Flood Simulation Models for a River System in a Tropical Region: The Case of Linggi River, Malaysia
Flooding of a river system in a tropical region is predicted using mathematical simulation models in this study. The proposed models were categorized as hydrologic model, hydraulic model and sedimentation model. Two methods of hydrologic models were used to simulate the peak: streamflow in a riv...
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| Format: | Thesis |
| Language: | English English |
| Published: |
1998
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/10205/1/FK_1998_22_A.pdf |
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| Summary: | Flooding of a river system in a tropical region is predicted using
mathematical simulation models in this study. The proposed models were
categorized as hydrologic model, hydraulic model and sedimentation model.
Two methods of hydrologic models were used to simulate the peak:
streamflow in a river system of a tropical region. The first hydrologic model is the
river model, which is a first order linear autoregressive model, AR(1). The second
hydrologic model is called the basin model which is a deterministic model based on
a linear relationship between rainfall and runoff. The basin model is also described
as a distributed model in which the river basin is divided into a number of
subbasins whereby the rainfall and the runoff at each subbasin is simulated
separately and then combined to get the river basin response. The Linggi River
system in Seremban, Malaysia was used as a case study. The Linggi River system consists of a main river which is called Linggi, and it's six tributaries called the
Batang Penar, Paroi, Temiang Diversion, Temiang, Anak Rasah and Kepayang.
The total catchment area of the Linggi River system up to the point of interest is
127.7 km2. Recorded hydrologic data for the Linggi River basin was used in the
evaluation and testing of the proposed models. Models evaluation involved
calibration, verification and sensitivity analysis. Models testing was implemented
using the Theil's technique. The calculated value of Theil's coefficient was 0.028,
0.17 and 0.01 for the basin model, river model and the hydraulic model
respectively. A computer program was written to especially perform the
calculations of the basin model. This computer program is called BSHYMD. |
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