New Water Policy and Practice Volume 1, Number 2 - Spring 2015 | Page 36

Environmental Pollution Potential within the Burl River Basin of Liberia, West Africa   Figure 1: Burl River Basin, West Africa Table 1. Data Inputs and their weighted properties Data inputs and their weighted properties Parameter Source Landuse Derived from land cover map downloaded at diva-gis.org Slope Derived from the SRTM 90M digital elevation model Population Projected population for the Burl River Basin obtained from the 2008 Population and Housing Census conducted by the Government of Liberia Soil Derived from the soil map downloaded at diva-gis.org   35