潮汐在身邊

Data Sources

Last updated: September 2026

Tides Near Me is built on data published by national agencies, hydrographic offices, meteorological services, and open-data communities. This page lists them and the licences their data is used under. The exact credits for what is on screen appear inside the Service: in the map's attribution control for each map layer, alongside each marine forecast, and in our API responses. None of these providers is affiliated with or endorses Tides Near Me, and none has reviewed how its data is presented here.

Not for navigation. Depths and chart features are derived from survey compilations and may be inaccurate or out of date. See our Terms of Service.

Base Map

  • Map tiles by OpenFreeMap, map style © OpenMapTiles, map data © OpenStreetMap contributors, available under the Open Database License (ODbL). OpenStreetMap data also supplies navigation marks, points of interest, and land areas in the marine layers.

Depths and Nautical Chart Features

Depth colors, contours, soundings, and chart features are compiled from the following sources. Vertical datums differ by source and are shown in the map legend where known.

Global

  • Bathymetry: GEBCO Compilation Group (2026) GEBCO 2026 Grid
  • Bathymetry: EMODnet Bathymetry Consortium (2024) EMODnet Digital Bathymetry (DTM 2024), CC BY 4.0

United States

  • Chart features: NOAA Electronic Navigational Charts (public domain)
  • Bathymetry: NOAA Office of Coast Survey BlueTopo
  • Bathymetry: NOAA NCEI Great Lakes Bathymetry
  • Marine protected areas: NOAA MPA Inventory
  • Inland Electronic Navigational Charts: US Army Corps of Engineers

Canada

  • Bathymetry: Canadian Hydrographic Service NONNA data

United Kingdom and Ireland

  • Contains United Kingdom Hydrographic Office data © Crown copyright and database right, used under the Open Government Licence v3.0
  • Bathymetry: Contains Irish Public Sector Data (Geological Survey Ireland & Marine Institute) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence

France

  • Bathymetry: Shom (HOMONIM MNTs), Licence Ouverte v2.0. Bathymétrie: Litto3D® Shom/IGN
  • Wrecks, obstructions, cables and pipelines: © Shom - Epaves et obstructions répertoriées par le Shom; Conduites et câbles sous-marins répertoriés par le Shom. Licence CC BY-SA 4.0. These features have been re-projected, tiled, and re-styled for display; they are not presented in Shom's original form. Ne pas utiliser pour la navigation.

Australia and New Zealand

  • Bathymetry: © Commonwealth of Australia (Geoscience Australia) 2026, CC BY 4.0
  • Chart data: Contains data sourced from the LINZ Data Service licensed for reuse under CC BY 4.0

Tide and Tidal Current Predictions

Where a national agency publishes official predictions, we use them. Elsewhere, predictions are computed by harmonic analysis from published tidal constituents. Providers include:

  • NOAA Center for Operational Oceanographic Products and Services (United States)
  • Canadian Hydrographic Service, Fisheries and Oceans Canada (Canada)
  • UK Hydrographic Office (United Kingdom and Ireland): © Crown Copyright and/or database rights. Reproduced by permission of the Controller of His Majesty's Stationery Office and the UK Hydrographic Office (www.ukho.gov.uk)
  • Shom, Service hydrographique et océanographique de la Marine (France)
  • Australia: Reproduced by permission of the Bureau of Meteorology, © 2026 Commonwealth of Australia. www.bom.gov.au/copyright
  • Land Information New Zealand (New Zealand)
  • Danish Meteorological Institute (Denmark)
  • Rijkswaterstaat (Netherlands)
  • Instituto Hidrográfico (Portugal)
  • Puertos del Estado (Spain)
  • Bundesamt für Seeschifffahrt und Hydrographie (Germany)
  • Korea Hydrographic and Oceanographic Agency (Korea)
  • Japan Coast Guard Hydrographic and Oceanographic Department (Japan)
  • Central Weather Administration (Taiwan)
  • Hong Kong Observatory (Hong Kong)
  • Secretaría de Marina (Mexico)

Marine Weather Forecasts

Wind, sea state, swell, and other forecast values come from these models and services:

  • NOAA Global Forecast System (GFS), GFS-Wave, High-Resolution Rapid Refresh (HRRR), and National Blend of Models (public domain)
  • Data source: NOAA/National Weather Service (forecast text, United States)
  • Data source: Deutscher Wetterdienst (EWAM wave model and forecasts, Europe)
  • Source: Météo-France - modèle de vagues MFWAM (Licence Ouverte 2.0)
  • Contains Met Office data © Crown copyright, licensed CC BY-SA 4.0 (wave model, UK)
  • Australia: Reproduced by permission of the Bureau of Meteorology, © 2026 Commonwealth of Australia. www.bom.gov.au/copyright

Marine Warnings

Official marine warnings are reproduced without alteration of their content or intent, as issued by:

  • NOAA/National Weather Service (United States)
  • Data Source: Environment and Climate Change Canada. Contains information licenced under the Data Server End-use Licence of Environment and Climate Change Canada
  • Deutscher Wetterdienst (Germany)
  • Fuente: AEMET (Spain)
  • IPMA, Instituto Português do Mar e da Atmosfera (Portugal)
  • Met Éireann (Ireland)
  • MET Norway (Norway)
  • SMHI (Sweden)
  • MeteoAlarm (EUMETNET), CC BY 4.0 (Europe)
  • Australia: Reproduced by permission of the Bureau of Meteorology, © 2026 Commonwealth of Australia. www.bom.gov.au/copyright
  • Japan Meteorological Agency (Japan)
  • Korea Meteorological Administration (Korea)
  • Central Weather Administration (Taiwan), Open Government Data License v1.0

Weather Radar

Radar imagery is composited from national and regional networks, depending on the region:

  • Source: NOAA/NSSL Multi-Radar/Multi-Sensor (MRMS) (United States)
  • Data Source: Environment and Climate Change Canada
  • Source: EUMETNET OPERA weather radar network (CC BY 4.0) (Europe)
  • Source: Deutscher Wetterdienst (DWD), licensed under GeoNutzV / DL-DE BY 2.0 (Germany)
  • Radar data © KNMI (Royal Netherlands Meteorological Institute), licensed CC BY 4.0
  • Radar data © DMI (Danish Meteorological Institute), licensed CC BY 4.0
  • Radar data © Crown copyright, Met Office, licensed CC BY-SA 4.0 (United Kingdom)
  • Dati radar © Presidenza del Consiglio dei Ministri - Dipartimento della Protezione Civile, licensed CC BY-SA (Italy)
  • Source: Japan Meteorological Agency (JMA)
  • Data source: Central Weather Administration (CWA), Taiwan - Open Government Data License v1.0
  • Australia: Reproduced by permission of the Bureau of Meteorology, © 2026 Commonwealth of Australia. www.bom.gov.au/copyright

Licences

Data marked CC BY 4.0 or CC BY-SA 4.0 is used under the Creative Commons Attribution or Attribution-ShareAlike 4.0 International licences. Data marked ODbL is used under the Open Database License 1.0. UK public sector data is used under the Open Government Licence v3.0, and French public sector data under the Licence Ouverte 2.0 (Etalab). United States federal data is in the public domain. Australian Bureau of Meteorology data is reproduced under a Bureau of Meteorology Data Licence Agreement; the Bureau does not endorse this Service, and anyone wanting the Bureau's data in its original form should obtain it from the Bureau directly. Environment and Climate Change Canada data is used under its Data Server End-use Licence and carries no official status here. Where we have adapted data, for example by re-projecting, tiling, banding, or re-styling it, the result is ours and the adaptation is indicated here; the underlying data remains under its original licence. Where a licence requires derived material to be shared under the same licence, the layers derived from that source are available on request under that licence.

Questions about attribution or licensing: support@tidesnear.me