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National Geospatial Program: Building The National Map
Federal · US GEOLOGICAL SURVEY · #15.817
The National Map is a collaborative effort among the USGS and other Federal, State, Universities, and local partners to improve and deliver topographic information for the Nation. The 3D National Topography Model, including the 3D Elevation Program (3DEP) and the 3D Hydrography Program (3DHP), is an initiative that updates, improves, and integrates USGS elevation and hydrography data to support the most demanding scientific requirements and enable data-driven decisions across user communities.
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About this program
The National Map is a collaborative effort among the USGS and other Federal, State, Universities, and local partners to improve and deliver topographic information for the Nation. The 3D National Topography Model, including the 3D Elevation Program (3DEP) and the 3D Hydrography Program (3DHP), is an initiative that updates, improves, and integrates USGS elevation and hydrography data to support the most demanding scientific requirements and enable data-driven decisions across user communities.
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Source: SAM.gov Assistance Listings ↗ · 2026
Informational only — official eligibility is determined by the administering agency.
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