Credits
Data sources and attribution
Floundr is built on public data. Here's where each layer comes from.
| Layer | Source | License | Status |
|---|---|---|---|
| Nautical chart base map | NOAA Office of Coast Survey, ENC Chart Display Service | Public domain | In the app now |
| Seafloor relief, near shore | NOAA NCEI Continuously Updated Digital Elevation Model (CUDEM) | Public domain | Coming soon |
| Seafloor relief, offshore and Bahamas | GEBCO Compilation Group (2025) GEBCO 2025 Grid | Free with attribution | Coming soon |
| Tides and tidal currents | NOAA Center for Operational Oceanographic Products and Services (CO-OPS) | Public domain | Coming soon |
| Wind forecast | NOAA NCEP Global Forecast System (GFS), via NOMADS | Public domain | Coming soon |
| Ocean currents | NOAA Real-Time Ocean Forecast System (RTOFS), via NOMADS | Public domain | Coming soon |
| Map engine | MapLibre Native (open source) | BSD license | In the app now |
NOAA data is a product of the U.S. government and is not subject to copyright in the United States. NOAA, NCEI, CO-OPS and GEBCO do not endorse Floundr.
GEBCO attribution: GEBCO Compilation Group (2025) GEBCO 2025 Grid.
Spotted a data problem or want a source credited differently? Email fishingapparelnetwork@gmail.com.
Floundr is not for navigation. Use official charts and instruments. Depths are survey and model data, not live soundings, and NOAA charts cover US waters only.