Evaluation of Shallow Wells around Ukwuoku Hills, Oju Area of Benue State, Lower Benue Trough, Nigeria for Irrigation-Juniper Publishers

JUNIPER PUBLISHERS-OPEN ACCESS JOURNAL OF ENVIRONMENTAL SCIENCES & NATURAL RESOURCES

Evaluation of Shallow Wells around Ukwuoku Hills, Oju Area of Benue State, Lower Benue Trough, Nigeria for Irrigation

Authored by MO Eyankware

Abstract

Groundwater quality from shallow wells were evaluated for irrigation purpose, around Ukwuoku Hills, Oju local government area of Benue State, Nigeria. The following parameters were analyzed using America Public Health Association standard method: pH, turbidity, electrical conductivity, total dissolved solids, magnesium (Mg2+), potassium (K+) calcium (Ca2+), chloride (Cl-), bicarbonate (HCO3-), sulphate (SO42-). The study area lies within Asu River Group of the Lower Benue Trough. Important constituents that influence the water quality for irrigation are electrical conductivity which ranges from 127 to 760 μS/cm, soluble sodium percentage (SSP) which ranges from 1.53 to 43.78, sodium percentage (Na%) which ranges from 1.55 to 77.8% (KR) ranges from 0.01 to 0.77, (MAR) ranges from 0.00 to 61.98, total hardness (TH) which ranges from 72.00 to 425.5 within the study area. The above estimated parameters value satisfies the various permissible standard value for irrigation except for MAR at OJU/LBT/04, Na% at OJU/LBT/09, 13 and 14, SAR at 01 and 04 and TH at OJU/LBT/04 that are slightly above various permissible standard values. From Gibbs plot it was observed that rock dominance is the major factor that influences groundwater except for few sampling points were precipitation dominance was observed to influence on groundwater within the study area.

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