Author(s): Daniele Tonina, James A. Mckean, Rohan Benjankar, Wayne Wright, Jaime G. Goode, Qiuwen Chen, William J. Reeder, Jody White

Linked Author(s): Rohan Benjankar

Keywords: EAARL-B, aquatic habitat, topography, hydrodynamic modeling

Abstract: Water resources management focuses on riverine ecosystem and habitat distributions, but they are limited to short river reaches. It is mainly due to lack of computational power and submerged topography at on a watershed scale. Quality of results of those studies depends on accuracy of submerged topography and its spatial resolution. Recent advancement in remote sensing techniques has provided opportunity to extend riverine ecosystem and habitat studies in a watershed sale. The Experimental Advanced Airborne Research Lidar B (EAARL-B) system is a new topobathymetric sensor, which is capable of mapping both terrestrial and aquatic environment at sub-meter resolution. We analyzed accuracy of EAARL-B surveyed topobathymetry by comparing it against high resolution ground surveyed bathymetry based on raster-to-raster approach in the Lemhi River (Idaho, USA). We quantified the performance of the EAARL-B at morphologically different zone, e. g. , floodplain, banks, riffle, pools and runs. EAARL-B surveyed topobathymetry is comparable to the field surveyed bathymetry and most of errors are originated at bank zone. Furthermore, errors associated with river bathymetry have negligible impacts on simulated aquatic habitat. Thus, EAARL-B will open the opportunity to manage water resources in watershed scales with fine-resolution scale

DOI:

Year: 2017