Bangkok is sinking, so it built a park to hold one million gallons of rainwater to prevent flooding

Bangkok is sinking, so it built a park to hold one million gallons of rainwater to prevent flooding

One of the larger anti-flooding projects is Chulalongkorn University Centenary Park, an 11-acre green space that can hold up to a million gallons of rainwater. Bangkok-based landscape architecture firm Landprocess designed the park to address flooding in its surrounding neighborhoods.

Here’s how it works.

One side of the park sits at an incline that helps funnel water into a giant container. The raised green roof directs runoff water through sloped rain gardens with native plants. The water then travels through an artificial wetland and drains into a large retention pond that soaks it up.

The wetland also acts as a filtration system, where the water can be treated for toxic materials.

In the case of severe flooding, the retention pond can nearly double in size by expanding onto the park’s main lawn. In total, the park can hold up to a million gallons of water.

Other sections of the park include an herb garden, trails, and a recreation area. A linear rain garden — which also absorbs water — lines the park’s perimeter to protect the outlying roads. These roads include bike lanes and wide walkways, so that the public can easily access the park on foot.

Bangkok, a mega-city of 20 million people, will continue to face the threat of sea-level rise and flooding.

While 11 acres only covers a small portion of the city, CU Park is a step toward a more resilient Bangkok.

📝 TED, Business Insider
✍️ Landprocess

Source:

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