A GIS – BASED FLOOD RISK MAPPING: A CASE STUDY IN PRU DISTRICT OF GHANA | Journal of Global Ecology

The occurrence of torrential rains and their impacts on river discharge usually result in flooding within communities along river banks, as well as in areas of the community with poor drainage systems and land shapes. Advances in Remote Sensing technology have made flood zoning studies more efficient in recent years. For the first time, the Geographic Information System (GIS) and Remote Sensing techniques were combined in this work to map out flood risk zones in Ghana's Pru District. The District's flood risk map was created using the SRTM 90 m DEM, which classed the flood risk zones as high, medium, and low. According to the extent utilised, 3,246.26 km2 (52.68%) of the land area is within the high flood risk zone, 754.54 km2 (12.24%) is within the medium flood risk zone, and 2,161.79 km2 (35.08%) is within the low flood risk zone. Communities in the District's North-Eastern and Central sections were particularly hard damaged by floods and were classified as high flood risk zones.

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