3D Hydrography Program FY26 Partnerships

By 3D Hydrography Program February 12, 2026

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. FY26 projects are the result of ongoing Federal coordination via the 3DHP Working Group and the Alaska Mapping Initiative.

Sources/Usage

Public Domain.

FY26 Partnerships (subject to change)

Periwinkle Blue = FY26 Partnerships In-Progress or Planned

Medium Blue = Pending Contribution to 3DHP

3DHP Data¹

Dark Blue = Available or In-Progress

Hydrography derived from 1m Digital Elevation Model (DEM) created from 3DEP QL2 or better lidar (5m DEM from IfSAR in AK)²

¹ 3DHP may be acquired from lower resolution DEM where 3DEP data is restricted

3DHP Specifications

²Hydrography acquired to meet Elevation-Derived Hydrography specifications and READ rules v1.0 or later. TM-11B11 and -11B12.

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