Ql. Derive the deptha Veraged kinematic wave equation. Employ the Manning’s roughness friction
equation for the veIocty.
Q2. In the following river system; each reach has rectangular cross Cti0fl having channel width of 22
m. The channel bouom slope is the same tr each reach with 0.00035. The Che roughness is
constant for the system as being 55 in °/s. The base flow is 80 m3/s at the upstream branches. Assume
that the channel is wide and R = h. If 12h of flood storm with Q 180 m3/s at 6Ih hour passeS
through the system:
i. Estimate the timing of the lust sign of the flood wave at the downstream station.
ii. Estimate the timing of the first sign of the peak flood wave at the downstream station.
¡ii. Estimate the timing of the peak rate passing through the downstream station.
iv. Check the flow regime in each branch during the base flow and during the peak flow.
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