evidoria

← Back to browse

Good practice Imported

Chulalongkorn University Centenary Park — Green Infrastructure Flood Retention (Bangkok, Thailand)

Thailand · Bangkok · See the Thailand profile · See the Bangkok profile

Evidence: Descriptive / self-reported Top 84% 33/100 · Ask Evidence Copilot about this practice

Chulalongkorn University's 4.5-hectare Centenary Park uses a tilted green roof, wetlands and underground cisterns to retain up to 3.8 million litres of stormwater, easing flood risk in central Bangkok without new grey infrastructure.

4.5 hectares (28 rai)
Park site area
up to 3.8 million litres (1 million gallons)
Stormwater retention capacity
Chulalongkorn University Centenary Park — Green Infrastructure Flood Retention (Bangkok, Thailand)

Details

Maturity
Established
Promoter
Chulalongkorn University / Landprocess
Period
2017–present
Keywords
green infrastructure, landscape architecture, stormwater management, urban parks

Context

Opened in 2017 on a 4.5-hectare (28-rai) site donated by Chulalongkorn University, Centenary Park was Bangkok's first new public park in three decades and one of the city's first major pieces of nature-based flood infrastructure. Designed by landscape architect Kotchakorn Voraakhom's firm Landprocess, the park is tilted at a 3-degree grade so rainwater flows from a green roof into constructed wetlands, a retention pond and underground cisterns.

Results

The system can hold up to one million gallons (about 3.8 million litres) of stormwater during heavy rain, doubling the retention pond's capacity in extreme events and easing pressure on Bangkok's overloaded drainage network without new grey infrastructure. The project won the American Society of Landscape Architects' 2019 Professional Award and the Landezine International Landscape Award, and has been cited by TED and PreventionWeb as a model other flood-prone Asian cities are studying.

Implementation
Indicative cost
Low (< €50k)
Time to results
Long (> 3 years) — Opened 2017, operating continuously since.
Staffing & skills
Chulalongkorn University (site donor/owner), Landprocess landscape-architecture firm (design, led by Kotchakorn Voraakhom)

Conditions for success

  • Availability of donated land at sufficient scale to integrate a green roof, constructed wetlands, retention pond and underground cisterns
  • Site grading (3-degree tilt) engineered to direct rainwater through the retention sequence

Common failure modes

  • Retention capacity (3.8 million litres) is modest relative to Bangkok's citywide flood risk; no measured citywide flood-damage reduction has been documented

Do you run this practice? Claim it — verified implementers get a public contact pathway and can propose corrections.

Data sources

Where this practice's information was retrieved from, and when.

Attachments

Similar practices you may find useful