Mapping Of Potential Land Disasters Using GIS (Geographic Information System) In Tanggamus District

Abstract

Tanggamus Regency is one area that has the potential for landslides because it’s passed over by mountains and hills. This study aims to determine the level of potential landslides and to determine the distribution of areas with potential landslides in Tanggamus Regency. This study aims to determine the level of potential landslides and to determine the distribution of areas with potential landslides in Tanggamus Regency. This study uses descriptive research methods conducted in Tanggamus Regency. The population of this research is all land units in Tanggamus Regency. Determination of the sample in this study using stratified random sampling technique. Data collection tehniques such as observation and documentation. Spatial analysis was performend with geographic information system (GIS) using Arcmap 10.3 software with scoring and overlay methods. The results of the research that have been obtained sahow that the level of potential landslides in Tanggamus Regency consists of four classes, namely non potential (492,31 ha or 0,17%), low potential (161.269,73 ha or 54,48%), moderate potential (124,555,24 ha or 42,84%), and high potential (4.403,53 ha or 1,51%). The distribution of landslide potential areas in the non potential class are spread in Air Naningan Suddistric, Kota Agung Suddistric, Pematang Sawa Suddistric, Semaka Suddistric, Ulu Belu Suddistric, and Wonosobo Suddistric. Potential landslides in the low class are scattered hroughout Tanggamus Regency. The dominant area is scattered in the areas of Ulu Belu Subdistrict. Potential landslides in the moderate class are scattered hroughout Tanggamus Regency. The dominant area is scattered in the areas of Ulu Belu Subdistrict. The high potential class landslides are spread in Kota Agung Suddistrict, Kota Agung Timur Suddistric, Kota Agung Barat Suddistric, Pematang Sawa Suddistric, and Ulu Belu Suddistric.