A sponge city is an urban development concept designed to absorb, store, and purify rainwater, then release it when needed. This idea helps cities better manage stormwater, reduce flood risks, and improve urban resilience to climate change.

Key Features of a Sponge City:

Permeable surfaces: Pavements, roads, and sidewalks that allow water to seep through.Green infrastructure: Parks, wetlands, green roofs, and rain gardens to capture and filter rainwater.Water storage systems: Underground tanks and retention ponds to store excess water.Restoration of natural waterways: Reviving rivers, streams, and lakes for natural water management.

Benefits:Flood prevention

Improved water quality

Groundwater replenishment

Urban cooling and beautification

Biodiversity support

Examples of Sponge Cities:

China: Leading the movement, with pilot cities like Wuhan and Shenzhen.

Singapore: Through its Active, Beautiful, Clean Waters (ABC Waters) program.

Germany and the Netherlands: With innovative water-sensitive urban designs.