The Effect of Land Use and Land Cover Changes on Flood Occurrence in Teunom Watershed, Aceh Jaya

The change in land use and cover upstream watersheds will the features of drainage systems such that they impact surface overflow affect infiltration capacity a surface, which is one factors contributes to flooding. key objective this study identify vulnerable areas flooding assess causes using ground-based measurement, remote sensing data, GIS-based flood risk mapping approaches for hazard Teunom watershed. purposes investigation were to: (1) examine level characteristics changes occurred area between 2009 2019; (2) determine on water capacity; (3) produce maps sub-district. Landsat imagery 2009, 2013, slope maps; field measurement soil data utilized study. results show significant increase residential land, open rice fields, wetlands (water bodies) different rates contribute variation zone hazards. watershed has high very ~11.98% total area, moderate 56.24%, low ~31.79%. generally risk, with ~68% (moderate risk). There was substantial reduction forest agricultural shrubs from 2019. Therefore, segmentation flood-risk zones essential preparation region. offers basic information about central governments, local NGOs, communities intervene preparedness, responses, mitigation recovery processes, respectively.