National Hydrography Dataset (NHD)

Prepared in cooperation with U.S. Environmental Protection Agency and other State and local partners (see dataset specific metadata under Data_Set_Credit for details)



The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000 scale and exists at that scale for the whole country. High resolution NHD adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Like the 1:100,000-scale NHD, high resolution NHD contains reach codes for networked features and isolated lakes, flow direction, names, stream level, and centerline representations for areal water bodies. Reaches are also defined to represent waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria set out by the Federal Geographic Data Committee.

Study Area

Publication type Report
Publication Subtype USGS Unnumbered Series
Title National Hydrography Dataset (NHD)
DOI 10.3133/70046927
Year Published 2001
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Description Dataset
Country United States
Online Only (Y/N) Y
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details