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ADEWARA, M. B. AND ODEYEMI, K. A., Volume 3 Issue 1, 2020 Pages 183-195, Published: 2020-09-25


Landfill is becoming acknowledged as the cheapest form for the final disposal of solid waste and as such it has been the most used method in the world (Babalola, & Busu, 2011). However, siting landfill is an extremely complex task mainly due to the fact that the location and selection process involves many factors and strict regulations. There is a large outcry over the increasing and indiscriminate dumping of refuse in Yewa South Local Government Area of Ogun State, South West Nigeria as a result of the increasing population which has brought about massive volume of waste being generated every day in the area. Unfortunately the management of these wastes is deteriorating day by day due to the limited resources in handling the increasing rate of generated waste. In this study important criteria for siting landfills were identified and a user-friendly landfill site selection model was developed using a Geographic Information Systems (GIS). Suitability map was created after restriction and factor maps were produced using ArcGIS analytical tools and possible sites that are suitable for sitting landfills were finally identified. The shrub lands are presumed to be suitable for siting Landfill. The suitability map could be clearly understood, it can assist in getting full support especially from the public as the selected site is not located on, or near, any environmental interest areas and it is also located at significant distance away from streams, roads and residential areas, which minimizes social conflict and environmental impacts. Results from this study has also shown the effectiveness of GIS’s Analytical Hierarchical Process (AHP) and Multi-Criteria Decision Analysis (MCDA) rule for selecting a suitable landfill site in the area even in the next 100years.