The Generalized Normalised Difference Vegetation Index (GNDVI) is a modification of the Normalised Difference Vegetation Index (NDVI), which has been proposed by Weicheng Wu (2014) for the assessment of dryland environments due to the inadequacy of the NDVI in these areas. Indeed, this has been very appropriate and effective in mapping the vegetative cover of the Northwest region of Ghana, which is a semi-arid zone. The GNDVI of 1990 seeks to validate the land cover patterns that existed in the area with regard to biodiversity and land use. This data sets the baseline analysis of the emerging Northwest mining region of Ghana, which would enhance the monitoring of sustainable mining EPSG:3857