River Diversion Headworks Quiz
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Questions and Answers

What is the purpose of a diversion headwork?

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

What is the function of a diversion head work?

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.

What is the purpose of a storage head work?

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

How does diversion head work help in controlling the entry of silt into the canal?

<p>By providing an arrangement for controlling the sediment entry into the off taking channel from the river.</p> Signup and view all the answers

What are the main purposes of diversion headwork?

<p>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.</p> Signup and view all the answers

What are the two types of head work mentioned in the text?

<p>Diversion head work and Storage head work.</p> Signup and view all the answers

What are the main considerations for selecting a site for a barrage?

<p>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.</p> Signup and view all the answers

What are the components of diversion head works?

<p>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.</p> Signup and view all the answers

What is the purpose of a weir or barrage?

<p>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.</p> Signup and view all the answers

What are under sluices used for in diversion head works?

<p>Under sluices are used for scouring and controlling the flow of water in diversion head works.</p> Signup and view all the answers

Why is the straightness and narrowness of the river important for a barrage site?

<p>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.</p> Signup and view all the answers

What is the role of the canal head regulator in diversion head works?

<p>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.</p> Signup and view all the answers

Why is the availability of local construction materials important for selecting a barrage site?

<p>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.</p> Signup and view all the answers

What is the purpose of the fish ladder in diversion head works?

<p>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.</p> Signup and view all the answers

Why are silt control devices essential in diversion head works?

<p>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.</p> Signup and view all the answers

What is the primary function of a diversion head work?

<p>To regulate the supply of water into the canal (D)</p> Signup and view all the answers

What is the function of the divide wall in diversion head works?

<p>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.</p> Signup and view all the answers

Which statement accurately describes the purpose of a storage head work?

<p>It stores excess water when available and releases it during periods of high demand (B)</p> Signup and view all the answers

What is an essential feature of diversion head work to control silt entry into the canal?

<p>Regulating the supply of water into the canal (C)</p> Signup and view all the answers

What is a key purpose of a river diversion headwork?

<p>To control the deposition of silt at the head of canal (C)</p> Signup and view all the answers

What is the main role of a diversion head work in relation to the river's water level?

<p>To regulate the flow of water into the off taking channel (D)</p> Signup and view all the answers

Why is controlling silt entry important for a diversion head work?

<p>To prevent blockage and damage to the canal infrastructure (B)</p> Signup and view all the answers

Which factor is NOT a consideration for selecting a site for a barrage?

<p>The river should be straight and narrow at the site (B)</p> Signup and view all the answers

What is the purpose of a fish ladder in diversion head works?

<p>To facilitate the migration of fish upstream past the weir or barrage (A)</p> Signup and view all the answers

Why is the availability of local construction materials important for selecting a barrage site?

<p>To ensure that material for construction is easily accessible and reduces costs (A)</p> Signup and view all the answers

What are under sluices used for in diversion head works?

<p>To release excess water and carry silt away from the riverbed (D)</p> Signup and view all the answers

What is the main purpose of silt control devices in diversion head works?

<p>To trap and remove silt from the water to protect irrigation canals and conduits (C)</p> Signup and view all the answers

What is the function of a divide wall in diversion head works?

<p>To divide the river flow into main canals taking off from its upstream side at one or both of its flanks (B)</p> Signup and view all the answers

What are the components of diversion head works?

<p>Weir or barrage, divide wall, and fish ladder (D)</p> Signup and view all the answers

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