The distribution of some heavy metals,namely Cd, Pb, Zn, Fe, Cu, Cr and Mn in epipellic sediments of Igbede, Ojo and Ojora rivers of Lagos was studied weekly in the early summer (November) of 2003. The levels of selected trace metals were determined using Atomic Absorption Spectrophotometer(UNICAM 969 AAS SOLAR). Trends in heavy metal burdens in the sediments revealed weekly variations in all…