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Sensors 2018, 18(11), 3843; https://doi.org/10.3390/s18113843

Challenges and Opportunities for UAV-Based Digital Elevation Model Generation for Flood-Risk Management: A Case of Princeville, North Carolina

1
Geomatics Program, Department of Built Environment, North Carolina A&T State University, Greensboro, NC 27411, USA
2
North Carolina Emergency Management, Geodetic Survey; NC 27699-4298, USA
*
Author to whom correspondence should be addressed.
Received: 21 August 2018 / Revised: 30 September 2018 / Accepted: 7 November 2018 / Published: 9 November 2018
(This article belongs to the Section Remote Sensors)
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Abstract

Among the different types of natural disasters, floods are the most devastating, widespread, and frequent. Floods account for approximately 30% of the total loss caused by natural disasters. Accurate flood-risk mapping is critical in reducing such damages by correctly predicting the extent of a flood when coupled with rain and stage gage data, supporting emergency-response planning, developing land use plans and regulations with regard to the construction of structures and infrastructures, and providing damage assessment in both spatial and temporal measurements. The reliability and accuracy of such flood assessment maps is dependent on the quality of the digital elevation model (DEM) in flood conditions. This study investigates the quality of an Unmanned Aerial Vehicle (UAV)-based DEM for spatial flood assessment mapping and evaluating the extent of a flood event in Princeville, North Carolina during Hurricane Matthew. The challenges and problems of on-demand DEM production during a flooding event were discussed. An accuracy analysis was performed by comparing the water surface extracted from the UAV-derived DEM with the water surface/stage obtained using the nearby US Geologic Survey (USGS) stream gauge station and LiDAR data. View Full-Text
Keywords: UAV; 3D flood mapping; remote sensing; digital elevation model; 3D modeling UAV; 3D flood mapping; remote sensing; digital elevation model; 3D modeling
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Hashemi-Beni, L.; Jones, J.; Thompson, G.; Johnson, C.; Gebrehiwot, A. Challenges and Opportunities for UAV-Based Digital Elevation Model Generation for Flood-Risk Management: A Case of Princeville, North Carolina. Sensors 2018, 18, 3843.

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