Teledyne Geospatial stated the U.S. Geological Survey (USGS) and Dewberry, a privately held skilled companies agency, printed a brand new topobathymetric lidar dataset for the Potomac River.
The Potomac River flows from the Potomac Highlands in West Virginia to the Chesapeake Bay in Maryland. The lidar survey was performed for USGS’s 3D Elevation Program (3DEP), with stakeholders together with the USGS Earth Sources Commentary and Science Middle (EROS), Nationwide Geospatial Program (NGP), and Jap Ecological Science Middle (EESC) applications, in addition to the Interstate Fee on the Potomac River (ICPRB).
Utilizing their Teledyne Optech CZMIL SuperNova lidar system Dewberry surveyed 55 miles of the Potomac River from Hancock, MD right down to Shepherdstown, WV, buying a complete of 12.5 sq. miles of submerged topobathymetric lidar information. The mission deliverables included a 3D level cloud and seamless topobathymetric Digital Elevation Fashions (DEMs) for that part of the river. This was the 2nd Potomac River mission, with the primary extending from Shepherdstown, WV to the Little Falls dam close to Washington, D.C. It’s anticipated that these maps will present a much-needed device to foretell the presence and motion of oil spills within the Potomac River and help ICPRB’s mission to guard and improve the waters and associated sources of the Potomac River basin by means of science, regional cooperation, and training.
“Given the depths, water circumstances, and backside substrate of the Potomac River, we have been hopeful we’d get backside returns with the improved CZMIL SuperNova system and couldn’t have been happier with the extent of full, seamless protection achieved,” stated Emily Klipp, Dewberry senior affiliate and senior mission supervisor.
The mission required an combination nominal level density (ANPD) of 1.5 factors/m2 in shallow water (~1.5x secchi depth). The survey was in a position to exceed this specification and ship 6.25 factors/m2. The topographic portion of this dataset was examined to fulfill ASPRS Positional Accuracy Requirements for Digital Geospatial Information (2014) for a ten cm RMSEz Vertical Accuracy Class. Precise non-vegetated vertical accuracy was discovered to be 8.8 cm (RMSEz). The bathymetric vertical accuracy was discovered to be 6.1 cm (RMSEz), equating to ± 12.0 cm at 95% confidence stage.
“I’m very happy to see the CZMIL SuperNova tackle one other difficult riverine surroundings mapping its banks and mattress with such excessive element. Congratulations to Dewberry for this nice success in topo-bathymetric information manufacturing!” commented Malek Singer, Airborne Product Supervisor, Teledyne Geospatial.
