Project Objective
As part of a multidisciplinary team, Geosyntec conducted the coastal hazard assessment component of a coastal vulnerability assessment.
Scope of Services
Geosyntec practitioners estimated future coastal-flood risks from increased storm-surge elevations and wave heights at Atlantic Beach using sea-level-rise (SLR) projections. To do this, we performed site-specific modeling using FEMA’s Coastal Hazard Analysis and Mapping Program (CHAMP) Version 2.0 model suite.
Notable Accomplishments
The overall vulnerability assessment reflects forward-thinking modeling while adhering to the US Federal Emergency Management Agency (FEMA) method to project the likelihood of 100-year floods 25, 50, and 100 years in the future. The assessment produced a series of flood maps using this method and also calculatied future SLR, which FEMA does not do. As a result, Atlantic Beach now has a new set of flood insurance rate maps that take into account SLR conditions. The data indicate that SLR will be 1.3 feet in 25 years; 2.9 feet in 50 years; and 7.0 feet in 100 years.
The Northeast Florida Regional Council (NEFRC) honored the City of Atlantic Beach with a Regional Award for its coastal vulnerability assessment.
Note: At the time of this project, Geosyntec practitioners were contracted as ATM, which was acquired by Geosyntec.
Quick Qual
Project Summary
- Location: Atlantic Beach, Florida
- Client: The City of Atlantic Beach
- Project Practice Areas: Coastal & Waterfront
- Type of Facility: Municipality
- Services Provided: Calculation of future 100-year coastal-flood hazards due to anticipated SLR; Site-specific coastal-hazard modeling; Flood-hazard mapping
- Type of Work: Climate Resiliency, Flood-Risk Assessment
