PERMEABILITY OF ABEOKUTA RIVERBED SEDIMENTS.

Determination of discharge capacity helps to predict the nature and extent of underground water flow. Riverbed sediments from Abeokuta, southwestern Nigeria, were studied in the laboratory to investigate rates of discharge using different dimensions of packed tubes inclined at varying angles of tilt. Discharge capacity increased with inclination angles, while maximum discharge capacities increased with lengths and diameters of tubes. Comparing volume rates of flow with inclination angles of flaw revealed unique convergence points at which the discharge capacity and angles of inclination remained constant irrespective of the samples. The discharge rate convergence point ranged from 0.3 × 10-1 to 0.5 × 10-9m3/s, while the angle of tilt convergence point ranged from 2.1° to 6.0°. Convergence points for the angle of tilt correlated strongly with the convergence points for the discharge capacity [ABSTRACT FROM AUTHOR]