Mapping river bathymetry with a small footprint green LiDAR: Applications and challenges

Journal of the American Water Resources Association
By: , and 

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Abstract

Airborne bathymetric Light Detection And Ranging (LiDAR) systems designed for coastal and marine surveys are increasingly sought after for high-resolution mapping of fluvial systems. To evaluate the potential utility of bathymetric LiDAR for applications of this kind, we compared detailed surveys collected using wading and sonar techniques with measurements from the United States Geological Survey’s hybrid topographic⁄ bathymetric Experimental Advanced Airborne Research LiDAR (EAARL). These comparisons, based upon data collected from the Trinity and Klamath Rivers, California, and the Colorado River, Colorado, demonstrated that environmental conditions and postprocessing algorithms can influence the accuracy and utility of these surveys and must be given consideration. These factors can lead to mapping errors that can have a direct bearing on derivative analyses such as hydraulic modeling and habitat assessment. We discuss the water and substrate characteristics of the sites, compare the conventional and remotely sensed river-bed topographies, and investigate the laser waveforms reflected from submerged targets to provide an evaluation as to the suitability and accuracy of the EAARL system and associated processing algorithms for riverine mapping applications.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Mapping river bathymetry with a small footprint green LiDAR: Applications and challenges
Series title Journal of the American Water Resources Association
DOI 10.1111/jawr.12008
Volume 49
Issue 1
Year Published 2013
Language English
Publisher Journal of the American Water Resources Association
Contributing office(s) National Research Program - Central Branch
Description 12 p.
First page 183
Last page 204