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Evaluation of vulnerability to floods of Glynn and Gwinnett Counties, Georgia USA

Author Affiliations

  • 1North Gwinnett High School, Suwanee, GA USA
  • 2Dept. of Civil and Urban Engineering, Tandon School of Engineering, New York University, New York, USA

Res. J. Recent Sci., Volume 9, Issue (1), Pages 12-18, January,2 (2020)


A systematic investigation was performed to evaluate the areas of inundation in Gwinnett and Glynn counties in Georgia, USA. To identify areas where benefited from the flood protection, 100-year, 200-year and 500-year of riverine flooding and previous hurricanes data were adopted for Gwinnett county and Glynn county, respectively. HAZUS 4.2 (Hazard United States) (FEMA, 2018), and ArcGIS 10.5 (Aeronautical Reconnaissance Coverage Geographic Information System) were used to identify the flooded areas, and this study evaluates the vulnerability of essential facilities (i.e., treatment plants and electric power facilities). It is observed that several wastewater treatment plants in Gwinnett County could be impacted by at least the100-year flood. The electrical power facilities in Glynn County are also found to be vulnerable to hurricanes. This evaluation can be used as the first step to develop more resilient counties by having better preparedness, Stormwater Management Plan, and more organized responses to flood events.


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