# Civil Engineering - Irrigation - Discussion

### Discussion :: Irrigation - Section 1 (Q.No.2)

2.

Irrigation canals are generally aligned along

 [A]. ridge line [B]. contour line [C]. valley line [D]. straight line.

Explanation:

No answer description available for this question.

 Taruna said: (Jun 26, 2013) 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.

 Kapil Shah said: (Jul 21, 2013) One can get maximum flow velocity by providing canal through ridge line.

 Sandip said: (Sep 15, 2013) Ridge canal can irrigate on its both sides.

 Renuka Patyal : said: (Jan 1, 2014) Why it not align along contour line?

 Jayashree said: (Feb 4, 2015) Why the canal is not constructed along the valley line?

 Rohan said: (Feb 27, 2015) It is actually aligned through valley line.

 Rajesh Samantara said: (Mar 2, 2015) Why irrigation canal is constructed along the ridge line?

 Melesse said: (Jun 21, 2015) Canal align along the contour will economical, due to minimum comparative cut and fill of canal excavation and it reduces the cost& time to construct flow for gorges. So, why it could not be the answer?

 Shail said: (Oct 17, 2015) But canal align along the contour can irrigate only one side of the canal.

 Shail said: (Oct 17, 2015) But canal align along the contour can irrigate only one side of the canal.

 Akshara said: (Oct 26, 2015) What is ridge line?

 Jivan said: (Mar 9, 2016) Why it is align on ridge?

 Himanshu said: (Jun 22, 2016) Canal at the ridge is impossible because dams always at the valley.

 Omkar Bhojane said: (Jul 27, 2016) 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.

 Ashish Tiwari said: (Nov 29, 2016) Why contour line is not an answer?

 Lopamudra said: (Dec 13, 2016) Contour line is used in hilly ares. Well explained & Thanks @Omkar.

 Harisha said: (Feb 4, 2017) Why the contour canal is avoided?

 Harish said: (Feb 4, 2017) Contour canal is only used in hilly areas.

 Arvind Kumar Kushwaha said: (Aug 14, 2017) What is stream line?

 Jagtap Jagnnath said: (Aug 15, 2017) When high velocity of canal there create scoure and low velocity there deposit silt so that use ridge line of canal.

 Vaibhav Chandola said: (Dec 5, 2017) What is the definition of ridge line?

 Raj said: (Mar 25, 2018) Highest contour canal means ridge contour.

 Mudasir said: (May 2, 2018) Can you explain the watershed canal in short terms?

 Rahul said: (May 9, 2018) Ridge line is also called watershed.

 Shubham said: (Jul 18, 2018) It can irrigate both side of itself (left and right side). It is also known as Watershed canal.

 Vaibhav said: (Sep 23, 2018) Ridge line = Watershed.

 A. B Nongrum said: (Nov 14, 2018) What is a ridge line? Please tell me.

 Ganesh said: (Feb 10, 2019) Main canal is alinged along contour line and branch canal are in ridge line.

 Sandy said: (Nov 19, 2019) Canals are also aligned along the contour line but it irrigates only one side (d/s) and the contour canal will need the number of cross drainage work. Comparatively ridge all will need min no of C/D work and it can irrigate both sides of the canal so ridge line canals are preferable.

 Sanju Kumar said: (Dec 28, 2019) Is we made canal along the ridge line then we can irrigate in both side of ridge line. Ridge line is the peak of a drainage area which divide the drainage area into two half.

 Yosef said: (Mar 13, 2020) All possible.

 Nihal said: (May 27, 2020) It's ridge line.

 Bipeen Raikhola said: (Mar 18, 2021) Why not a straight line? Please tell me.