Water level station

Plymouth Harbor

CM-12589

Water Level Station • HyFi 87HFX87M+C9Q7 • 41.9636°, -70.6665°

Last reading Sep 10, 2026 06:10 UTC • 21 minutes ago

Public
Sensor by HyFi
Sponsored by
🌊
5.88 ft
Water level
above MLLW · provisional
🕒
21 min
Since reading
samples 10 min · published ~1h later
Location
Datum Referenced to MLLW (provisional) by comparison with NOAA 8443970. Not surveyed to NAVD88, so no elevation is shown. Tidal predictions are fit from this station's own record. 29 day(s) of record — under the 30 NOAA wants, so this will still move.
Observed Water Level

Measured tide referenced to a provisional MLLW. Predictions are computed by harmonic analysis of this gauge's own record and are provisional while the datum is.

Time:
history window · forecast +3 days
Loading weather along the forecast…
Water level measured by HyFi, referenced to MLLW by comparison with NOAA 8443970. The dashed line is the astronomical tide from harmonics fit to this station's own record; the solid forecast adds the latest observed surge, decaying forward.

🌙 Shaded areas show night at the station's location