A catchment has an area of 100 hectares (1 hectare = 10000 m2) and runoff coefficient of 0.4. Due to a 5 cm rainfall event over the catchment, the stream flow at the outlet lasts for 10 h. What is the value off average streamflow (in m3/hour) at the outlet of the catchment for this event?
1
2000
2
4000
3
400
4
1000