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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Flood risk management and adaptation : Can fine resolution urban flood models increase spatial awareness of flood risk? results of a househ...
Can fine resolution urban flood models increase spatial awareness of flood risk? results of a household survey in newport beach, california
Author : BF SANDERS(1,*), RA MATTHEW(2) , D HOUSTON(2) , W CHEUNG (2) , B KARLIN(2), JE SCHUBERT(1), TW GALLIEN(3), A LUKE(1) ,V BASOLO(2) , A AGHAKOUCHAK(1) & DL FELDMAN(2)
ABSTRACT
Coastal communities around the world face significant and growing flood risks that require an accelerating adaptation
response, and fine-resolution urban flood models could serve a pivotal role in enabling communities to meet this need.
Such models depict impacts at the level of individual buildings and land parcels - the same spatial scale at which
individuals are best able to process flood risk information - constituting a powerful tool to help communities build better
understandings of flood vulnerabilities and identify cost-effective interventions. To measure understanding of flood risk
within a community and the potential impact of fine-resolution models, we carried out a household survey of flood risk
awareness in Newport Beach, California, a highly urbanized coastal lowland that presently experiences nuisance flooding
from high tides, waves and rainfall and is expected to experience a significant increase in flood frequency and intensity
with climate change. Interviews were completed with the aid of a wireless-enabled tablet device that respondents could
use to identify areas they understood to be at risk of flooding and to view either a Federal Emergency Management
Agency (FEMA) flood map or a more detailed map prepared with a hydrodynamic urban coastal flood model (UCI map)
built with grid cells as fine as 3 m resolution and validated with historical flood data. Results indicate differences in the
effectiveness of the UCI and FEMA maps at communicating the spatial distribution of flood risk, gender differences in how
the maps affect flood understanding, and spatial biases in the perception of flood vulnerabilities.
File Size : 502,593 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Flood risk management and adaptation
Date Published : 18/08/2015
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