Integrating resident digital sketch maps with expert knowledge to assess spatial knowledge of flood risk: A case study of participatory mapping in Newport Beach, California

摘要: Public participation geographic information systems (PPGIS) have been increasingly used to assess resident spatial knowledge of environmental hazards and validate supplement expert estimates hazardous areas with local knowledge, but few studies demonstrated methods for directly comparing the distribution hazards. This study collected PPGIS digital sketch maps flood-prone from 166 residents living adjacent Newport Bay Estuary in Southern California examine variations flood risk. First, we assessed agreement among participants found that a higher percentage homeowner, older, income had greater regarding at risk flooding. Second, introduced composite indices between participant sketches modeled hazards, level varied by scale analysis personal contextual factors. Respondents educational attainment, household income, homeownership were associated areas. Results inform aspects planning communication demonstrating how can be identify potential shortcomings hazard models, as well where perception may weak.