Skip to main content
U.S. flag

An official website of the United States government

FY23 Status of 3DHP Quality Data in Alaska

By 3D Hydrography Program
FY23 Status of 3DHP Quality Data in Alaska
Original Thumbnail Medium

Detailed Description

This map of Alaska 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.

 

Explanation

 

Available or in-progress data that meet 3DHP specification

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)​         

Sources/Usage

Public Domain.