Datums for 8418031, PORTLAND HEAD LIGHT STATION ME


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8418031, PORTLAND HEAD LIGHT STATION, ME
Status: Accepted (Aug 7 2003)
Units: Feet
Control Station: 8418150 Portland, ME
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW9.66Mean Higher-High Water
MHW9.22Mean High Water
MTL4.78Mean Tide Level
MSL4.81Mean Sea Level
DTL4.83Mean Diurnal Tide Level
MLW0.34Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND1.65Station Datum
GT9.66Great Diurnal Range
MN8.89Mean Range of Tide
DHQ0.43Mean Diurnal High Water Inequality
DLQ0.34Mean Diurnal Low Water Inequality
HWI3.55Greenwich High Water Interval (in hours)
LWI9.73Greenwich 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
10/01/1979 - 10/31/1979




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