Which of the following methods is used to estimate flood discharge based on high water marks left over in the past ?

1) evaporation
2) transpiration
3) stream flow
The correct answer is?
A. only (1)
B. (1) and (2)
C. (1) and (3)
D. (1), (2) and (3)

A. control the silt entry in the canal
B. prevent river floods from entering the canal
C. separate the undersluices from weir proper
D. provide smooth flow at sufficiently low velocity

A. main canal
B. branch canal
C. watercourse
D. distributory

A. 50 years
B. 150 years
C. 200 years
D. 250 years

A. 0.2 x 106
B. 0.6 x 106
C. 2.4 xlO6
D. 7.2 xlO6

A. silting river
B. scouring river
C. both silting and scouring river
D. neither silting nor scouring river