3DHP

The 3DHP products are hydrographic products derived from LIDAR point clouds and digital elevation models (DEMs) at various resolutions.

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Note that the 3D elevation products and 3D hydrography products are distinct outputs, although both stem from point cloud measurements.

https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/media/files/Elevation-Derived-Hydrography-Data-Acquisition-Specifications-2024-rev-A3.pdf https://www.epa.gov/system/files/documents/2025-06/csc_memo_training_4-29-25_508.pdf http://nasa.gov/directorates/somd/space-communications-navigation-program/technology-readiness-levels/