Malaysia is fortunate to be spared from major natural disasters like typhoons and earthquakes, but flooding remains a significant challenge during the monsoon season.
When it comes to drainage systems, historical flash flood occurrences in Malaysia show that silt, rubbish and other obstacles reduce the carrying capacity of the drainage system by up to 50 percent, resulting in flood disasters.
As the country continues to grapple with the impact of seasonal flooding, addressing long-term solutions is crucial. In the 2025 budget, the government has allocated RM150 million to local authorities and the Department of Irrigation and Drainage (DID) to begin cleaning drains and dredging rivers in flood-hit areas.
Prime Minister Anwar Ibrahim, said that this allocation is intended to address the recent flash floods that hit the capital and several major towns.
Flood Risks, Drain Cleaning and Mitigation Measures
“Certain areas in Malaysia are particularly vulnerable to flooding due to factors such as poor waste management, which leads to blockages in the drainage systems. Drains require continuous cleaning year-round, as improperly discarded rubbish can impede water flow. Additionally, flood prevention efforts including drain widening and upgrading their capacity are essential to reduce the risk of flash floods, said State Assemblyman YB Rajiv Rishyakaran.
“DID, along with Local Authorities, are focusing on specific measures to address these issues. This includes regular drain cleaning and infrastructure improvements such as retention ponds, and widening rivers to accommodate faster rainfall and sudden water surges. Each area faces unique challenges, and flood prevention solutions need to be tailored to the specific needs of the region to optimise spending and ensure effective results,” he explained.
The RM150 million allocation aims to support these long-term strategies by funding necessary projects, including regular drain cleaning and upgrades. These efforts are part of an ongoing commitment to reduce the impact of flooding, with projects expected to be carried out continuously. Drain cleaning is an ongoing task, while upgrades to drainage infrastructure will remain a priority every year.
The immediate allocation from the government underscores the urgency for local authorities and the DID to accelerate efforts in cleaning drains and dredging rivers to improve irrigation and drainage systems, according to Dr. Mohammad Fajar Ikhsan, a senior lecturer at the Centre for International Studies, Universiti Utara Malaysia.
He explained that many urban drainage systems are inherited from pre-independence designs that are not equipped to manage heavy rainfall, leading to road overflows. The allocation could help minimise infrastructure damage and reduce the risk of casualties commonly associated with flash floods.
To ensure prompt implementation, DID and local authorities are allowed to carry out procurements of up to RM1 million through quotation methods or by tendering among registered G1 to G3 contractors. Meanwhile, Anwar said that the government has successfully completed eight flood mitigation projects valued at RM540 million.
"Twelve flood mitigation projects costing RM3 billion are being implemented and progressing on schedule, including in Sungai Damansara, Selangor; Sungai Likas in Kota Kinabalu, Sabah; Sungai Triang in Bera, Pahang; Sungai Tepoh and Banggol Air Lilih in Kuala Nerus, Terengganu; and the Integrated River Basin Development Phase 2 for the Kelantan River in Kota Bharu," he said.
The Malaysian government’s allocation is a significant step forward, it must be complemented by sustained efforts in community engagement, infrastructure development, and environmental stewardship to create a resilient framework capable of addressing Malaysia's flooding challenges effectively. Collaboration between local authorities, DID, and residents will be crucial in ensuring that these initiatives improve flood preparedness and response.
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