NHD — National Hydrography Dataset
Every river, stream, and waterbody, classified.
The federal vector dataset of US hydrography — flowlines, waterbodies, and the topology that connects them. Powers river-system pages and water layers across Hunt, Fish, and Farm.
Coverage
50 states
Refresh cadence
Quarterly USGS publication
Status
Live in production
Agency
Used in Bield
Where this dataset shows up in the apps.
Bield: Fish
River system pages
Each named river renders its NHD flowline geometry with USGS gauges along it.
See it in FishBield: Hunt
Water layer
Streams and waterbodies under the terrain layer.
More in hydrography & marine
USGS Water Services
USGS river gauges (live)
Live flow, stage, and temperature from every USGS station.
USGS
USGS lake bathymetry
Federal lake depth contours and structural data.
NOAA Office of Coast Survey
NOAA marine charts
Federal nautical charts for saltwater environments.