The USGS provides specifications, READ Rules, and additional resources for the acquisition of elevation-derived hydrography (EDH) from distributed 3DEP products for inclusion in the National Hydrography Dataset.
Elevation-Derived Hydrography Acquisition Specifications
Elevation-Derived Hydrography Acquisition Specifications
Elevation-Derived Hydrography—READ Rules
Elevation-Derived Hydrography—READ Rules