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The Web-GIS TRIG Eau Platform to Assess Urban Flood Mitigation by Domestic Rainwater Harvesting Systems in Two Residential Settlements in Italy

Author

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  • Anna Palla

    (Department of Civil, Chemical and Environmental Engineering, University of Genova, 16145 Genoa, Italy)

  • Ilaria Gnecco

    (Department of Civil, Chemical and Environmental Engineering, University of Genova, 16145 Genoa, Italy)

Abstract

Urban flooding has become one of the most frequent natural disasters in recent years, and the low-impact development (LID) approach is currently recognised as an alternative to traditional grey infrastructure to mitigate the negative impact of urbanisation on hydrological processes. The main objective of the present research was to develop a web-GIS platform in order to assess the impact of LID systems on mitigating urban flooding and to support their implementation at the urban catchment scale. The TRIG Eau platform, developed in the framework of the homonymous INTERREG MARITTIMO IT-FR project, is configured as a web-GIS application of the stormwater management model (SWMM). Urban flood conditions were examined for two case studies in Liguria and Tuscany (IT), where DRWH systems are proposed as a mitigation strategy. The presented results and their visualisation showcase the potential of the TRIG Eau platform to better support the implementation of LIDs. Findings from the flood analysis confirm that even for the 10-year return period event, DRWHs are effective in reducing network stress by more than 70% in cases of empty tanks, thus underlining the need for RTC technology to pre-empty the system.

Suggested Citation

  • Anna Palla & Ilaria Gnecco, 2021. "The Web-GIS TRIG Eau Platform to Assess Urban Flood Mitigation by Domestic Rainwater Harvesting Systems in Two Residential Settlements in Italy," Sustainability, MDPI, vol. 13(13), pages 1-17, June.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:13:p:7241-:d:584131
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    References listed on IDEAS

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    1. Peter Roebeling & Miguel Saraiva & Anna Palla & Ilaria Gnecco & Carla Teotónio & Teresa Fidelis & Filomena Martins & Henrique Alves & João Rocha, 2017. "Assessing the socio-economic impacts of green/blue space, urban residential and road infrastructure projects in the Confluence (Lyon): a hedonic pricing simulation approach," Journal of Environmental Planning and Management, Taylor & Francis Journals, vol. 60(3), pages 482-499, March.
    2. Lin Lin & Zening Wu & Qiuhua Liang, 2019. "Urban flood susceptibility analysis using a GIS-based multi-criteria analysis framework," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 97(2), pages 455-475, June.
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    Cited by:

    1. Anna Palla & Ilaria Gnecco, 2022. "On the Effectiveness of Domestic Rainwater Harvesting Systems to Support Urban Flood Resilience," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 36(15), pages 5897-5914, December.

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