ASSESSMENT OF GROUND WATER VULNERABILITY AND ITS APPLICATION TO THE DEVELOPMENT OF PROTECTION STRATEGY FOR THE WATER SUPPLY AQUIFER IN OWERRI, SOUTHEASTERN NIGERIA

摘要

Pollution vulnerability of the Owerri regional water supply aquifer was evaluated as a basis for developing appropriate protection strategy for the groundwater resource. The assessment was accomplished using Legrand, GOD, Siga and DRASTIC models. Techniques of the models generally involved parameters rating and point count systems, which are based on the evaluation of various parameter in relation to their capacity for enhancing or attenuating contaminants in the groundwater system.