NOAA Web Site Link Tides and Currents Home Page Transparent placeholder image

Current Datum Value: 4.04

Datums for 8441841, GLOUCESTER HARBOR MA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8441841, GLOUCESTER HARBOR, MA
Status: Accepted (Apr 17 2003)
Units: Feet
Control Station: 8443970 Boston, MA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW9.57Mean Higher-High Water
MHW9.13Mean High Water
MTL4.73Mean Tide Level
MSL4.77Mean Sea Level
DTL4.79Mean Diurnal Tide Level
MLW0.33Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-4.04Station Datum
GT9.57Great Diurnal Range
MN8.80Mean Range of Tide
DHQ0.45Mean Diurnal High Water Inequality
DLQ0.33Mean Diurnal Low Water Inequality
HWI3.73Greenwich High Water Interval (in hours)
LWI9.87Greenwich Low Water Interval (in hours)
Max TideHighest Observed Tide
Max Tide Date & Time Highest Observed Tide Date & Time
Min TideLowest Observed Tide
Min Tide Date & Time Lowest Observed Tide Date & Time
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
07/01/1992 - 09/30/1992




Products available at 8441841 GLOUCESTER HARBOR, MA

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services