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Pilot Topobathymetric Terrain Model of the Kootenai River near Bonners Ferry, Idaho, 2009 - 2019


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Danielson, J.J., Miller-Corbett, C.D., and Thatcher, C.A., 2021, Pilot Topobathymetric Terrain Model of the Kootenai River near Bonners Ferry, Idaho, 2009 - 2019: U.S. Geological Survey data release,


The U.S. Geological Survey (USGS) 3D Elevation Program (3DEP) has started to initiate the development of pilot 3D National Topography Models to generate 3-dimensional surface elevation models that integrate river topographic bare-earth elevation surfaces with channel bed bathymetry. Detailed knowledge of integrated river system topography, bathymetry, and topobathymetry, is essential for habitat restoration, hydrologic modeling, and other key science applications such as flood mapping and identification of fluvial geomorphic features. An integrated 1-meter topobathymetric digital elevation model (TBDEM) for the Kootenai River near Bonners Ferry, Idaho, has been developed for this first pilot study. The Kootenai River is one of the [...]


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Kootenai_River_TBDEM_Data Management Plan.docx 16.06 KB application/vnd.openxmlformats-officedocument.wordprocessingml.document 297.3 KB application/zip 339.82 MB application/zip
Kootenai_River_TBDEM_Spatial_Metadata_Dictionary_040721.docx 126.42 KB application/vnd.openxmlformats-officedocument.wordprocessingml.document


Detailed knowledge of integrated river system topography and bathymetry are essential for key science applications such as inundation mapping, habitat characterization, and fluvial geomorphology analyses. As part of the vision for a 3D Nation, the U.S. Geological Survey (USGS) 3D Elevation Program (3DEP) is starting to investigate the potential for topobathymetric lidar for mapping submerged topography in riverine landscapes. Different rivers for the pilot study are selected based on varying environmental conditions (water clarity, bottom type composition, albedo, and depth) to understand lidar performance in mapping water feature bottom elevations referred to as submerged topography, or bathymetry. This research will help 3DEP work toward operationalizing topobathymetric, or topobathy lidar by providing recommendations regarding topobathy lidar sensor performance and suitable site conditions for potential future river acquisition surveys. Inland bathymetry data from lidar and sonar sources are being assimilated with topographic lidar data to create pilot 3D National Topography Models that integrate river bathymetry with the land surface topography. The disparate green lidar (532nm wavelength) and bathymetric sonar data types are integrated into a common 3D database to generate raster elevation data aligned both vertically and horizontally to a common reference system. The raster elevation topobathymetric product, the Federal Geographic Data Committee metadata, and the spatially referenced metadata files are contained in the downloadable bundle. Spatially referenced metadata are contained within an ESRI geodatabase that stores footprints for each of the input source areas along with source data characteristics. Pilot study terrain models provide required seamless integrated elevation products that can be critical to various science application studies such as flood risk management, 2D/3D hydrologic modeling, river geomorphology applications, sediment-transport, and aquatic habitat restoration, and for analyses of the potential impacts of various climate change scenarios on dynamically changing river landscapes.

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DOI doi:10.5066/P9Q3VAY8

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