Datums for 9468132, ST. MICHAEL, NORTON SOUND AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9468132, ST. MICHAEL, NORTON SOUND, AK
Status: Accepted (Jan 13 2026)
Units: Feet
Control Station: 9468756 Nome, Norton Sound, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.89Mean Higher-High Water
MHW3.55Mean High Water
MTL1.92Mean Tide Level
MSL1.83Mean Sea Level
DTL1.94Mean Diurnal Tide Level
MLW0.28Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88-1.33North American Vertical Datum of 1988
STND-27.65Station Datum
GT3.89Great Diurnal Range
MN3.27Mean Range of Tide
DHQ0.34Mean Diurnal High Water Inequality
DLQ0.29Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich 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
07/01/2025 - 09/30/2025




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