Back
 GEP  Vol.5 No.11 , November 2017
Typical Hydraulic Properties of Deep Aquifers of Niger Delta from Pumping Test Data
Abstract: The hydraulic properties of deeper Coastal Plain Sands, which form the main aquifer in the Niger Delta, were investigated around Eleme, Rivers State. The intent was to find out if frequent well failure was as a result of the aquifer not having enough transmitting capacity to sustain the huge withdrawal necessary for Eleme and its environs where demand for groundwater withdrawal is very high because Eleme axis serves as a major industrial axis of River State or whether the frequent well failure was due to inefficient well construction practice. Constant discharge pumping tests were conducted in 8 deep borehole (250 - 310 m). Data generated during the test were analysed using Cooper-Jacob’s straight line method. The calculated transmissivity of the aquifers ranged from 1324 m2/day - 5815 m2/day. These values when compared with transmissivity values elsewhere indicate that the aquifers in the study area have excellent water yielding properties, plotting within the range of “Very Good” in water transmitting capacity scale. Coefficient of permeability ranged from 13.65 m/d - 59.9 m/d. Coefficient of Storage ranged from 28.2 × 10-5 - 29.1 × 10-5 while the Specific capacities of the wells ranged from 48.75 3 - 78.13 m3/d/m. It is concluded that the deep aquifers of the Niger Delta do possess the capacity to produce and sustain large groundwater withdrawal. It is further recommended that competent drilling contractors be engaged in deep well construction in the area.
Cite this paper: Ngah, S. and Eze, C. (2017) Typical Hydraulic Properties of Deep Aquifers of Niger Delta from Pumping Test Data. Journal of Geoscience and Environment Protection, 5, 139-148. doi: 10.4236/gep.2017.511010.
References

[1]   Etu-Effeotor, J.O. and Odigi, M.I. (1983) Water Supply Problems in the Eastern Niger, Delta. Jl. Nigerian Min. Geosci. Assoc., 20, 183-192.

[2]   Amajor, L.C. (1991) Aquifers in the Benin Formation (Miocene-Recent) Eastern Niger Delta, Nigeria: Lithostraigraphy, Hydraulics and Water Quality. Environmental Geology and Water Sciences, 17, 85-101.
https://doi.org/10.1007/BF01701565

[3]   Etu-Efeotor, J.O. and Akpokodje, E.G. (1990) Aquifer Systems of the Niger Delta. Nig. J. Min. Geol., 26, 279-285.

[4]   Reyment, R.A. (1965) Aspects of the Geology of Nigeria. Ibadan Univ. Press, Ibadan 145 p.

[5]   Short, K.C. and Stauble, A.J. (1967) Outline of the Geology of the Niger Delta. Bulletin of AAPG, 51, 761-779.

[6]   Murat, R.C. (1972) Stratigraphy and Paleogeography of the Cretaceous and Lower Tertiary in Southern Nigeria. In: Dessauvagie, T.F.J. and Whiteman, A.J., Eds., African Geology, Univ. Ibadan, Ibadan, 251-266.

[7]   Oomkens, E. (1974) Lithofacies Relations in the Late Quateernary Niger Delta Complex. Sedimentology, 21, 195-222.
https://doi.org/10.1111/j.1365-3091.1974.tb02056.x

[8]   Akpokodje, E.G. (1987) The Engineering Geological Characteristics and Classification of the Major Superficial Soils of the Niger Delta. Engineering Geology, 23, 193-211.
https://doi.org/10.1016/0013-7952(87)90090-1

[9]   Ngah, S.A. (1990) Groundwater Resource Development in the Niger Delta: Problems and Prospects. Proceedings of 8th International IAEG Congress, Balkema, Rotterdam, 1379-1386.

[10]   Wokocha, C.C and Omenihu, E.R. (2015) Land Resources Appraisal and Management Activities using Remote Sensing Techniques: Case Study of Akpor Town, Rivers State. Research Journal of Environment and Earth Science, 5, 145-152.

[11]   Anon, G.E. (1977) Groundwater Manual: A Water Resources Technical Publication. U.S. Dept of the Interior Bureau for Reclamation, Washington DC, 97 p.

[12]   Cooper Jr., H.H. and Jacob, C.E. (1964) A Generalized Graphical Method for Evaluating Formation Constants and Summarizing Well Field History. Transactions on American Geophysical Union, 27, No. 4.

[13]   Theis, C.V. (1935) The Relation between the Lowering of the Piezometic Surface and the Rate and Duration of Discharge of a Well Using Groundwater Storage. Transactions on American Geophysical Union, Washington DC, 518-524.

[14]   Schafer, D.C. (1978) Casing Storage Can Affect Pumping Test Data. Johnson Driller’s Journal, Jan/Feb. Johnson Div. UOP Inc, St. Pauls, MN.

[15]   Kruseman, G.P. and de Ridder, J.M. (1990) Analysis and Evaluation of Pumping Test Data. ILRI Publication 47, 377 p.

[16]   Todd, D.K. (1980) Groundwater Hydrology. John Willey and Sons Inc, New York, 336 p.

[17]   Allen, R.O. (1992) Iron and Chloride Groundwater Contaminants in Rivers State: Geographic and Stratigraphic Distribution and Genesis. Unpublished M.Sc Thesis. University of Port Harcourt, 137 p.

[18]   Etu-Efeotor, J.O. (2000) Hydraulic Characteristics of the Aquifers within the Oligocene-Recent Coastal Plain Sands Parts of Southern Nigeria. Global Jl Pure and Applied Sciences, 6, 107-115.

[19]   Kampsax-Kruger (1985) Final Report on Hydrogeological Site Studies for Water Well Development NAFCON Phase I. Study Report Submitted to Federal Ministry of Commerce and Industry, Abuja, 118 p.

[20]   Krasny, J. (1993) Classification of Transmissivity Magnitude and Variation. Groundwater, 31, 230-236.
https://doi.org/10.1111/j.1745-6584.1993.tb01815.x

 
 
Top