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Posted: **Mon May 16, 2022 8:25 am**

: 9 A River Catchment Has A 2 Hour Unit Hydrograph With The Ordinates Given In Table Below Assume That The Base Flow At 1 (25.7 KiB) Viewed 64 times

: 9 A River Catchment Has A 2 Hour Unit Hydrograph With The Ordinates Given In Table Below Assume That The Base Flow At 2 (11.54 KiB) Viewed 64 times

9. A river catchment has a 2 hour unit hydrograph with the ordinates given in table below. Assume that the base flow at time t=0 hour is 20 m3/s and linearly increases to 44 m/s at t=24 hours. Time (hr) 0 UH (m/s) 0 Base flow (m/s) 20 2 3 22 4 11 24 6 35 26 8 28 55 66 10 30 12 63 32 34 14 16 18 40 22 Saalo 36 38 40 42 20 22 24 44
b) To prevent downstream flooding, the maximum flow to be released from the catchment is set at 180 mº/s. Calculate the space volume needed to store the excess water from this event (in m).