What are barrages and weirs?
What are barrages and weirs?
Barrages are built near cities so that the amount of water flowing in the river can be controlled by opening and closing the gates to save the city from flooding. A weir, in contrast, is built, for example, in tourist destinations and preservation areas to allow the fish to swim upstream.
What do you mean by weir?
Definition of weir 1 : a fence or enclosure set in a waterway for taking fish. 2 : a dam in a stream or river to raise the water level or divert its flow.
What is difference between dam weir and barrage?
A barrage is a weir that has adjustable gates installed over top of it, to allow different water surface heights at different times. The water level is adjusted by operating the adjustable gates. A dam is a high impervious barrier constructed across a river valley to form a deep storage reservoir.
What is a barrage short answer?
A barrage is a type of low-head, diversion dam which consists of a number of large gates that can be opened or closed to control the amount of water passing through.
What is a barrage of a river?
Definition: A barrage is a barrier built across a river for diversion of water for useful purposes such as irrigation, water supply etc.
What is difference between weir and barrage Mcq?
What is the difference between a weir and a barrage? Explanation: Barrage is almost a similar structure like a weir, but the difference is that barrage is not a solid obstruction across a river and moreover the heading of the river is controlled by gates alone. The crest level in barrage is kept at low level.
What is weir and its types?
A weir is a concrete or masonry structure which is constructed across the open channel (such as a river) to change its water flow characteristics. Weirs are constructed as an obstruction to flow of water. These are commonly used to measure the volumetric rate of water flow, prevent flooding and make rivers navigable.
What is spillway or weir?
a spillway is a structure used to provide the controlled release of flows from a dam.It is designed to allow water to flow freely over the dam. wier section is a barrier across a river designed to alter its flow .
What is weir in irrigation?
Weir is a low obstruction that is built across a river or canal to raise the water level, or in parallel to divert the water. Two types of weirs are used to control flow; an in-stream weir and a diversion weir.
What is also known as canal fall?
But such a drop will not be stable, therefore in order to maintain this drop a masonry structure is constructed. This is known as canal fall or canal drop.
What is the other name for canal escape?
Explanation: The purpose of the construction of a regulator type escape is to scour off excess bed silt deposited in the bed reaches from time to time. Therefore, it is also called as scouring escape.
What is weir and its function?
A weir is a small dam built across a body of water, such as a river. We use them to help control the flow of water. Weirs can help raise the water level so that boats can pass through, and they can also reduce the flow of water to prevent flooding.