Correct Answer - Option 1 : 0.2 x 10
6
Concept:
S-curve:
(i) The S-curve is a hydrograph by a continuous rainfall at a constant rate for an infinite period. It is also known as S-hydrograph.
(ii) The equilibrium discharge from the s-curve is
\(Q = 2.78\frac{A}{T}\ {m^3}/\sec \)
Where,
A = Area of catchment (km2), T = Duration of strom (hr)
Calculation:
Given,
A = 120 km2, T = 6 hour
∵ \(Q = 2.78\frac{A}{T}\)
⇒ \(Q = 2.78\frac{{120}}{6} = 55.6\ {m^3}/\sec \)
Q = 55.6 × 3600 = 0.2 × 106 m3/hr