The urban implications of pluvial flooding
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Bradbury, Matthew
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2025-11-03
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Conference Contribution - Oral Presentation
Ngā Upoko Tukutuku (Māori subject headings)
Keyword
New Zealand
Auckland (N.Z.)
urban flooding
flooding
flood resilient architecture
housing in Auckland
climate change
adaptation strategies
Auckland (N.Z.)
urban flooding
flooding
flood resilient architecture
housing in Auckland
climate change
adaptation strategies
ANZSRC Field of Research Code (2020)
Citation
Bradbury, M.A. (2025, November, 3). The urban implications of pluvial flooding [Paper presentation]. New Zealand Institute of Architects Warkworth Branch Conference 2025, Warkworth, New Zealand.
https://hdl.handle.net/10652/7159
Abstract
Building urban resilience to the effects of flooding emeans that an understanding of ecological systems in the city is necessary to address the problems. Engaging with the ecology of the urban development site, not as a fixed system but as a fluid set of environmental conditions, will help to both understand and address the dynamic effects of climate change.
Practical strategies for climate change: building urban resilience to flooding
1 Protect and enhance natural spaces
By protecting and, where necessary, restoring natural spaces within the catchment, the ability to deal with environmental problems such as littoral and pluvial flooding is increased.
2 Restore/enable/protect biodiversity
Restoring, enabling, and protecting indigenous terrestrial and aquatic biodiversity is critical to ensuring the continuing ecological health of a catchment. This can be helped by protecting any existing indigenous ecotones and indigenous habitats.
3 Protect riparian margins
Protection of riparian margins is critical to the protection of stream networks. This goal can be accomplished with the indigenous planting of high biomass species in a buffer zone around the stream, which helps to increase aquatic and terrestrial biodiversity within the riparian corridors.
4 Reduce impervious surfaces
Reducing the percentage of impervious surfaces within the catchment helps to reduce the amount of stormwater run-off. This can be achieved by minimizing surfaces that drain directly into waterways.
5 New urban form through clustering
Clustering the building program maintains and helps to restore the existing hydrological network within the catchment, allowing development to be accommodated on sites that are smaller and less environmentally sensitive
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