Investigation of Flash Flood Threats Using Spatial Data in Lawe Sigala-Gala District, Southeast Aceh District, Aceh

Flash floods are floods with very large water discharge that comes suddenly. in 2017, lawe sigala-gala district, including areas affected by flash flood in central aceh district, needs to be done by researching maps of potentially flood-prone areas. the study was conducted using desktop arcgis software with a scoring method and weighting of parameters. the threat parameters are 6 parameters and the score given to each parameter has an interval of 5 with a low, rather low, medium, rather high, and high class. based on the calculation results, the study location consisted of 3 flash flood threat classes namely low class covering lawe deski sub-watershed, medium class covering lawe tua makmur sub-watershed, suka jaya sub-watershed, lawe rakat sub-watershed and tanoh alas sub-watershed, and high class covering bukit sub-watershed independent. the threat of flash flood in this sub-district is influenced by land use. this is due to the uneven distribution of the population that is a settlement in this sub-district.