A STATUS REVIEW OF THE HYDROLOGICAL CHARACTERIZATION OF THE BASEMENT COMPLEX AQUIFERS IN TARABA STATE, N. E. NIGERIA
Abstract
The availability and access to fresh water is an important issue all over the world. Groundwater
constitutes the only reliable water supply for drinking and irrigation purposes. Recently there has
been increased interest in ground water resources resulting from a combination of an increase in
its development for public and domestic use; an increase in mining, agricultural, and industrial
activities which might impact ground water quality; and an increase in studies of already
contaminated aquifers. Decision-making agencies involved in these groundwater activities
require studies of the aquifers to develop reliable information on the hydrologic properties and
behaviour of aquifers and aquitards. Aquifer testing is a common tool used by hydrogeologists to
characterize aquifers flow system boundaries. The most reliable type of aquifer test usually
conducted is a pumping test. Pumping tests are a practical and reliable means of estimating aquifer
hydraulic properties, well performance, yield, zone of influence of the well and boundary
conditions. Proper pumping test practices greatly assist in the interpretation and the value of the
pumping test data. This paper is a review of methods of pumping test analysis and use of hydraulic
parameters obtained in characterization of aquifer. A case history of the use of pumping test
analysis in aquifer characterization in some parts of Nigeria is also highlighted.
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