runoff

The intensity-duration relationship for a a rainfall on a rectangular plot ABCD of area 7 ha (1 ha = 10^4 m²) can be modelled by the following equation: I = 25 / (t + 10) where I i...

In the context of the effect of drainage density on the run-off generation and the hydrograph at the catchment outlet, all other factors remaining the same, pick one or more CORREC...

A storm with a recorded precipitation of 11.0 cm, as shown in the table, produced a direct run-off of 6.0 cm. Time from start (hours): 1, 2, 3, 4, 5, 6, 7, 8 Recorded cumulative pr...

A 12-hour storm occurs over a catchment and results in a direct runoff depth of 100 mm. The time-distribution of the rainfall intensity is shown in the figure (not to scale). The $...

The hyetograph in the figure corresponds to a rainfall event of 3 cm. If the rainfall event has produced a direct runoff of 1.6 cm, the φ-index of the event (in mm/hour, round off...

The total rainfall in a catchment of area 1000 km², during a 6 h storm, is 19 cm. The surface runoff due to this storm computed from triangular direct runoff hydrograph is 1×10⁸ m³...

During a 6-hour storm the rainfall intensity was 0.8 cm/hr on a catchment of area 8.6 km 2 . The measured runoff volume during this period was 2,56,000 m 3 . The total rainfall was...