Can Malaysia turn monsoon floods into drought-proof water reserves instead?

KUALA LUMPUR, Nov 10 — Rainwater overflow during the monsoon season, often perceived as a threat of floods, could become a valuable resource in mitigating drought risks and ensuring water security in Malaysia. The key challenge lies in harvesting, storing, and reusing this excess water during hot weather to alleviate pressure on the water supply system and agricultural sector.

In preparation for the potential Super El Nino phenomenon in 2027, which could exacerbate drought conditions, Malaysia must focus on maximizing rainwater harvesting, particularly in regions that experience heavy rainfall such as the East Coast of Peninsular Malaysia, as well as Sabah and Sarawak. The implementation of the Riverbank Water Storage (TAPS) method, similar to the Raw Water Guarantee Scheme (SJAM) in Selangor, could serve as an alternative catchment area to provide a water reserve for two to three months during droughts or when water treatment plants are halted due to pollution.

Furthermore, optimising the operation of multi-purpose dams, utilizing smart weather forecasting technology for precise water release, and reducing the Non-Revenue Water (NRW) rate through improved infrastructure and distribution pressure management are crucial steps. Agricultural technology experts also emphasize the importance of collecting rainwater for non-drinking purposes, such as irrigation, and adopting water-saving technologies like drip irrigation and the Alternate Wetting and Drying (AWD) method for padi cultivation.

These measures aim to ensure sustainable agricultural practices and minimize the impact of water scarcity on crop yields and farmers' incomes.