A comparative study of the pollution status of Sakumo II and Muni Lagoons in Ghana

摘要

The pollution status of Sakumo II and Muni Lagoons and Mamahuma and Gbagbla Ankonunfeeder streams, which feed Sakumo II along the coast of Ghana, were assessed and compared.nAs expected of saline waters, pH values of both lagoons fell within a slightly neutral to salinenrange whilst, the feeder streams were moderately saline. Conductivity distribution also showednsaline (.5.0mScm21) characteristics of the lagoons, while, the feeder streams are brackishn(1.5–5.0mScm21). DO concentrations in both lagoons indicated a wide variation. Relatively highnBOD and nutrients content of Sakumo II and the feeder streams suggested that, Sakumo II and itsnfeeder streams are moderately to grossly polluted. However, Muni Lagoon was characterizednby relatively low BOD and nutrients content suggesting relatively low anthropogenic impact.nThe ionic dominance patterns for Sakumo II and Muni Lagoons were: Na+ . Mg2+ . Ca2+ andnCl2 . HCO3n2 . SO422, Na+ . Ca2+ . Mg2+ and Cl2 . HCO3n2 . SO4 2 2, respectively. Using waternquality index (WQI), Sakumo II was found to be grossly polluted and requires mitigation measures,nwhile, Muni Lagoon was of fairly good quality and requires monitoring.