flow of water. 2. A wall or obstruction used to control flow from settling tanks and clarifiers to ensure a uniform flow rate and avoid short-circuiting. (See: short-circuiting.)
A weir is a small overflow-type dam commonly used to raise the level of a river or stream. Weirs have traditionally been used to create mill ponds in such places. Water flows over the top of a weir, although some weirs have sluice gates which release water at a level below the top of the weir.