mayurakshi project
This is a sacred practice that is used. You can learn more about this practice looking online with some research.
A dam is considered to be a more sophisticaled barrier than a barrage. A dam is a barrier of concrete built accross a river to create a body of water for a hydroelectric power station or a reservoir of water and is of greater capacity than a barrage. A barrage is an obstruction in a watercourse to increase the depth of water to facilitate irrigation
The head works are built on river or water course between two banks at the same level of river to control water, distribute it through canals for irrigation or other purpose of supplying water. Barrage is made in similar way but main difference is that barrage is designed in such a way so that it could increase the water level and serve as a storage. Electricity can be produced at a barrage after construction of hydro power plants but could not be at a head works.
The head works are built on river or water course between two banks at the same level of river to control water, distribute it through canals for irrigation or other purpose of supplying water. Barrage is made in similar way but main difference is that barrage is designed in such a way so that it could increase the water level and serve as a storage. Electricity can be produced at a barrage after construction of hydro power plants but could not be at a head works.
An artificial bar or obstruction placed in a river or water course to increase the depth of water; as, the barrages of the Nile.
Only one main dam, Tarbela Dam. Other is for hydro-power generation only, called Ghazi-Barotha Dam. A barrage after Tarbela diverts some of the water towards this Dam and after generation of electricity the water is diverted back to indus. Indus have many barrages. Jinnah barrage, Chashma barrage, Taunsa barrage, Guddu barrage, Shukkur barrage and Kotri barrage. Dam under construction: Diamer-Bhasha Dam Future Dam: Kala Bagh Dam
The Barrage would work by allowing the incoming tide to pass though gates in the barrage and holding the water as the tide retreats, when the water level on the seaward side of the barrage is low enough the water held behind the barrage would be released and passed through turbines to generate electricity.
Both the dam and barrage are barriers constructed across a river or natural water course for diverting water into a canal mainly for purposes of irrigation, water supply etc. or into a channel or a tunnel for generation of power. In case of a barrage, its entire length across the river i.e. between the banks is provided with gates having their bottom sill near the river bed level. Thus, the storage behind the barrage is solely created by the height of the gates. The dam on the other hand has spillway gates almost near its top level and the storage behind the dam is mainly due to the height of concrete structure and partially due to the gate height. In both the cases, however, the number and size of gates is adequate to pass the design flood during monsoons.
WEIR: an impervious barrier which is constructed across a river to raise the water level on the upstream side is known as a weir. Here the water level is raised up to the required height and the surplus water is allowed to flow over the weir. Generally it is constructed across an inundation river. BARRAGE: when adjustable gates are installed over a weir to maintain the water surface at different levels at different times is known as a barrage. The water level is adjusted by operating the gates or shutters. The gates are placed at different tiers and these are operated by cables from the cabin. The gates are supported on piers at both ends. The distance between the pier to pier is known as Bay.
There are probably many reasons, but two good ones are both related to the construction of the Tees Barrage at Stockton (downstream from Yarm) about 13 years ago. At the site of the Barrage itself there is a purpose-built white-water rapids canoe / boating course. Upstream from the Barrage was tidal prior to construction. Now, there is a constant (much deeper) level of water upstream to beyond Yarm: one of the consequences of that is a vast improvement of the river itself, and the local flora and fauna, with the resident fish (and angling!) showing massive improvements!
A good place for a tidal barrage is somewhere like a river mouth, or a bay that has a narrow opening to the sea. You want a lot of water to come into the collection area at high tide, and then you want to catch it all in as small an area as possible to set up your turbines to harness the power of all the water. The Rance River Power Station in Brittany, France, is the world's first tidal power station. See link below.
Select a bay, estuary, firth or river mouth that has a narrow entrance to the sea. You need a lot of water moving through quickly.Build a barrage or movable wall to hold back the water when it is inside. (This step may be omitted.)Place turbines in the barrage or in the narrow channel.As the water rushes in (high tide) and out (low tide) the turbines spin, generating electricity.