| dc.description.abstract | The changes in land use during the expansion of urban areas increase surface runoff and the associated flood risk. Surface runoff, if not properly managed, causes damage to property and infrastructure, leads to silting of water resources, leads to loss of lives and puts public health at risk of diseases. This study focused on the impact of land use change on surface runoff in Kampala during the period from 2012 to 2020 using GIS tools and techniques. The GIS-based assessment requires land use data, precipitation data, soil data, digital elevation model combined with other software tools. Land use maps of 2012, 2016 and 2020 were generated by supervised image classification of Landsat images in QGIS. Surface runoff values were calculated with the Soil Conservation Service curve number (SCSCN) model. Eventual analysis was done to identify the dominant factor of land use change affecting surface runoff. Correlation analysis showed that changes in surface runoff were strongly linked with increase in rainfall on increasing impervious surfaces when compared with the correlation of runoff with other forms of land use. This study recommends extensive research on other factors that affect the changes in surface runoff. The results of this study can be used by different stakeholders and government units that have been tasked with managing the environment in order to come up with management strategies for proper control surface runoff and management of water resources in urban areas. | en_US |
