Advertisements
|
Flood is a natural even which has always been an integral part of geological history of earth. It occurs along rivers, streams and lacks.
Importance of flood:
-
Most of the hydraulic are designed on flood record.
-
Small hydraulic structures are based on a minimum of 25 years flood records e.g all structure constructed in the canal, soil conservation practices etc.
-
Medium type strs are mainly based on 50 years flood records e.g culuerts, drainage strs and waterway structures.
-
Large irrigation projects are based on 100 years of flood record e.g Dams, reservoirs, headwork’s, bauages.
Causes of floods:
Intensive rainfall and high melting of snow are two main causes of flood. |