The rainfall on five successive days on a catchment was 2, 6, 9, 5 and 3 cm. If the φindexfor the storm can be assumed to be 3 cm/day, runoff from the catchment is
Rainfall of intensity of 20 mm/h occurred over a watershed of area 100 ha for duration of 6 hours. Measured direct runoff volume in the stream draining the watershed was found to be 30000 m3. The precipitation not available to runoff in this case is:
The surface run-off is the quantity of water
The volume of water below the minimum pool level in a reservoir is known as
Current meter is used to measure velocity in a stream. The calibration of it is done in a:
Consider following statements :
1. W – index is always less than or equal to -index
2. W – index excludes the depression storage and interception loss from the total losses
3. W – index is the average infiltration rate during the time rainfall intensity exceeds the infiltration capacity rate.
Correct statement(s) is/are:
Match list – I with list – II and select the correct answers using the codes given below:
Statement (I): ϕ– index is always greater than or equal to w index
Statements (II): In calculation of w-index, initial losses (Interception depression storage) are also substracted.
Over a basin of area 333 km2, there was a storm for 6 h with a uniform intensity of 2 cm/h. The observed runoff was 20×106 m3. The average rate of infiltration for the basin was
The capacity of a service reservoir in a campus should cater to