Last Updated On [03-11-2023]
An isolated $3-h$ rainfall event on a small catchment produces a hydrograph peak and point of inflection on the falling limb of the hydrograph at 7 hours and 8.5 hours respectively, after the start of the rainfall. Assuming, no losses and no base flow contribution, the time of concentration (in hours) for this catchment is approximately
(A) 8.5
(B) 7.0
(C) 6.5
(D) 5.5
Question ID - 156364 :- An isolated $3-h$ rainfall event on a small catchment produces a hydrograph peak and point of inflection on the falling limb of the hydrograph at 7 hours and 8.5 hours respectively, after the start of the rainfall. Assuming, no losses and no base flow contribution, the time of concentration (in hours) for this catchment is approximately
(A) 8.5
(B) 7.0
(C) 6.5
(D) 5.5
An isolated $3-h$ rainfall event on a small catchment produces a hydrograph peak and point of inflection on the falling limb of the hydrograph at 7 hours and 8.5 hours respectively, after the start of the rainfall. Assuming, no losses and no base flow contribution, the time of concentration (in hours) for this catchment is approximately
(A) 8.5
(B) 7.0
(C) 6.5
(D) 5.5
Next Question :
The Muskingum model of routing a flood through a stream reach is expressed as $O_{2}=K_{0} I_{2}+K_{1} I_{1}+K_{2} O_{1},$ where $K_{0}, K_{1}$ and $K_{2}$ are the routing coefficients for the concerned reach, $I_{1}$ and $I_{2}$ are the inflows to the reach, and $O_{1}$ and $O_{2}$ are the outflows from the reach corresponding to time steps 1 and 2 respectively. The sum of $K_{0}, K_{1}$ and $K_{2}$ of the model is
(A) -1
(B) -0.5
(C) 0.5
(D) 1
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