Case Example of GIS Utilization on Abay Gorge’s Landslide Survey in Ethiopia

Abstract

This report introduces Geographic Information System utilization in the landslide survey thought the case example “The Project for Developing Countermeasures against Landslides in the Abay River Gorge in the Federal Democratic Republic of Ethiopia” which is one of the official development assistance project implemented by Japan International Cooperation Agency. The collected data specifically was topographical map, satellite image, geological map, digital elevation model data, movement bodies, scarps, cracks, springs, meteorological stations, drilling/monitoring position, cross section lines and so on. Based on these data, the analysis was conducted such as the following; analysis of the relationship with landslide distribution and elevation/geology, slope analysis and land covers classification for risk evaluation of debris flow/rock fall. The following maps are also made using the above collected data and analysis results; field survey map for investigation of the drilling, landslide, rockfall and debris flow distribution map, risk rank/hazard map and etc.