ABSTRACT
The aims of carrying out this experiment were to determine the water quality and to investigate if various human and ecological activities around the river have any effect on the physico-chemical parameters of the rivers. Water samples were collected from three stations on the surface water of Oriyanrin lower Ogun river for a period of 8 months (February to September, 2019). Results showed that temperature ranged 27.2-32.6°C, transparency (0.61-1.04m), pH (5.4-7.9), total dissolved solids (799-2000 mg/L), electrical conductivity (1714-3999 μS/cm), salinity (15.0-34.8%), Nitrate (2.49-3.23 mg/L) dissolved oxygen (5.40-8.3mg/L) and alkalinity (3.0-73.3 mg/l). The study conclude that the physico-chemical parameters agreed with the limits set by both national and international bodies for drinking and fish growth.
Key words: Physical parameter, Chemical parameter, Oriyanrin, Ogun river