This study was carried out to investigate the concentrations of Cadmium (Cd), Chromium (Cr), Copper (Cu), Manganese (Mn), lead (Pb) and Zinc (Zn) and the geo-accumulation index (Igeo) of Cd, Cr, Cu, Mn, Pb and Zn in the sediments of Lake Chad, Nigerian sector. The aims of the study wasto determine the heavy metals pollution in the sediment of lake chad, Nigerian sector and (2) to evaluate the degree of heavy metals pollution of the lake using the Geoaccumulation index. The concertation of the heavy metals, were determined using energy disperse x-ray fluorescence (EDXRF). Sediments sample were obtained at Dumba1, Baga, Lake Chad, Nigerian sector. The results indicated that the concentration of heavy metals in mg/kg as Cd (2.62 + 0.20 mg/kg), Cr (63.73 ± 0.25 mg/kg), Cu (19.49 ± 0.23mg/kg), Mn (1325.00± mg/kg), Pb (133.33 ± 5.23mg/kg) and Zn (195.20 ± 5.20mg/kg) and they were compared with standard, average shale to determine the pollution status of the lake. The results shows that the sediments of the lake have been polluted by Cd, Mn, Pb, and Zn. The geoaccumulation index (Igeo) values for Cd, Cr, Cu, Mn, Pb, and Zn varied between 0.09 to 1.75. The Igeo, 0.09 for Cu indicated unpolluted sediments, the Igco values for Cr, Mn, and Zn indicated unpolluted to moderately polluted, while Cd and Pb Igeo values indicated moderately polluted sediments quality.
