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: Accepted (Apr 17 2003)
Units: Feet
Control Station:
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW19.27Mean Higher-High Water
MHW18.79Mean High Water
MTL9.62Mean Tide Level
MSL9.70Mean Sea Level
DTL9.63Mean Diurnal Tide Level
MLW0.44Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD889.93North American Vertical Datum of 1988
STND-4.80Station Datum
GT19.27Great Diurnal Range
MN18.35Mean Range of Tide
DHQ0.48Mean Diurnal High Water Inequality
DLQ0.45Mean Diurnal Low Water Inequality
HWI3.30Greenwich High Water Interval (in hours)
LWI9.69Greenwich Low Water Interval (in hours)
Max Tide24.22Highest Observed Tide
Max Tide Date & Time01/10/1997 16:18Highest Observed Tide Date & Time
Min Tide-4.68Lowest Observed Tide
Min Tide Date & Time08/09/1972 00:00Lowest Observed Tide Date & Time
HAT22.95Highest Astronomical Tide
HAT Date & Time11/05/1998 16:06HAT Date and Time
LAT-3.60Lowest Astronomical Tide
LAT Date & Time02/09/1997 23:24LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




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