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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: Accepted (Dec 15 2011)
Units: Feet
Control Station:
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW29.16Mean Higher-High Water
MHW28.43Mean High Water
MTL15.34Mean Tide Level
MSL16.47Mean Sea Level
DTL14.58Mean Diurnal Tide Level
MLW2.25Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-6.27Station Datum
GT29.16Great Diurnal Range
MN26.19Mean Range of Tide
DHQ0.73Mean Diurnal High Water Inequality
DLQ2.25Mean Diurnal Low Water Inequality
HWI3.65Greenwich High Water Interval (in hours)
LWI10.41Greenwich Low Water Interval (in hours)
Max Tide34.86Highest Observed Tide
Max Tide Date & Time11/06/2002 04:12Highest Observed Tide Date & Time
Min Tide-6.39Lowest Observed Tide
Min Tide Date & Time12/25/1999 12:42Lowest Observed Tide Date & Time
HAT34.66Highest Astronomical Tide
HAT Date & Time10/17/1993 04:12HAT Date and Time
LAT-4.54Lowest Astronomical Tide
LAT Date & Time01/21/1996 10:54LAT Date and Time
Tidal Datum Analysis Periods
01/01/1997 - 12/31/2001
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 9455920 Anchorage, AK

Revised: 08/08/2018
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