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There is no need of cross-drainage work for a canal aligned along a natural watershed because,
- a)Command area is plain
- b)Drainage flows towards the ridge
- c)Drainage flows away from the ridge
- d)There is no gravity irrigation through this canal
Correct answer is option 'C'. Can you explain this answer?
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There is no need of cross-drainage work for a canal aligned along a na...
Aligning a canal along a natural watershed or ridge line ensure gravity irrigation on both the sides of the canal. No drainage crosses the canal since drainage flows away from the ridge. Therefore, no cross-drainage work is needed in such cases.
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There is no need of cross-drainage work for a canal aligned along a na...
Explanation:
Cross-drainage works are structures constructed to allow the natural drainage pattern to continue uninterrupted when a canal is aligned along a natural watershed. These structures ensure that excess water from the natural drainage system can flow across the canal and continue its natural flow.
In the given statement, it is mentioned that there is no need for cross-drainage work for a canal aligned along a natural watershed because the drainage flows away from the ridge. This means that the natural drainage pattern is such that the water flows away from the ridge, i.e., it does not intersect the canal alignment. Let's understand this in more detail:
1. Command area is plain:
In a plain or flat area, the natural drainage pattern is usually well-defined, and water flows in a specific direction. In such cases, the canal alignment can be planned in a way that it does not intersect the natural drainage channels, eliminating the need for cross-drainage works.
2. Drainage flows towards the ridge:
If the natural drainage pattern is such that the water flows towards the ridge, it means that the canal alignment will intersect the drainage channels. In this scenario, cross-drainage works would be required to ensure that the natural drainage pattern is not disrupted.
3. Drainage flows away from the ridge:
In this case, the natural drainage channels do not intersect the canal alignment as they flow away from the ridge. Since the canal alignment does not obstruct the natural drainage pattern, there is no need for cross-drainage works.
4. There is no gravity irrigation through this canal:
The given statement does not mention anything about the purpose of the canal. However, the need for cross-drainage works is primarily related to maintaining the natural drainage pattern and not necessarily related to gravity irrigation.
Therefore, the correct answer is option 'C' - Drainage flows away from the ridge. In such cases, the canal alignment does not intersect the natural drainage channels, eliminating the need for cross-drainage works.
Cross-drainage works are structures constructed to allow the natural drainage pattern to continue uninterrupted when a canal is aligned along a natural watershed. These structures ensure that excess water from the natural drainage system can flow across the canal and continue its natural flow.
In the given statement, it is mentioned that there is no need for cross-drainage work for a canal aligned along a natural watershed because the drainage flows away from the ridge. This means that the natural drainage pattern is such that the water flows away from the ridge, i.e., it does not intersect the canal alignment. Let's understand this in more detail:
1. Command area is plain:
In a plain or flat area, the natural drainage pattern is usually well-defined, and water flows in a specific direction. In such cases, the canal alignment can be planned in a way that it does not intersect the natural drainage channels, eliminating the need for cross-drainage works.
2. Drainage flows towards the ridge:
If the natural drainage pattern is such that the water flows towards the ridge, it means that the canal alignment will intersect the drainage channels. In this scenario, cross-drainage works would be required to ensure that the natural drainage pattern is not disrupted.
3. Drainage flows away from the ridge:
In this case, the natural drainage channels do not intersect the canal alignment as they flow away from the ridge. Since the canal alignment does not obstruct the natural drainage pattern, there is no need for cross-drainage works.
4. There is no gravity irrigation through this canal:
The given statement does not mention anything about the purpose of the canal. However, the need for cross-drainage works is primarily related to maintaining the natural drainage pattern and not necessarily related to gravity irrigation.
Therefore, the correct answer is option 'C' - Drainage flows away from the ridge. In such cases, the canal alignment does not intersect the natural drainage channels, eliminating the need for cross-drainage works.
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There is no need of cross-drainage work for a canal aligned along a natural watershed because,a)Command area is plainb)Drainage flows towards the ridgec)Drainage flows away from the ridged)There is no gravity irrigation through this canalCorrect answer is option 'C'. Can you explain this answer?
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