Dataset description: Bathymetric digital elevation model (DEM) of Lake Tahoe near Dollar Point

Underwater images collected near Dollar Point in Lake Tahoe, California, were processed using Structure-from-Motion (SfM) photogrammetry techniques into a classified 3D point cloud. The DEM was derived in Metashape (ver. 1.6.4) from the point cloud, but it excludes the 'high noise' class. The DEM data were output as a geoTIFF raster at 25-mm resolution.

Version	1
Keywords	visible light imaging, lakebed characteristics, structure from motion, geospatial datasets, remote sensing
Format	GeoTIFF
Amount	311.4 MB

Contacts

Contact	Jonathan Warrick PCMSC_data@usgs.gov

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Location of materials and files

Public files	https://doi.org/10.5066/P9934I6U
Metadata	https://cmgds.marine.usgs.gov/metadata/pcmsc/DataReleases/CMGDS_DR_tool/DR_P9934I6U/SQUID5_Tahoe_2021_DEM_25mm_metadata.xml Outline - Questions and answers - Text - XML

Activities and equipment

Activity	Equipment
2021-607-FA	SQUID-5 Structure-from-Motion (SfM) Quantitative Underwater Imaging Device with 5 cameras designed by Gerry Hatcher for SfM data collection.