2024 Volume 5 Issue 3 Pages 608-613
In the developing country of the Democratic Republic of Timor-Leste, heavy rains during the rainy sea- son cause frequent flooding. Cyclone Seroja in 2021 caused extensive damage to roads, bridges, and other infrastructure. There have been active efforts to strengthen disaster prevention infrastructure. However, as a developing country, Timor-Leste lacks data on disasters, and no assumptions have been made regarding the damage caused by floods. Therefore, in this study, urban development and flood risk assessment using GIS and remote sensing were conducted in Cristo Rei Hera, Dili, the capital city of Timor-Leste. Using Sentinel-2, a satellite operated by the European Space Agency, and Arc GIS Pro, a GIS software, a land use and land cover classification was conducted to compare the area of urban areas overlapping inundated areas. As a result, the urban area of the Hera district increased by about 4 km2 between 2016 and 2024, and the inundation area approximately doubled. It was found that the urban area in the Hera district is spread out in areas of high flood risk.
