Cross drainage works is a structure constructed when there is a crossing of canal and natural drain, to prevent the drain water from mixing into canal water. This type of structure is costlier one and needs to be avoided as much as possible.

What are the merits and demerits of cross drainage structure?

works, drainage is carried over the canal. The advantage of this is that the C.D works themselves are less liable to damage than the earth work of the canal. The major disadvantage of this work is that the perennial canal is not open to inspection.

Why cross drainage works are important mention the condition where you can select the site?

Selection of a Suitable 'Site' for Cross Drainage Work

At the site, the drainage should cross the canal alignment at right angles. Such a site provides good flow conditions and also the cost of the structure is usually a minimum. The stream at the site should be stable and should have stable banks.