An assessment of heavy metals in soil,water,sedimets and certain plant taxa in Imo and New Calabar river systems was carried out.Seven sapling stations were established per river course.Biota(plant parts),sediment, water and soil were sampled and analysed for cadmium(cd), Mercury(cr) and Zinz(Zn).Thirthy species of plants consistiong of a mixture of species of vegetation from lowland,freshwater and mangrovve forest zones were sampled.Four sampling regimes were carried out for two seasons.The data generated was analysed by analysis of variance(ANOVA) and student t-test at 0.5% significance level using Statistical Package for Social Scientists(SPSS).Zn was the most freguently and abundant metal followed by Pb.Hg was the rarest element.There was significant variation in metal concentration between the two rivers with Imo river samples exhibiting higher concentrations than samples from New Calabar river.The soil samples from Imo river had significantly higher concentrations of Pb(2.563mg/100g)Cr(2.704mg/100g,Ni(3.042mg/100g)Zn(4.459mg/100g) than soil of Nwe Calabar for example.The metal concentrations in soil samples were higher during the dry season than wetb seasons.The water samples had less metal concentrations than that of sediment and soil.The defference in metal concentration per sampling point was significant(at5%) in New Calabar but not Imo River.There was no variation in metal concentration between similar plants in same and different locations.Metal levels were above the internationally acceptable levels/standards for safety of organisms.Such levels could possibly lead to metal poisioning hadard overtime to the human population via foodcain/food web.More studies are needed to generate indiginous data base for evaluation of regulatory standards.