Flood Hazard Assessment of the Coast of Ghana

Authors: PETER ADORTSE*, Salem State University
Topics: Geographic Information Science and Systems, Africa, Hazards and Vulnerability
Keywords: Flood, Hazard, Coast, Ghana
Session Type: Poster
Day: 4/4/2019
Start / End Time: 8:00 AM / 9:40 AM
Room: Lincoln 2, Marriott, Exhibition Level
Presentation File: Download

As the planet continues to warm up at an alarming rate, the effect of increasing frequency of coastal flooding is already being felt in most coastal communities. The coastal cities of Ghana are no exception to this effect. Most cities on the eastern shorelines of Ghana’s coast already experience frequent inundation from regular high tides.

Ghana like most African countries have heavily populated coastal cities due to the concentration of the country’s economic infrastructure on the coast. The 550km coastline of Ghana is estimated to be occupied by about one fourth of the country’s population and hosts about 80% of the country’s industrial infrastructure. Prolonged and frequent flooding in these coastal cities will lead to extensive destruction of infrastructure, agricultural lands and wetlands. It is, therefore, imperative to develop reliable models in order to accurately forecast the future impact of coastal flooding.

This study seeks to provide an assessment of the flood hazard of the shorelines of Ghana using satellite imagery in Remote Sensing and GIS to provide a model for planning and managing coastal areas. A Digital Elevation Model (DEM) from the Shuttle Radar Topography Mission (SRTM) will be used to estimate 3 different scenarios of sea level rise at 2ft, 6ft and 10ft inundation of the coast of Ghana.

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