Datums for 9462694, Akutan, Alaska AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9462694, Akutan, Alaska, AK
Status: Accepted (Jun 19 2009)
Units: Feet
Control Station: 9462620 Unalaska, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.73Mean Higher-High Water
MHW3.42Mean High Water
MTL2.16Mean Tide Level
MSL2.16Mean Sea Level
DTL1.86Mean Diurnal Tide Level
MLW0.89Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-38.21Station Datum
GT3.73Great Diurnal Range
MN2.53Mean Range of Tide
DHQ0.31Mean Diurnal High Water Inequality
DLQ0.90Mean 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
HAT4.84Highest Astronomical Tide
HAT Date & Time07/13/2026 11:12HAT Date and Time
LAT-1.98Lowest Astronomical Tide
LAT Date & Time12/06/2025 09:36LAT Date and Time
Tidal Datum Analysis Periods
04/01/2009 - 04/30/2009




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