Hydrography & marineNOAA Office of Coast Survey
NOAA marine charts
Federal nautical charts for saltwater environments.
NOAA ENC (Electronic Navigational Chart) tiles for US coastal waters — depth soundings, hazards, channels, aids to navigation. The Bield: Fish saltwater basemap.
Coverage
All US coastal waters + Great Lakes + Caribbean territories
Refresh cadence
Weekly NOAA chart updates
Status
Live in production
Agency
Used in Bield
Where this dataset shows up in the apps.
Bield: Fish
Saltwater basemap
Default map style on Fish when the trip is in saltwater.
More in hydrography & marine
USGS / NHDPlus
NHD — National Hydrography Dataset
Every river, stream, and waterbody, classified.
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.