Find Your Next Spot
Data Sources
Every ramp on Boatzia traces back to a named public agency source.
USGS National Boat Ramp Inventory
National baseline — all 50 states + DC
Aggregated public boat ramp records from the U.S. Geological Survey via ScienceBase, compiled from contributions across state agencies nationwide.
Florida Fish and Wildlife Conservation Commission (FWC)
Florida
State-maintained boat ramp inventory with fees, lane counts, amenities, and access-type detail.
Michigan Department of Natural Resources (DNR)
Michigan
State-maintained public boating access site inventory.
Wisconsin Department of Natural Resources (DNR)
Wisconsin
State-maintained public boat access site inventory.
Minnesota Department of Natural Resources (DNR)
Minnesota
State-maintained public water access site inventory.
How this data is combined
See our methodology page for how we normalize records from these different sources into a single searchable format, and how we handle gaps, duplicates, and data quality across state lines.