With an increase in urbanization, there is need for a constant assessment and monitoring of environmental features. Environmental Impact Assessment (EIA) has been used in this research was to assess the impacts of Ala River in Akure on the environment using Geographical Information System (GIS) techniques. The data collection involved the use of Questionnaires and the design were based on four criteria: socio-cultural, climatic, economic, Health and Safety Impact factors. Using ArcMap, Buffer Analysis was performed around the River to get those features most susceptible to the impact of Ala River and also to guide the expanse where opinion survey was carried out at different locations around the river. Analysis of Variance (ANOVA) was used to analyse the data acquired and the Hypothesis tested were used to generate outcome set for each of the criteria’s. From the results of the study, it was discovered that the River has impacts on the Social-Cultural state of the environments (P<0.05), Climate of the environment (P<0.05) and Health and Safety state of the environment including the people around it(P<0.05) but the River does not have major impacts on the Economic factors (P>0.05).The research recommends that additional effort need to be put in place on all fronts if the results acquired from environmental assessment is to be put to good use.
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