USGS lake bathymetry
Federal lake depth contours and structural data.
Lake-depth contour datasets where USGS or partner agencies have published surveys. Combined with NHD waterbody polygons for the Fish bathymetry layer.
Coverage
Surveyed federal and partner lakes — coverage varies by region
Refresh cadence
Static; updated when new surveys publish
Status
Live in production
Agency
Used in Bield
Where this dataset shows up in the apps.
Bield: Fish
Lake structure layer
Depth contours under the lake surface tile for structure-fishing decisions.
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.
NOAA Office of Coast Survey
NOAA marine charts
Federal nautical charts for saltwater environments.