GC53A-1180
Coproduction of flood hazard assessment with public participation geographic information system
Friday, 18 December 2015
Poster Hall (Moscone South)
Wing H Cheung1, Douglas Houston1, Jochen Schubert2, Victoria Basolo1, David Feldman1, Richard Matthew1, Brett F Sanders2, Beth Karlin3, Kristen Goodrich3, Santina Contreras1, Abigail Reyes4, Kimberly Serrano4 and Adam Luke2, (1)University of California Irvine, Planning, Policy and Design, Irvine, CA, United States, (2)University of California Irvine, Civil and Environmental Engineering, Irvine, CA, United States, (3)University of California Irvine, Social Ecology, Irvine, CA, United States, (4)University of California Irvine, Sustainability Initiatives, Irvine, CA, United States
Abstract:
While advances in computing have enabled the development of more precise and accurate flood models, there is growing interest in the role of crowdsourced local knowledge in flood modeling and flood hazard assessment. In an effort to incorporate the “wisdom of the crowd” in the identification and mitigation of flood hazard, this public participation geographic information system (PPGIS) study leveraged tablet computers and cloud computing to collect mental maps of flooding from 166 households in Newport Beach, California. The mental maps were analyzed using GIS techniques and compared with professional hydrodynamic model of coastal flooding. The results revealed varying levels of agreement between residents’ mental maps and professional model of flood risk in regions with different personal and contextual characteristics. The quantification of agreement using composite indices can help validate professional models, and can also alert planners and decisionmakers of the need to increase flood awareness among specific populations.
