Legal notice and terms of use

Information given under Article 6 III-1 of French law no. 2004-575 of 21 June 2004, the publisher being established in France.

Publisher

Radif Partners
49 rue du Ressort
63000 Clermont-Ferrand, France
contact@usatidechart.com

Publication director: Radif Partners, responsible for the content of https://usatidechart.com.

Host

GitHub, Inc. (GitHub Pages)
88 Colin P Kelly Jr Street, San Francisco, CA 94107, United States
https://pages.github.com

Not for navigation

Tide Day shows predicted astronomical tides. They do not include the effects of wind, atmospheric pressure, storm surge, river discharge or ice, and the real water level can differ from them by a foot or more. The site is not an official nautical publication and must not be used to navigate, to judge a bar or channel crossing, or to decide whether an area is safe. Official charts, real-time water levels and notices to mariners take precedence over anything shown here.

The data and its source

High and low tide predictions are produced by the National Oceanic and Atmospheric Administration (NOAA), National Ocean Service, Center for Operational Oceanographic Products and Services. As works of the US government they are in the public domain; NOAA asks that its material be credited, which every page does. This site is independent of NOAA, which neither endorses nor reviews it. The curves between NOAA's highs and lows, the tide coefficient, the planner windows and the solunar periods are this site's own calculations and are presented as such, not as official government material.

Liability

Predictions are downloaded from NOAA and the calculations are tested before each release, yet errors cannot be ruled out. The publisher is not liable for decisions taken on the basis of this site. Please report any error through the contact page.

Intellectual property

Texts, design and code belong to the publisher; short quotations with a link are welcome. NOAA predictions remain in the public domain.

Embedding

The tide chart may be embedded for free with its credit link visible: see the embed page.

Personal data

The site sets no cookie and keeps nothing you choose or type. Details: privacy policy and cookies page.

Reporting unlawful content

Write to contact@usatidechart.com with the address of the page.

Governing law

French law applies; failing an amicable settlement, the courts of France have jurisdiction. Updated: 2026-10-13.