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Question

The ordinates of a 3-hour unit hydrograph for a catchment are given in table below

Time(h)01234Ordinate m3/s05122541

The ordinate of a 6 hour unit hydrograph for this catchment at the time instant of 4 hours would be______m3/s
  1. 23

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Solution

The correct option is A 23
TimeOrdinate ofOrdinate of 3h-UhAdditionOrdinate of 6h-UH(hr)3h-UH lagged by 3 hoursA+B=A+B2(A)(B)00001552.521212632502512.5441546235121266252512.57414120.5

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