Datums for 8417208, Richmond ME


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8417208, Richmond, ME
Status: Accepted (Jan 30 2006)
Units: Feet
Control Station: 8418150 Portland, ME
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW5.79Mean Higher-High Water
MHW5.47Mean High Water
MTL2.83Mean Tide Level
MSL2.97Mean Sea Level
DTL2.90Mean Diurnal Tide Level
MLW0.19Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-25.13Station Datum
GT5.79Great Diurnal Range
MN5.29Mean Range of Tide
DHQ0.32Mean Diurnal High Water Inequality
DLQ0.18Mean Diurnal Low Water Inequality
HWI6.32Greenwich High Water Interval (in hours)
LWI0.58Greenwich 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
HAT6.98Highest Astronomical Tide
HAT Date & Time12/23/1999 19:00HAT Date and Time
LAT-0.84Lowest Astronomical Tide
LAT Date & Time11/06/1998 01:48LAT Date and Time
Tidal Datum Analysis Periods
08/01/2005 - 10/31/2005




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