Journal de télédétection et SIG

Abstrait

Review Paper: Applications of light Detection and Ranging for Flood Modelling and Mapping

Tesfamariam E. Mengesha, Wubetu A. Belay

Flood is one of the most frequent natural disasters in the world, which make a significant impact all around the world on a regular basis, as a result of increased urbanization and extreme climate change. Because of climate change, unplanned rapid urbanization, changes in land use patterns, and inadequate watershed management, flooding events are expected to become more frequent and devastating in the future. The problems of flood are continuously gaining global attention with substantial efforts are being made to create effective flood control and monitoring solutions. The preparation of flood hazard and floodplain models and maps is of the main concern researcher’s and prior area of government’s policy in phase in the disaster management and mitigation. As a result, more studies and methods of flood monitoring and mapping are being developed to mitigate the devastating effects of flood disasters, causing the loss of life, livelihood, and infrastructure. The advancement of remote sensing science and technologies such as Light Detection and Ranging (LiDAR) systems with various processing algorithms, facilitated and improved flood assessment applications. The purpose of this review is to look into the potential and uses of a LiDAR derived DEM on different flood vulnerability assessments and inundation mapping. It also goes through the operational principles of various LiDAR systems, as well as the components of each system, and also the challenges of the system from flood assessment perspective. Furthermore, future prospects using DEM LiDAR data in flood mapping and assessment are highlighted.