Comparative analysis of techniques for estimating aquifer hydraulic parameters: Case study of Ezza and Ikwo areas South Eastern Nigeria
| dc.contributor.author | Oli, Ifeanyi Chidozie | |
| dc.date.accessioned | 2025-06-24T13:33:24Z | |
| dc.date.available | 2025-06-24T13:33:24Z | |
| dc.date.issued | 2021-12 | |
| dc.description | This thesis is for the award of Master of Science (MSc) in Hydrogeology | |
| dc.description.abstract | Aquifer hydraulic parameters (Hydraulic conductivity and transmissivity) plays an important rolein the assessment and management of groundwater. Conventionally, these parameters are best estimated by means of a pumping test, which is expensive and time consuming. The integration of data from the electrical resistivity survey and the pumping test provides a cost-effective and efficient alternative. A total of Thirty-five (35) Vertical Electrical Sounding with a maximum current electrode spacing of 150m using Schlumberger array, with parametric sounding performed in the vicinity of the five (5) wells where the pumping test was conducted for comparative purposes. The empirical relationship between the hydraulic conductivity derived from the pumping test and the aquifer resistance were established for the different Formations(Ebonyi and Abakaliki Formation) and, in turn, used to estimate aquifer hydraulic parameters in areas away from wells. Aquifer hydraulic conductivity varies from 0.49m/day to 1.5735m/daywith a mean value of 0.9205m/day for the Ebonyi Formation, while those underlain by the Abakaliki Formation have hydraulic conductivity values that varies from0.0775m/dayto1.3023m/day, with a mean value of 0.2883m/day. The Transmissivity values ranges between0.29m2 /day to 57.27m2 /day with a mean value of 6.59m2 /day. Transmissivity values obtained were compared with Krásný’s Transmissivity classifications and the result used to delineatethearea into three aquifer potential zones; very low, low and intermediate zones. The studyshowsthat the areas underlain by the Ebonyi Formation have a higher groundwater potential than thoseunderlain by the Abakaliki Formation. This is also supported by the geology of the area, with the Abakaliki Formation dominated by shales that have very low permeability, while the Ebonyi Formation consists of shales with alternations of sandstones, which supports good aquifer conditions. Statistical analysis of the different model equations used in estimating hydraulic conductivity of the study area shows that the New Model proved to be a better substitute intheabsence of pumping test data. | |
| dc.identifier.citation | Oli, I. C. (2021). Comparative analysis of techniques for estimating aquifer hydraulic parameters: Case study of Ezza and Ikwo areas South Eastern Nigeria (Unpublished Master's Thesis). Federal University of Technology, Owerri, Nigeria | |
| dc.identifier.uri | https://repository.futo.edu.ng/handle/20.500.14562/2056 | |
| dc.language.iso | en | |
| dc.publisher | Federal University of Technology, Owerri | |
| dc.rights | Attribution-NonCommercial-ShareAlike 4.0 International | en |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.subject | Aquifer potential | |
| dc.subject | hydraulic conductivity | |
| dc.subject | pumping test | |
| dc.subject | transmissivity | |
| dc.subject | vertical electrical sounding | |
| dc.subject | Department of Geology | |
| dc.title | Comparative analysis of techniques for estimating aquifer hydraulic parameters: Case study of Ezza and Ikwo areas South Eastern Nigeria | |
| dc.type | Master’s Thesis |