Land Suitability Analysis for Solid Waste Landfills in Kano Metropolis Using Multi-Criteria Evaluation Techniques

Solid waste has become one of the greatest challenges for developing countries to understand how to manage large quantities of waste in a sustainable way. The aim of this study is to identify and analyse the most suitable site for solid waste landfills in Kano Metropolis. The objective is to determine the spatial distribution and suitable site for landfills. The integrated data used includes satellite images from Google Earth Pro for the extraction of road networks, and ASTER-GDEM from USGS for elevation and slope generation. Landsat-7 ETM+ image from USGS for land use land cover classification and list of the dumpsite addresses from the Ministry of Environment Kano State and their coordinates from fieldwork. The datasets were integrated into the GIS environment using Multicriteria Evaluation in ArcGIS 10.7. The result reveals that the suitable areas occupied 3708 (ha) of land, that is 1.8% of the study area, moderately suitable with 121203 (ha) of land, that is 28% of the study area, then not suitable with 293031 (ha) of land that is 70.1% of the study area. The study concluded that GIS and remote sensing can factor in and help as a decision support tool. It is recommended for agencies such as the REMASAB to take the response action on the application of the technique in planning for exact areas of landfills.