What are the alternatives to surface retention ponds in KL?

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Kuala Lumpur is exploring underground retention ponds and inter-state cooperation for flood mitigation due to land scarcity.

Kuala Lumpur is confronting a significant challenge in securing land for new flood mitigation projects, prompting the exploration of alternative strategies beyond traditional surface retention ponds. One such innovative approach involves the construction of underground retention ponds located beneath existing public parks. This initiative aims to leverage underutilised urban spaces to enhance the city's capacity for managing stormwater and reducing flood risks.
Underground Retention Ponds Under Public Parks

The scarcity of available land within Kuala Lumpur has necessitated the adoption of alternative methods for flood management. City Hall is actively pursuing the development of underground retention ponds, a strategy that involves excavating beneath public parks to create these essential water management facilities. This approach allows for the expansion of flood control infrastructure without requiring the acquisition of new surface land, which is increasingly difficult to find.
Current and Completed Underground Projects

Evidence of this strategy's implementation is already visible in Kuala Lumpur. A new underground retention pond is currently under construction beneath Padang Merbok. Furthermore, an existing underground retention pond situated beneath the Perdana Botanical Gardens has demonstrated its effectiveness by contributing to a reduction in flooding in areas surrounding Parliament. These projects highlight a tangible shift towards subterranean solutions for flood resilience.
Private Sector Contribution to Retention Ponds

Beyond government-led initiatives, private developers have also played a role in increasing the number of retention ponds within the city. As a condition of their development approvals, private entities have constructed over 60 on-site retention ponds. These contributions supplement the city's efforts and demonstrate a broader engagement with flood mitigation measures across various development projects.
Collaboration with Neighbouring States

Recognising the limitations of land availability within the capital, there is a push for greater cooperation with neighbouring states, particularly Selangor. The Minister in the Prime Minister’s Department (Federal Territories) has indicated plans to meet with the Selangor Menteri Besar to discuss the joint development of retention ponds. The rationale is that Selangor possesses available land, which can be utilised in conjunction with Kuala Lumpur's expertise and needs to strengthen flood resilience across the broader region.

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What are the alternatives to surface retention ponds in KL?

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