TITLE:
A Micro Study to Determine Porosity, Hydraulic Conductivity, Permeability and the Discharge Rate of Groundwater in Ondo State Riverbeds, Southwestern Nigeria
AUTHORS:
Akintayo D. Omojola, Sunday J. Akinpelu, Abisola M. Adesegun, Olukayode D. Akinyemi
KEYWORDS:
Pressure Digital Manometer, Pressure Gradient, Global Positioning System, Riverbed
JOURNAL NAME:
International Journal of Geosciences,
Vol.5 No.11,
October
13,
2014
ABSTRACT: Laboratory study of three riverbed soil
samples denoted as A, B and C have been carried out by determining the soils Porosity, Hydraulic
conductivity, Permeability and also investigating if there are points of
convergence between the discharge rate and angle of tilt for the above
mentioned samples. The experimental results for Porosity were approximately
within 34% - 37%, Hydraulic conductivity was within 3.02 × 10-5 - 9.70
× 10-5 (m/s) and Permeability was within 2.74 × 10-12 - 8.80
× 10-12 (m2). Pressure generally increases as distance of
flow increases for θ = 5° - 25° but
there was decrease in pressure as distance of flow increases for all three
samples when θ = 0°. The points of
convergence for the discharge rate ranged from 0.001 × 10-10 - 4.54 ×
10-10 (m3/s), while the angle of tilt convergence points
ranged from 0.1° to 3.6°. There was increase in discharge rate as angle of tilt
increases for all three samples.