What is offtake canal?

The ‘offtake system’ is the set composed of the upstream parent canal section, the offtake structure and the dependent canal section downstream the offtake.

What is offtake in irrigation?

An irrigation system plays a vital role in managing the water resources. An offtake structure draws water from the main supply canal stores and supplies it to the fields. The focus of this study is to design an offtake structure as per the given discharge requirements and ground conditions.

What is offtake of a river?

Abstract: Off-take is a channel that bifurcates from the main channel. River offtake is one of the complex features in fluvial systems, like braiding, anabranching streams and deltas.

What is diversion head work?

Diversion headworks is a structure constructed across a river for the purpose of raising the water level in the river so that it can be diverted into the off taking canals. It is also known as canal headworks and performs the following functions. It raises the water level on upstream side.

What is canal Cross Regulator?

A cross regulator is provided on the parent channel at the d/s of the offtake to head up the parent channel at the channel to draw the required supply. The function of cross regulators: Cross regulator enable effective regulation of the entire canal system. They help to raise the water level in the parent channel is …

What is consumer offtake?

Consumer off-take refers to purchases by consumers from retailers, as opposed to purchases by retailers or wholesalers from their suppliers.

What are the components parts of diversion head works?

Components of Diversion Head Works | Irrigation | Agriculture

• Component # 1. Weirs:
• Component # 3. Divide Wall:
• Component # 4. Fish Ladder:
• Component # 5. Log Chute:
• Component # 6. Main Canal Head Regulator:
• Component # 7. Regulation of Head Regulator:
• Component # 8. Silt Control at Head Regulator:

What is silt excluder and silt ejector?

As, Silt excluders remove silt from the water before it enters the canal and silt ejectors extract the silt from the canal water after the silted water has travelled a certain distance in the off-take canal.

What are different types of canal regulators?

Types of Canal Head Regulator

• Still pond regulation:
• Open flow regulation.
• Silt control devices.

What are the function of cross regulator?

Definition: A cross regulator is a structure constructed across a canal to regulate the water level in the canal upstream of itself and the discharge passing downstream of it for one or more of the following purposes: To feed offtaking canals located upstream of the cross regulator.

What is per dealer offtake?

PER DEALER OFFTAKE (PDO) Ratio of sales by volume to the total number of dealers handling the product.

What is GT and MT in marketing?

Background. Indian FMCG companies use two primary sales channels to market, distribute and sell their products i.e. General Trade (abbreviated as GT) and Modern Trade (abbreviated as MT). General trade is the first model that came into being before the Indian market opened itself to organised retailing.

What are the types of diversion head works?

Diversion works can be classified under following two heads:

• Temporary bunds or spurs.
• Permanent weirs and barrages. Temporary bunds or spurs are temporary works, which have to be constructed every year after floods. These bunds cannot sustain the assault of floods and get washed away.
• Layout of a Diversion Head Works:

What are the main objects of diversion head works?

The objective of Diversion Head Works: 1) To raise the water level at the head of the canal. 2) To form storage by constructing embankments on both the banks of the river so that water is available throughout the year.

What is bed bars in canal?

Bed bars or a profile walls are those masonary aur concrete toe wall like structures which are construted at suitable intervals along an unlined canal, so as to serve as permanent reference Marks and thus to indicate correct alignment and theoretical bed levels of the canal at these places.

What is silt ejector?

Silt ejector is the hydraulic structure located in the canal headreach such that sediment can be preiodically flushed back into the river. It remove the water from the bottom layers of the canal through tunnels spanning the whole width of the canal and discharges it into some nearby drain or back to river.

What is the function of canal regulator?

Following are the functions of a main canal head regulator. (i) To open or close the discharge in the canal and when require. (ii) To check the silt entrance into the canal. (iii) To prevent river floods entering the canal.

What is ogee fall?

Ogee Canal Falls Ogee curve is the combination of convex and concave curves. So, Ogee fall consists of both convex and concave curves gradually. This gradual combination helps to provide smooth transition of flow and also reduce the impact.

What is meant by head regulator and cross regulator?

It is also called a canal head regulator. A cross regulator is generally provided downstream of an offtaking channel so that the water level upstream of the regulator can be raised, whenever necessary, to enable the offtaking channel draw its required supply even if the main channel is carrying low supply.

What are under sluices?

The under sluices are the openings provided at the base of the weir or barrage. These openings are provided with adjustable gates. Normally, the gates are kept closed. The crest of the under-under sluice portion of the weir is kept at a lower level (1 1.5 m) than the crest of the normal portion of the weir.