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Tuesday May 26, 2026 2:15pm - 2:45pm EDT
The USGS has launched the 3D Hydrography Program (3DHP), an initiative to remap the Nation’s hydrography using a nationally consistent, 3D stream network derived from high-quality lidar data. 3DHP aims to greatly enhance the locational accuracy of mapped streams, provide z-elevation data to the stream network, and increase the mapping density of headwater streams.

Using elevation as the foundation for 3DHP hydrography ensures that these fundamental datasets are aligned, enhancing their compatibility and usability for scientific analysis, modeling, and other applications. Additionally, 3DHP provides a network-addressable hydrographic framework that enables users to reference, index, and link external datasets—such as water quality measurements, infrastructure, and features like wetlands—to stream networks.

This presentation highlights the key advancements of 3DHP, explores its current development in New England, and showcases examples of how 3DHP addresses local needs.
Speakers
avatar for Adam Benthem

Adam Benthem

National Map Liaison, USGS
Adam studies the anthropogenic modification of rivers and land surfaces. He specializes in using remote sensing to monitor and predict landform change through time with a focus on integrating field-based site measurements with regional-scale geospatial datasets. He received his Master’s... Read More →
Tuesday May 26, 2026 2:15pm - 2:45pm EDT
Room 174

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