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

  • E. R. Akpan Institute of Oceanography, University of Calabar, P.M.B. 1115, Calabar, Nigeria
  • H. E. Ekpo Department of Chemistry, University of Calabar, P.M.B. 1115, Calabar, Nigeria
  • U.J. Ekpe Department of Chemistry, University of Calabar, P.M.B. 1115, Calabar, Nigeria

Abstract

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]
Published
2004-01-15
Section
Articles

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eISSN: 1596-6194