Original Research Article
Year: 2017 | Month: Jan.-March | Volume: 1 | Issue: 1 | Pages: 29-43
Assessment of Physico-Chemical Properities of Surface Water, of Oji Town And its Adjoining Areas, Anambra Basin, Se. Nigeria for Irrigation Purpose
M. O. Eyankware1, B. O. Okoeguale2, R. O. E Ulakpa3
1Department of Geology, Faculty of Sciences, Ebonyi State University, Abakaliki, Ebonyi State, Nigeria.
2Department of Applied Biology, Faculty of Biological Sciences, Ebonyi State University,
Abakaliki, Ebonyi State, Nigeria.
3Department of Geography and Meteorology, Faculty of Environmental Science, Enugu State University of Science and Technology, Enugu State, Nigeria.
Corresponding Author: M. O. Eyankware
ABSTRACT
The study tends to assess the quality of surface water for irrigation purpose. The following parameters were test for: PH, Turbidity, Electrical Conductivity, and temperature, Total Dissolved Solid (TDS), Mg2+, SO42-, Cl-, K+, Na2+, HCO3-, Ca2+ and NO3-. PH ranges from (6.0 to 6.9), Turbidity ranges from (0.5 to 2.9 NTU), EC ranges from (34.7 to 60.8µS/cm), temperature ranges from (23 to 290C), TDS ranges from (22.4 to 31.6 mg L-1), magnesium ranges from (1.2 to 3.5 mg L-1/0.09 - 0.21meq/L), sulphate ranges from (2.1 to 12.2 mg L-1/ 0.04 to 0.25 meq/L), chloride ranges from (1.4 to 17.6 mg L-1/ 0.03 to 0.49 meq/L) potassium ranges from (0.9 to 2.6 mg L-1/0.02 to 0.06 meq/L), sodium ranges from (0.3 to 4.3 mg L-1/ 0.01 to 0.18 meq/L), bicarbonate ranges from (30.8 to 66.7 mg L-1/ 0.5 to 1.09 meq/L), calcium ranges from (4.2 to 12.6 mg L-1/ 0.34 to 0.62 meq/L) and nitrate ranges from (0.0 to 26.0 mg L-1 / 0 to 0.41 meq/L). Calculated indices such a SAR, MAR, PI, TH, RSBC, Kelly ratio SSP and CAI indicate that majority of the water are suitable for irrigation. All the sampled values of Na% are excellent for irrigation purpose except for OJI/02 and OJI/06. The water qualities satisfy the condition for use in irrigation. From the Piper an Schoeller diagrams it reveals that OJI/01 is of Ca-HCO3-NO3 water type, OJI/02 - 07 are of Ca- HCO3-Cl water type, OJI/08 is of Mg- HCO3-Cl-SO4 water type, while OJI/09 and OJI/10 are of Ca-Mg- HCO3-Cl with HCO3 as the dominat ionic specie found in all the water samples.
Key words:Ajali Formation, Nsukka Formation, Irrigation, Water Quality and Oji.
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