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Direction: Ordinates of a 1-hour unit hydrograph at 1 hour intervals, starting from time t = 0, are 0, 2, 6, 4, 2, 1 and 0 m³/s.

  1. Ordinate of a 3-hour unit hydrograph for the catchment at t = 3 hours is
    1. 2.0 m³/s
    2. 3.0 m³/s
    3. 4.0 m³/s
    4. 5.0 m³/s
Correct Option: C

Ordinate of 3 h unit UH =
Sum of ordinate of 1 hour UH
3



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