South Korea has increased its flood-control capacity by approximately 10% to reach about 108 billion tons [1], according to the government.
This strategic shift aims to protect the country from severe summer flooding by maximizing the volume of water that reservoirs can hold during peak rainfall. However, the decision to lower water levels in agricultural reservoirs to make room for floodwaters may reduce the nation's ability to combat future droughts.
Minister Kim Sung-hwan of the Ministry of Climate, Energy and Environment announced the measures during a recent cabinet meeting. Kim said the government has expanded the "water bowl" used for flood control to manage the risks associated with the upcoming rainy season [1].
The plan involves drawing more water out of existing agricultural reservoirs to create additional storage space. This approach allows the government to utilize current infrastructure more aggressively without the immediate need for new construction projects.
Financial benefits are also expected from the updated operational strategy. The government expects to save 4 trillion won [2] through the specific operation of three dams located on the Hantan River [2].
While the immediate focus is on flood prevention, the strategy creates a tension between two different climate risks. By keeping reservoirs lower to prevent overflows, the Ministry risks having insufficient water reserves if the region experiences a dry spell following the flood season [1].
“The government has significantly expanded the 'water bowl' used for flood control”
South Korea is prioritizing immediate disaster mitigation and budgetary efficiency over long-term water security. By repurposing agricultural reservoirs for flood control, the government is accepting a higher risk of drought to avoid the catastrophic infrastructure damage and loss of life associated with summer floods.
