Datums for 9455920, Anchorage AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9455920, Anchorage, AK
Status: Superseded (Apr 17 2003) (Accepted May 7 2002)
Units: Feet
Control Station:
T.M.: 0
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW29.01Mean Higher-High Water
MHW28.30Mean High Water
MTL15.30Mean Tide Level
MSL16.45Mean Sea Level
DTL14.50Mean Diurnal Tide Level
MLW2.30Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-6.31Station Datum
GT29.01Great Diurnal Range
MN26.00Mean Range of Tide
DHQ0.71Mean Diurnal High Water Inequality
DLQ2.30Mean Diurnal Low Water Inequality
HWI3.60Greenwich High Water Interval (in hours)
LWI10.33Greenwich Low Water Interval (in hours)
Max Tide34.81Highest Observed Tide
Max Tide Date & Time11/06/2002 04:12Highest Observed Tide Date & Time
Min Tide-6.43Lowest Observed Tide
Min Tide Date & Time12/25/1999 12:42Lowest Observed Tide Date & Time
HAT33.77Highest Astronomical Tide
HAT Date & Time11/16/2016 04:18HAT Date and Time
LAT-5.05Lowest Astronomical Tide
LAT Date & Time01/15/2036 12:00LAT Date and Time
Tidal Datum Analysis Periods
01/01/1994 - 12/31/1998




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