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3D Hydrography Program FY23 Partnerships

Detailed Description

This map of the United States and its territories shows geographic extent of the first-ever nationally consistent hydrography data acquired from high-resolution 3D Elevation Program (3DEP) data. FY23 projects are the result of ongoing Federal coordination via the 3DHP Working Group and the Alaska Mapping Initiative.




Available or in-progress data that meet 3DHP specification

Cyan Blue = FY23 Partnerships

Medium Blue = Pending Contribution to 3DHP

Dark Blue = Available or In-Progress


3DHP Specifications

  • Hydrography acquired to meet Elevation-Derived Hydrography specifications and READ rules v1.0 or later. TM-11B11 and -11B12.
  • Publicly available


*Sources: Hydrologic Units as defined by the Watershed Boundary Dataset (WBD)​         


Public Domain.