An assessment of the physico-chemical parameters of Kontagora reservoir, Niger state, Nigeria

Abstract

The seasonal variations in the physicochemical parameters of water reservoir in Kontagora, Nigeria were studied from January to December, 2007. The physico-chemical parameters were determined bimonthly. They include: temperature (using mercury in glass thermometer), transparency (using Secchi-disc ), while Pye Unicam model 292 meter was used for pH and electrical conductivity determination . Dissolved oxygen by modified Winkler-azide method, water hardness by Lind method and Phosphate – phosphorus by Denges method, total alkalinity by titration method, total dissolved solid by O’wen method, while Nitrate-Nitrogen was determined using Phenoldisulphonic acid method. Water depth was determined using a calibrated measuring tape weighted at one end. The rainy season mean values for water temperature, depth, pH, Nitrate-Nitrogen, were significantly (P Keywords: Kontagora reservoir, physicochemical parameters, Seasonal, Environment.