February 13, 2025

Sponge city

Current Context : The emerging concept and construction of “sponge cities” is an effective approach to solving urban floods.

About Sponge city:

Sponge cities use green infrastructure to absorb, store, and manage rainwater sustainably, mitigating urban flooding and water scarcity issues.

Features:

  • Green roofs, urban gardens, permeable pavements, and rain gardens.
  • Infrastructure like infiltration and retention systems to manage stormwater​

Benefits:

  • Improved urban flood management and water quality.
  • Enhanced air humidity and microclimate regulation.
  • Reduced urban heat islands and health risks​

Examples:

  • Berlin, Germany: Green roofs and vertical gardens.
  • Tirana, Albania: Ring forest projects.

China: Integrated sponge city designs addressing urban flooding​

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