Massachusetts tide charts

About Massachusetts tides

Rocky shores and the country's biggest northern ranges: Eastport flirts with 20 ft, and the Gulf of Maine funnels weather as much as tide. Harbors here float — or sit in the mud — on the moon's schedule.

Massachusetts has 89 NOAA tide stations — 49 reference stations whose predictions come from harmonic analysis of observations there, and 40 subordinate stations calculated from them. The biggest tidal range in the state is at Duxbury, Duxbury Harbor — 10.7 ft between mean higher high water and mean lower low water.