About the data

Privacy and terms

In-app Privacy, Terms, and Cookies — hosted on tidealerts.com.

Legal pages in the app are the live policies on tidealerts.com, shown with native back.

Privacy: https://tidealerts.com/policies/privacy-policy
Terms: https://tidealerts.com/policies/terms-and-conditions

In-app Privacy Policy

Privacy Policy inside the app.

Questions: sales@sentientthings.com.

MLLW, NAVD88, and what the numbers mean

Tide chart numbers are height vs a zero. Measured bottom and bridge datums can show depth and clearance on charts and calendars — available now for Sentient Things stations, and coming for NOAA, SECOORA, NERACOOS, and USGS.