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Levee crest elevation profiles derived from airborne lidar-based high resolution digital elevation models in south Louisiana

ISPRS Journal of Photogrammetry and Remote Sensing

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https://doi.org/10.1016/j.isprsjprs.2014.02.010

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Abstract

This study explores the feasibility of using airborne lidar surveys to construct high-resolution digital elevation models (DEMs) and develop an automated procedure to extract levee longitudinal elevation profiles for both federal levees in Atchafalaya Basin and local levees in Lafourche Parish, south Lousiana. This approach can successfully accommodate a high degree of levee sinuosity and abrupt changes in levee orientation (direction) in planar coordinates, variations in levee geometries, and differing DEM resolutions. The federal levees investigated in Atchafalaya Basin have crest elevations between 5.3 and 12 m while the local counterparts in Lafourche Parish are between 0.76 and 2.3 m. The vertical uncertainty in the elevation data is considered when assessing federal crest elevation against the U.S. Army Corps of Engineers minimum height requirements to withstand the 100-year flood. Only approximately 5% of the crest points of the two federal levees investigated in the Atchafalaya Basin region met this requirement.

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Additional publication details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Levee crest elevation profiles derived from airborne lidar-based high resolution digital elevation models in south Louisiana
Series title:
ISPRS Journal of Photogrammetry and Remote Sensing
DOI:
10.1016/j.isprsjprs.2014.02.010
Volume:
91
Year Published:
2014
Language:
English
Publisher:
Elsevier
Contributing office(s):
Eastern Geographic Science Center
Description:
13 p.
First page:
114
Last page:
126
Country:
United States
State:
Louisiana