Datums for 8417881, GREAT CHEBEAGUE ISLAND ME


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8417881, GREAT CHEBEAGUE ISLAND, ME
Status: Accepted (Apr 20 2004)
Units: Feet
Control Station: 8418150 Portland, ME
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW9.91Mean Higher-High Water
MHW9.47Mean High Water
MTL4.91Mean Tide Level
MSL4.94Mean Sea Level
DTL4.96Mean Diurnal Tide Level
MLW0.35Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-1.14Station Datum
GT9.90Great Diurnal Range
MN9.11Mean Range of Tide
DHQ0.44Mean Diurnal High Water Inequality
DLQ0.34Mean Diurnal Low Water Inequality
HWI3.62Greenwich High Water Interval (in hours)
LWI9.78Greenwich 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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