Comparing Flood Models from Federal Emergency Management Agency (FEMA) and First Street Foundation’s Flood Factor to Evaluate Flood Risk in the Rouge River (MI) Watershed.
Topics: Geographic Information Science and Systems
, Hazards and Vulnerability
, Environment
Keywords: Flood management, risk assessment, social vulnerability, flood hazard areas, Michigan, Flood Factor, FEMA, GIS, geospatial analysis
Session Type: Virtual Guided Poster Abstract
Day: Saturday
Session Start / End Time: 2/26/2022 03:40 PM (Eastern Time (US & Canada)) - 2/26/2022 05:00 PM (Eastern Time (US & Canada))
Room: Virtual 33
Authors:
Atreyi Guin, Master of Science, Department of Natural Sciences, University of Michigan- Dearborn
Jacob Napieralski, Professor of Geology and GIS, Department of Natural Sciences, University of Michigan- Dearborn
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Abstract
Pluvial and fluvial flooding are intensifying due to increasing temperatures, precipitation and rapid urbanization. Such developments place an increasing number of people and capital at risk, which calls for public flood management as well as household level adaptation measures. Such actions can reduce social vulnerability to flooding and climate change. This study aims to compare predicted flood extent from Federal Emergency Management Agency’s (FEMA) National Flood Hazard Layers and First Street Foundation’s Flood Factor to analyze the percentage of properties at risk in the Rouge River Watershed of Southeast Michigan. Properties falling within FEMA’s special flood hazard zones will be compared against those representing a high Flood Factor and delineated to evaluate the flood risk based on their extent and land use. A socioeconomic analysis of at-risk properties may reveal significant patterns of vulnerability. FEMA’s flood zones are mapped based on historical data which might not consider intense rainfall, a growing problem as the atmosphere warms. First Street’s Flood Factor model is created using federal elevation and rainfall data and coastal flooding estimates from hurricanes, thus resulting in updated maps which show a vast increase in risk compared to official estimates. The findings of this study will recognize the estimation of flood hazard areas as an important approach for an effective flood management measure. This will further contribute while making critical decisions regarding flood mitigation procedures and protection of the anthropogenic and natural environment in the study area.
Comparing Flood Models from Federal Emergency Management Agency (FEMA) and First Street Foundation’s Flood Factor to Evaluate Flood Risk in the Rouge River (MI) Watershed.
Category
Virtual Guided Poster Abstract
Description
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