The Assessment of Water Quality via Physicochemical Parameters and Macro Invertebrates in Lake Geriyo, Yola, Adamawa State, Nigeria

Abstract

A study on the water quality assessment of Lake Geriyo was carried out fortnightly using standard methods for the period of eighteen months. Physicochemical parameters and Macroinvertebrates have shown that temperature, transparency, hydrogen-on concentration (pH), free carbondioxide, conductivity, total alkalinity, total nitrogen, total phosphorus and total ammonia all were significantly different (p<0.05)in variability in both sites and within the months. A total of four hundred and thirty three (433) species of macroinvertebrates were recorded of which three phyla (Arthropoda, annelida and mullusca) were identified. Macroinvertebrates notably mayflies larvae, dragonflies larvae, blackflies larvae, damselflies larvae, diptera larvaeetc indicate presences of some pollution. Results of the present study showed that the value of physicochemical parameters and macroinvertebrates has confirmed that the pollution level of Lake Geriyo.