Global Journal of Environmental Sciences

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Establishment of water quality classification scheme: a case study of Calabar River Estuary, Nigeria

E. R. Akpan, H. E. Ekpo, U.J. Ekpe


A water quality classification scheme based on 11 routinely measured physicochemical variables has been developed for the Calabar River Estuary. The variables considered include water temperature, pH. Eh, DO, DO saturation, BOD5, COD, TSS, turbidity, NH4-N and electrical conductivity. Classification of water source is performed by reference to mathematically derived Quality index and Quality classification tables. The derivation and application of these models as well as their significance are discussed.

Key Words: Water quality, Calabar River Estuary, Nigeria

[Global Jnl Environ Sci Vol.2(1) 2003: 67-71]
AJOL African Journals Online