Modeling of compound channel for optimum river storage capacity. Technical Report. Institut Penyelidikan Air Kebangsaan Malaysia (NAHRIM), Seri Kembangan, Selangor. (2004)
Abstract
As a flood wave passes through a river reach, the peak of
the outflow hydrograph is usually attenuated and delayed
due to channel resistance and storage capacity (Bras, 1990).
This is shown diagramatically and in exaggerated form in
Figure.
1. The Figure showed some important features which can be identified as a translation in time of the
hydrographs for flood event between Location A (upstream)
and Location B (downstream); a decrease in the peak
discharge and a deformation of the hydrograph. The typical
shape of the outflow hydrograph at Location B represent
flow in the main channel only. For two stage channel i.e.
river with main channel and floodplains as the usual case
for natural river, the shape of the hydrograph is different for flow in the floodplains (overbank flow) as shown in Figure.
2. The time of peak of the peak outflow is delayed further
and hence more attenuation. Much of these explainations with actual river system flood hydrographs can be obtained from Price (1995).
| Item Type: | Monograph (Technical Report) |
|---|---|
| Keywords: | Hydrograph, River, Two stage channel (compound channel), Floodplain; main channel, Attenuation, Storage, Peak inflow, Peak outflow, Overbank hydraulic |
| Taxonomy: | By Subject > College of Engineering > Civil Engineering > Water Resources and Environment |
| Local Content Hub: | Subjects > College of Engineering |
| Depositing User: | Farleen Azrina Zamberi |
| Date Deposited: | 14 Sep 2022 08:22 |
| Last Modified: | 14 Sep 2022 08:22 |
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