Datums for 8410140, Eastport ME


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8410140, Eastport, ME
Status: Superseded (Apr 17 2003) (Accepted May 26 1998)
Units: Feet
Control Station: 8418150 Portland, ME
T.M.: 0
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW19.32Mean Higher-High Water
MHW18.80Mean High Water
MTL9.62Mean Tide Level
MSL9.71Mean Sea Level
DTL9.66Mean Diurnal Tide Level
MLW0.44Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-4.79Station Datum
GT19.32Great Diurnal Range
MN18.36Mean Range of Tide
DHQ0.52Mean Diurnal High Water Inequality
DLQ0.44Mean Diurnal Low Water Inequality
HWI3.30Greenwich High Water Interval (in hours)
LWI9.71Greenwich Low Water Interval (in hours)
Max Tide24.38Highest Observed Tide
Max Tide Date & Time04/10/2020 08:54Highest Observed Tide Date & Time
Min Tide-4.67Lowest Observed Tide
Min Tide Date & Time08/09/1972 00:00Lowest Observed Tide Date & Time
HAT22.77Highest Astronomical Tide
HAT Date & Time11/15/2016 15:48HAT Date and Time
LAT-3.45Lowest Astronomical Tide
LAT Date & Time04/01/2033 10:48LAT Date and Time
Tidal Datum Analysis Periods
01/01/1960 - 12/31/1962
01/01/1964 - 12/31/1975




Products available at 8410140 Eastport, ME