Datums for 9451785, THE BROTHERS, STEPHENS PASSAGE AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9451785, THE BROTHERS, STEPHENS PASSAGE, AK
Status: Accepted (Aug 2 2004)
Units: Feet
Control Station: 9450460 Ketchikan, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW14.83Mean Higher-High Water
MHW13.90Mean High Water
MTL7.73Mean Tide Level
MSL7.79Mean Sea Level
DTL7.42Mean Diurnal Tide Level
MLW1.56Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND3.00Station Datum
GT14.84Great Diurnal Range
MN12.35Mean Range of Tide
DHQ0.93Mean Diurnal High Water Inequality
DLQ1.56Mean Diurnal Low Water Inequality
HWI9.72Greenwich High Water Interval (in hours)
LWI3.48Greenwich 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
HAT18.87Highest Astronomical Tide
HAT Date & Time11/15/2016 22:00HAT Date and Time
LAT-4.51Lowest Astronomical Tide
LAT Date & Time05/27/2021 16:30LAT Date and Time
Tidal Datum Analysis Periods
04/17/1995 - 05/16/1995




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