REGARDING “Better drainage capacity” in the Text Us column, Nov 25, about flooding along Federal Route 54 (Kepong-Sg Buloh) in the Klang Valley: Following heavy rainfall, a flash flood occurred in the area on Nov 18 at 5.20pm. According to the Petaling District Drainage and Irrigation Department (JPS), abnormally high rainfall (57mm) caused the nearby Sg Gasi to overflow into roadside drains and eventually the carriageway.
A Petaling District JKR department investigation determined the drainage system at the site is in good condition, physically and functionally. As a short-term countermeasure, the department carried out cleaning works – this was in addition to the yearly schedule.
The roadside drainage system is designed to cater only to surface water runoff within the JKR road reserve. Our assessment determined that the unusually heavy rainfall caused water from surrounding areas to also flow into the drains, which then overflowed. Thus, as a long-term measure, a localised hydrological study will be carried out to determine further action.
In addition, JKR will request JPS to investigate Sg Gasi’s capacity and implement improvement work if necessary to alleviate the issue. JKR will also engage with the local authority to ensure drainage water from surrounding areas does not flow into roadside drains and cause water to flood the carriageway.
PUBLIC WORKS DEPARTMENT MALAYSIA (JKR)
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