Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: Severe erosion will occur in gully if structure to control velocity of water along the slope is not provided.
Reason R: Drop structures and chute spillways are used to prevent erosion in irrigation channels.
In the light of the above statements, choose the most appropriate answer from the options given below
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Structures used for erosion control:
• Drop spillway
• Chute spillway
• Check dam
Purpose:
\[
\boxed{
\text{Reduce flow velocity and prevent soil erosion}
}
\]