The Use of LiDAR-Derived DEM in Flood Applications: A Review

Flood occurrence is increasing due to escalated urbanization and extreme climate change; hence, various studies on this issue and methods of flood monitoring and mapping are also increasing to reduce the severe impacts of flood disasters. The advancement of current technologies such as light detecti...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2020-07, Vol.12 (14), p.2308
Main Authors: Muhadi, Nur Atirah, Abdullah, Ahmad Fikri, Bejo, Siti Khairunniza, Mahadi, Muhammad Razif, Mijic, Ana
Format: Article
Language:English
Subjects:
Accuracy
airborne LiDAR
Climate change
Computer simulation
DEM
Digital Elevation Models
Disasters
Environmental risk
Flood damage
flood inundation
Flood management
flood map
Flood mapping
flood model
Floods
Hydrologic data
Hydrology
LiDAR
Mapping
Photogrammetry
Production methods
Remote sensing
Risk management
Simulation
Studies
Topography
Urban areas
Urbanization
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Summary:Flood occurrence is increasing due to escalated urbanization and extreme climate change; hence, various studies on this issue and methods of flood monitoring and mapping are also increasing to reduce the severe impacts of flood disasters. The advancement of current technologies such as light detection and ranging (LiDAR) systems facilitated and improved flood applications. In a LiDAR system, a laser emits light that travels to the ground and reflects off objects like buildings and trees. The reflected light energy returns to the sensor, whereby the time interval is recorded. Since the conventional methods cannot produce high-resolution digital elevation model (DEM) data, which results in low accuracy of flood simulation results, LiDAR data are extensively used as an alternative. This review aims to study the potential and the applications of LiDAR-derived DEM in flood studies. It also provides insight into the operating principles of different LiDAR systems, system components, and advantages and disadvantages of each system. This paper discusses several topics relevant to flood studies from a LiDAR-derived DEM perspective. Furthermore, the challenges and future perspectives regarding DEM LiDAR data for flood mapping and assessment are also reviewed. This study demonstrates that LiDAR-derived data are useful in flood risk management, especially in the future assessment of flood-related problems.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs12142308