River Diversion Headworks Quiz

To divert river water towards the canal, ensure regulated continuous supply of silt-free water, and provide storage capacity.

To divert the required supply of water from the source channel to the off taking channel and raise the water level in the source channel to the required level for diversion.

To fulfill all the requirements of diversion headwork, store excess water, and release it during periods when demand exceeds supplies.

By providing an arrangement for controlling the sediment entry into the off taking channel from the river.

To raise the water level in the river, regulate the supply of water into the canal, provide storage of water, control the entry of silt into the canal, reduce fluctuations in the level of supply in the river.

Diversion head work and Storage head work.

The main considerations for selecting a site for a barrage include the straightness and narrowness of the river, well-defined and stable riverbanks, higher elevation than the irrigated area, and availability of local construction materials.

The components of diversion head works include weir or barrage, divide wall, fish ladder, under sluices, canal head regulator, silt control devices, pocket or approach channel, river training works, and protection works.

The purpose of a weir or barrage is to raise the water level on the upstream side of the obstruction and divert the flow into supply canals or conduits for irrigation, power generation, or domestic use.

Under sluices are used for scouring and controlling the flow of water in diversion head works.

The straightness and narrowness of the river are important for a barrage site to facilitate the construction of a barrier across the river and to effectively raise the water level on the upstream side.

The canal head regulator is responsible for controlling the flow of water into the canals and regulating the distribution of water for irrigation and other purposes.

The availability of local construction materials is important for selecting a barrage site to ensure easy access to materials required for the construction of weirs, barrages, and other diversion head works components.

The purpose of the fish ladder in diversion head works is to facilitate the movement of fish past a weir or barrage, allowing them to migrate upstream to their spawning grounds.

Silt control devices are essential in diversion head works to prevent the accumulation of silt, which can obstruct the flow of water and affect the efficiency of irrigation and power generation.

To regulate the supply of water into the canal

The divide wall in diversion head works is responsible for separating the flow of water and directing it towards the desired canals or conduits, ensuring efficient water diversion.

It stores excess water when available and releases it during periods of high demand

Regulating the supply of water into the canal

To control the deposition of silt at the head of canal

To regulate the flow of water into the off taking channel

To prevent blockage and damage to the canal infrastructure

The river should be straight and narrow at the site

To facilitate the migration of fish upstream past the weir or barrage

To ensure that material for construction is easily accessible and reduces costs

To release excess water and carry silt away from the riverbed

To trap and remove silt from the water to protect irrigation canals and conduits

To divide the river flow into main canals taking off from its upstream side at one or both of its flanks

Weir or barrage, divide wall, and fish ladder