1.

What is a dam? Classify them.

Answer»

A dam is a barrier across the flowing stream that obstructs, directs or disrupts the flow of the river, often creating a reservoir, lake or impoundment. A ‘dam’ means a reservoir rather than the structure.

Dams are classified according to :

(i) Based on the structure and the materials used, dams are classified as :

(a) Timber dams. 

(b) Embankment dams. 

(c) Masonry dams.

(ii) According to height, dams can be categorized as :

(a) Large dams. 

(b) Major dams. 

(c) Low dams. 

(d) Medium height dams. 

(e) High dams.


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