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New regional-specific urban runoff prediction model of Sungai Kayu Ara catchment in Malaysia

Lloyd, Ling and Chow, Ming Fai and Tan, Wei Lun and Tan, Wen Jia and Tan, Cheng Yuan and Yusop, Zulkifli (2020) New regional-specific urban runoff prediction model of Sungai Kayu Ara catchment in Malaysia. In: Lecture Notes in Civil Engineering. Springer, pp. 161-168. ISBN 2366-2557

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Official URL: http://dx.doi.org/10.1007/978-981-15-1193-6_18

Abstract

Malaysian government agencies adopted curve number (CN) rainfall-runoff model for design use like many other commercial software applications, while most researchers have adopted CN values from its published handbook from USA. However, there is no regional-specific curve numbers handbook in Malaysia for the rainfall-runoff predictive modelling. This study did not refer to any CN value but derived a statistically significant CN value with rainfall-runoff events directly. The derived λ = 0.0002 is statistically significant (α = 0.01), while the optimum CN value of 92.95 represents the rainfall-runoff characteristic at the Sungai Kayu Ara catchment. The runoff predictive model estimated an averaged flood depth of 7.46 cm from 100 mm rainfall event when the drainage infrastructure fails to drain away the runoff volume effectively. It is recommended to limit the upstream development, while rainwater harvesting, storm water retention, and detention facilities should be constructed to curb the urban flash flooding at the Sungai Kayu Ara catchment.

Item Type:Book Section
Uncontrolled Keywords:Bootstrapping, Curve number
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:92494
Deposited By: Widya Wahid
Deposited On:30 Sep 2021 15:12
Last Modified:30 Sep 2021 15:12

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