Title: Potential of roundabout as a stormwater detention basin in equatorial region

Authors: Siew Ling Loh; Darrien Yau Seng Mah

Addresses: Department of Civil Engineering, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia ' Department of Civil Engineering, Universiti Malaysia Sarawak, Kota Samarahan, Sarawak, Malaysia

Abstract: From the past experiences, flooding created large infrastructure problems for the city and a huge economic loss together with the damages of existing properties and goods. Therefore, this study was performed to investigate the potential of roundabout acting as a detention basin to relieve flash flood problems in equatorial region. With the aid of USEPA SWMM 5.0, rainfall-runoff simulation for existing drainage system was computed. Then, a stormwater detention basin was added to the system. As a result, Stutong roundabout in Kuching City with a basin depth of 1.2 m was capable of holding 100% of running water from the contributing catchment area. The methods implied that the size and depth of detention basin limited by the space of the Stutong roundabout were the main parameters that should be figured out first. Then, the contributing catchments allowed to be drained to the detention basin could be related.

Keywords: dry pond; runoff; storm water management model; SWMM; urban stormwater management.

DOI: 10.1504/IJHST.2020.104989

International Journal of Hydrology Science and Technology, 2020 Vol.10 No.1, pp.90 - 101

Received: 22 May 2017
Accepted: 20 Apr 2018
Published online: 10 Feb 2020 *

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