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Sustainable Stormwater Management: Runoff Impact of Urban Land Layout with Multi-Level Impervious Surface Coverage

Author

Listed:
  • Zheng Yin

    (School of Architecture, Huaqiao University, Xiamen 361021, China)

  • Gong Liu

    (School of Architecture, Huaqiao University, Xiamen 361021, China)

  • Zhi Zheng

    (School of Architecture, Huaqiao University, Xiamen 361021, China
    Institute of Urban and Rural Construction and Environmental Protection, Huaqiao University, Quanzhou 362021, China)

  • Xinru Li

    (School of Architecture, Huaqiao University, Xiamen 361021, China)

Abstract

The expansion of urban impervious surfaces exacerbates flooding risks, influenced by both impervious surface coverage (ISC) and its spatial distribution. To investigate the impact of urban land use layouts on stormwater runoff, this study examined the current land use conditions in the Xinling Bay watershed of Xiamen, China, and generalized land use into three ISC classes: impervious (I, ISC = 100%), semi-pervious (S, ISC = 50%), and pervious (P, ISC = 0%). Six spatial layouts (ISP, IPS, SIP, PIS, SPI, and PSI) were modeled using SWMM under varying rainfall intensities and land unit scales. The influence of ISC layouts on peak runoff, peak time, and total runoff was simulated. The results indicate: (1) The IPS spatial layout yields the most effective stormwater mitigation; (2) Prioritizing impervious land upstream while avoiding pervious units upstream minimizes runoff; (3) Layout effects weaken with higher rainfall intensity but strengthen with larger scales. These findings provide actionable strategies for sustainable urban planning to enhance flood resilience through spatial distribution optimization.

Suggested Citation

  • Zheng Yin & Gong Liu & Zhi Zheng & Xinru Li, 2025. "Sustainable Stormwater Management: Runoff Impact of Urban Land Layout with Multi-Level Impervious Surface Coverage," Sustainability, MDPI, vol. 17(8), pages 1-13, April.
  • Handle: RePEc:gam:jsusta:v:17:y:2025:i:8:p:3511-:d:1634513
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    References listed on IDEAS

    as
    1. Bei Li & Sheng Jiao & Yuan Zhou & Min Zhou, 2024. "The Causes of Waterlogging in Chinese Southern Hilly Cities Based on Hydrological Processes," Sustainability, MDPI, vol. 16(17), pages 1-19, September.
    2. Zhou, Long & Shen, Guoqiang & Li, Chaosu & Chen, Tian & Li, Sihong & Brown, Robert, 2021. "Impacts of land covers on stormwater runoff and urban development: A land use and parcel based regression approach," Land Use Policy, Elsevier, vol. 103(C).
    3. Hyun Woo Kim & Ming-Han Li, 2016. "Sustainable Stormwater Management: Examining the Role of Local Planning Capacity in Mitigating Peak Surface Runoff," Sustainability, MDPI, vol. 8(9), pages 1-19, August.
    4. Gang Fang & Han Li & Jie Dong & Hanyang Teng & Renato Dan A. Pablo & Yin Zhu, 2023. "Extraction and Spatiotemporal Evolution Analysis of Impervious Surface and Surface Runoff in Main Urban Region of Hefei City, China," Sustainability, MDPI, vol. 15(13), pages 1-17, July.
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