Skip to main content
U.S. flag

An official website of the United States government

Elevation-Derived Hydrography READ Rules:

By NGP Standards and Specifications 2020 (approx.)
Imagery and map showing an example of a culvert.
Original Thumbnail Medium

Detailed Description

Highway 211 in Virginia crossing unnamed streams as examples of a culvert hydrographic feature. Source data are from the National Hydrography Dataset (U.S. Geological Survey, 2020), which is used to provide examples of hydrographic feature types but may not have the same density and other characteristics of elevation-derived hydrography

Sources/Usage

Public Domain.