Skip to main content
U.S. flag

An official website of the United States government

Elevation-Derived Hydrography Representation, Extraction, Attribution, and Delineation (READ) Rules 2023 rev. A3

Detailed Description

This document is the Elevation-Derived Hydrography Representation, Extraction, Attribution, and Delineation Rules (READ) Rules 2023 rev. A3. It provides information on how to create Elevation-Derived Hydrography features from 3D Elevation Program (3DEP) data. 

Sources/Usage

Public Domain.