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Region 3 NPL Vulnerability Mapping - SHC10.4.1.2 for Partner Presentation
Citation:
Whung, P., K. DeNardi, D. Greaves, B. Pluta, A. Ithier, M. Konfirst, J. Essoka, M. Mehaffey, S. Woznicki, AND R. Porter. Region 3 NPL Vulnerability Mapping - SHC10.4.1.2 for Partner Presentation. Region 3 Partners Meeting, Virtual, Virtual, June 21, 2022.
Impact/Purpose:
The purpose of this presentation is to share our FY22 SHC10.4.1.2 Sub-Product "Region 3 NPL Sites Flood/Climate Vulnerability Mapping" with the partners and seek for their additional inputs before our Product delivery.
Description:
The Region 3 NPL Sites Flood Vulnerability Mapping tool uses GIS analysis to quantify metrics in three categories: flood, sediment, and environmental justice. We completed the User’ Flood Vulnerability Index Calculator using 13 environmental and socioeconomic attributes (100- and 500-yr flood, storm surge, sea level rise, mean higher high water, sediment yield to river, active river area, proximity to other NPL sites, dasymetric population, population age <5 years old, population age >64 years old, minorities, low-income population, linguistically isolated population.) These users’ driven vulnerability indexes are then integrated into a community resilience planning tool with the option to weight the metrics based on user priority needs. The beta version of this mapping tool is live on the R3 Esri platform. Preliminary analysis of our study area in the Northeastern US indicates 87 of 168 NPL sites fall within the 100-yr floodplain; 43 of these 87 are within 5 mi of populations over 100,000. Approximately 15% of NPL sites flood vulnerability index falls between medium high and high vulnerability based on 100-yr flood, Cat. 4 storm surge, 0.5 m SLR, NPLs proximity within 5 mile buffer, dasymetric population within 5 mile buffer, sediment and community weighted as important and flood is weighted as extremely important. The NPL sites flood vulnerability mapping tool can inform climate preparedness for flood risks on Sites and underserved communities and other flood prone communities, be used in imminent disaster planning; e.g., hurricanes and inform Superfund 5-year Review process; e.g., help to determine if a remedy remains protective.