Authors :
Agnes Ndong; Ousmane colly Diouf
Volume/Issue :
Volume 11 - 2026, Issue 6 - June
Google Scholar :
https://tinyurl.com/3h72pn6j
Scribd :
https://tinyurl.com/vxeafhrv
DOI :
https://doi.org/10.38124/ijisrt/26jun1258
Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.
Abstract :
The Tambacounda watershed, located in eastern Senegal (West Africa), constitutes one of the major hydrological
units draining toward the Gambia River system. Covering a total area of approximately 42,364 km², the watershed presents
a complex geomorphological framework shaped by millions of years of geological history, tectonic inheritance, and intense
tropical weathering. This article provides a comprehensive analysis of the geomorphology of the Tambacounda watershed,
examining its structural geology, relief classification, drainage network, weathering processes, soil formation, and their
implications for hydrological modeling and land resource management. Elevation ranges from -12 m in river valley floors
to 330 m in the northeastern highlands, with a dominant west-to-east gradient reflecting the transition from the flat
Senegalese interior plains toward the Fouta Djallon foothills.
Keywords :
Watershed, Tambacounda, Hdrogeology, SRTM 30m, RCP4.5, RCP4.8, SWAT Modelling.
References :
- IAEA Infcis. Senegal Geology. IAEA INFCIS Country Reports.
- BGS Earthwise. Hydrogeology of Senegal. British Geological Survey.
- Schluter, T. (2008). Geological Atlas of Africa (2nd ed.). Springer, Berlin.
- USGS. (2003). Assessment of Undiscovered Oil and Gas in the Senegal Basin. USGS Bulletin 2207-A.
- Mamedov et al. (2022). Fouta Djallon-Mandingo Bauxite Province: Geomorphic Factors.Geology of Ore Deposits.
- Badji et al. (2026). Flood Risk Assessment in Irrigated Banana Perimeters of Tambacounda.SCIRP.
- HydroSHEDS / SRTM 30m: NASA Shuttle Radar Topography Mission. USGS EarthExplorer.
- Tappan et al. (2004); Mbow et al. (2003); Faye et al. (2016) — LULC Tambacounda region.
The Tambacounda watershed, located in eastern Senegal (West Africa), constitutes one of the major hydrological
units draining toward the Gambia River system. Covering a total area of approximately 42,364 km², the watershed presents
a complex geomorphological framework shaped by millions of years of geological history, tectonic inheritance, and intense
tropical weathering. This article provides a comprehensive analysis of the geomorphology of the Tambacounda watershed,
examining its structural geology, relief classification, drainage network, weathering processes, soil formation, and their
implications for hydrological modeling and land resource management. Elevation ranges from -12 m in river valley floors
to 330 m in the northeastern highlands, with a dominant west-to-east gradient reflecting the transition from the flat
Senegalese interior plains toward the Fouta Djallon foothills.
Keywords :
Watershed, Tambacounda, Hdrogeology, SRTM 30m, RCP4.5, RCP4.8, SWAT Modelling.
