Civil Engineering - Irrigation - Discussion
Discussion Forum : Irrigation - Section 1 (Q.No. 2)
2.
Irrigation canals are generally aligned along
Discussion:
39 comments Page 4 of 4.
Taruna said:
1 decade ago
If a canal is align along ridge line, the number of cross drainage works will be reduce. Hence it will economical. Aligning of canals along ridge line are suitable for plane topography.
Jivan said:
9 years ago
Why it is align on ridge?
Himanshu said:
9 years ago
Canal at the ridge is impossible because dams always at the valley.
Omkar bhojane said:
9 years ago
Watershed canal or ridge canal:
* The dividing ridge line between the catchment areas of two streams (drains) is called the watershed or ridge canal.
* Thus between two major streams, there is the main watershed (ridge line), which divides the drainage area of the two streams, as shown in figure below. Similarly, between a main stream and any of its tributary, there are subsidiary watersheds (ridge lines), dividing the drainage between the two streams on either side.
* The canal which is aligned along any natural watershed (ridge line) is called a watershed canal, or a ridge canal. Aligning a canal (main canal or branch canal or distributary) on the ridge ensures gravity irrigation on both sides of the canal.
* Since the drainage flows away from the ridge, no drainage can cross a canal aligned on the ridge. Thus, a canal aligned on the watershed saves the cost of construction of cross-drainage works.
* The dividing ridge line between the catchment areas of two streams (drains) is called the watershed or ridge canal.
* Thus between two major streams, there is the main watershed (ridge line), which divides the drainage area of the two streams, as shown in figure below. Similarly, between a main stream and any of its tributary, there are subsidiary watersheds (ridge lines), dividing the drainage between the two streams on either side.
* The canal which is aligned along any natural watershed (ridge line) is called a watershed canal, or a ridge canal. Aligning a canal (main canal or branch canal or distributary) on the ridge ensures gravity irrigation on both sides of the canal.
* Since the drainage flows away from the ridge, no drainage can cross a canal aligned on the ridge. Thus, a canal aligned on the watershed saves the cost of construction of cross-drainage works.
Ashish tiwari said:
9 years ago
Why contour line is not an answer?
Lopamudra said:
9 years ago
Contour line is used in hilly ares. Well explained & Thanks @Omkar.
HARISHA said:
9 years ago
Why the contour canal is avoided?
Harish said:
9 years ago
Contour canal is only used in hilly areas.
Arvind kumar kushwaha said:
8 years ago
What is stream line?
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