Weir

Weir

A flow measuring device for open-channel flow. Water flows over a particularly shaped restriction and the flow can be measured on a staff gauge. Commonly used by irrigation districts to measure water.

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Part of Speech: noun
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Industry/Domain: Agriculture
Category: Irrigation
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Related terms

weir

Weather; Meteorology

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.

weir

Anthropology; Cultural anthropology

An aboriginal fish-trap based on a fence or barrier of stakes or rocks built across a stream.

weir

Energy; Hydro dam; Dam safety

A notch of regular form through which water flows.

weir

Earth science; Soil science

A low dam or overflow structure specified geometry placed across an open channel to measure the discharge from a unique water level-discharge relationship called the rating curve.

weir

Environment; Environmental conservation

A device placed across a stream and used to measure the discharge by having the water flow over a specifically designed spillway.

weir

Construction; Plumbing

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.

Saal an der Donau

Agriculture; Anatomy; Farm machinery & equipment; General agriculture; Irrigation

Saal an der Donau est une commune de Bavière (Allemagne), située dans l'arrondissement de Kelheim, dans le district de Basse-Bavière.

application efficiency

Agriculture; Irrigation

The ratio of the water that is absorbed and stored in the root zone for later use by the plants to the total water applied.

actual evapotranspiration

Agriculture; Irrigation

The actual rate of water uptake by the plant which is determined by the level of available water in the soil.

available water capacity (AWC)

Agriculture; Irrigation

The portion of water in a soil that can be readily absorbed by plant roots. It is the amount of water between field capacity and permanent wilting point. It's usually measured ...

available water (aw)

Agriculture; Irrigation

The portion of water in a soil that can be readily absorbed by plant roots. It is the amount of water between field capacity and permanent wilting point. It's usually measured ...

backflow prevention device

Agriculture; Irrigation

A mechanical device used to prevent the flow of water from the water distribution system back to the water source and may be required by law. It's similar to anti-siphon valves.

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Industry/Domain: Earth science Category: Mapping science

Outline map

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