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Mar 9, 2019 · A weir is a small dam built across a river to control the upstream water level. Weirs have been used for ages to control the flow of water in streams, rivers, and other water bodies.
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Controlling the flow of water is one of the fundamental...
- What is a Hydraulic Jump
Weir. A weir / wɪər / or low-head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the river level. Weirs are also used to control the flow of water for outlets of lakes, ponds, and reservoirs.
A weir is a concrete or masonry structure which is constructed across a river to measure water flow. Types of weirs and flow over weirs are discussed.
Feb 9, 2024 · A weir is a hydraulic structure commonly used in water management and engineering to control the flow of rivers, streams, or channels. It is designed to alter the water level and regulate the discharge of water by creating a barrier across the watercourse. Weirs come in various types, each serving specific purposes in managing water flow, preventing flooding, and facilitating water-related ...
Jun 26, 2024 · dam. weir, any control or barrier placed in an open channel to permit measurement of water discharge. The latter may be computed from a formula expressing the discharge in terms of crest length of the weir, depth of flow above the weir, weir geometry, and other factors. A variety of weirs have been used in streams, the so-called sharp-crested ...
- The Editors of Encyclopaedia Britannica
A weir is a small barrier built across a stream or river to raise the water level slightly on the upstream side; essentially a small-scale dam. Weirs allow water to pool behind them, while allowing water to flow steadily over top of the weir. [2] Additionally, the term weir can be used to refer to the crest of a spillway on a large embankment dam .
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Mar 28, 2023 · Weirs. Weir is defined as a barrier over which the water flows in an open channel. The edge or surface over which the water flows is called the crest. The overflowing sheet of water is the nappe. If the nappe discharges into the air, the weir has free discharge. If the discharge is partly under water, the weir is submerged or drowned.
