Shoreline Change Analysis of the Eastern Coast of Ghana between 1991 and 2020

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Dzifa Adimle Puplampu
Khiddir Iddris
Victor Alorbu
Jonathan Otumfuor Asante
Judges Laar Takaman
Alex Barimah Owusu


The Eastern Coastline of Ghana is facing intense natural and anthropogenic disturbances, which pose a serious threat to the coastal community, ecosystem, and livelihoods. This study assessed the shoreline changes occurring along the Eastern Coast of Ghana stretching 149 km from Laloi Lagoon West of Prampram to Aflao, Ghana. The study utilizes satellite images from Landsat 4TM, Landsat 7 ETM+, and Landsat 8 OLI taken between 1991 and 2020. Data pre-processing techniques using ENVI 5.3 included calibration, layer stacking, mosaicking, and supervised classification. Post-classification shorelines were extracted using ArcGIS 10.7, and the DSAS tool was used to determine the rate of change over the 29-year period. The results showed that the coastline experienced an average erosion rate of 9 m/y and a maximum rate of 24 m/y, however, the accretion rate (3 m/y) was much lower, reflecting general coastline retreat. Thus, some 25 coastal communities are highly exposed to shoreline erosion. Sustaining the coastal area may require coastline re-engineering interventions. This study recommends continuous monitoring of the shorelines to ensure the protection of livelihoods. Implementation of both hard engineering and ecosystem-based adaptation strategies may be required to achieve holistic results toward sustainable coastal management.


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Puplampu, Dzifa Adimle, Khiddir Iddris, Victor Alorbu, Jonathan Otumfuor Asante, Judges Laar Takaman, and Alex Barimah Owusu. 2023. “Shoreline Change Analysis of the Eastern Coast of Ghana Between 1991 and 2020”. Journal of Environmental Geography 16 (1-4):11-21.
Author Biographies

Dzifa Adimle Puplampu, University of Ghana

Remote Sensing and GIS Laboratory, Department of Geography and Resource Development

Khiddir Iddris, University of Ghana

Remote Sensing and GIS Laboratory, Department of Geography and Resource Development

Victor Alorbu, University of Ghana

Remote Sensing and GIS Laboratory, Department of Geography and Resource Development

Jonathan Otumfuor Asante, University of Ghana

Remote Sensing and GIS Laboratory, Department of Geography and Resource Development

Judges Laar Takaman, University of Ghana

Remote Sensing and GIS Laboratory, Department of Geography and Resource Development

Alex Barimah Owusu, University of Ghana

Remote Sensing and GIS Laboratory, Department of Geography and Resource Development


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