13 / 31
Notes:
Volume 2
Journal of Environmental Research
Page 25
JOINT EVENT
July 26-27, 2018 Rome, Italy
&
6
th
Edition of International Conference on
Water Pollution & Sewage Management
4
th
International Conference on
Pollution Control & Sustainable Environment
Willabo Miepamo et al., J Environ Res 2018, Volume: 2
Aquifer vulnerability in parts of Yenagoa, Southern Niger Delta, Nigeria
Willabo Miepamo
1
and
Bisong Andy Etta
2
1
Federal Polytechnic Ekowe, Nigeria
2
University of Port Harcourt, Nigeria
T
his study on aquifer vulnerability assessment in certain parts of Yenagoa, Bayelsa State, Southern Niger Delta, Nigeria,
adopted the use of DRASTIC method based on geographic information system (GIS) model to delineate areas susceptible
to contamination. Seven hydrogeologic parameters were applied for the aquifer vulnerability evaluations, which include depth
to water table, net recharge, soil media, impact of vadose zone, aquifer media, topography, and hydraulic conductivity. Data
relating to the seven hydrogeologic parameters of the model were obtained and transformed in the model into seven maps
by GIS to develop the DRASTIC vulnerability map which shows the three different forms of aquifer vulnerability namely
high, moderate, and low zones. The communities within the high vulnerable zones include Swali, Agudama, Ovum, Igbogene,
Okutukutu, Onopa and Okolobiri. Those within the moderate vulnerability zones are Kpansia, Etegwe, Yenezue, Azikoro,
Opolo, Tombia, Biogbolo and Akenfa and in the low vulnerability zones, we have Amarata, Yenezuegene, Edepie, Azikoro,
Akenfa and Okaka. The high vulnerability zones ranking was attributed to very high depth to water table, high net recharge,
high hydraulic conductivity and permeability of gravelly sand in the aquifer media. The moderate vulnerability zones were due
to high net recharge, low porosity of silt/clay in vadose zone, silty loam in soil media and high hydraulic conductivity. The low
vulnerable zones were influenced by impermeability of clayloam in the soil media, low porosity of silty clay in the vadose zone
and low topographic slope percent.
Biography
Willabo Miepamo has passion for conservation and preservation of the environment from further deteriorating. He organizes seminars, lectures and workshops to
create public awareness on the dangers of groundwater contamination in host communities to multinational oil companies. He has completed his Master’s degree
in Hydrogeology from the University of Port Harcourt, Nigeria. He teaches in the Federal Polytechnic Ekowe and provides solution to groundwater contamination
challenges faced by Southern Niger Delta States of Nigeria.
Sutaria4life@yahoo.com