Datums for 9452005, North Shore Upper Endicott Arm AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9452005, North Shore Upper Endicott Arm, AK
Status: Accepted (Mar 25 2026)
Units: Feet
Control Station: 9452210 Juneau, AK
T.M.: 135
Epoch: 2012-2016
Datum: MLLW
DatumValueDescription
MHHW15.91Mean Higher-High Water
MHW14.97Mean High Water
MTL8.27Mean Tide Level
MSL8.41Mean Sea Level
DTL7.95Mean Diurnal Tide Level
MLW1.58Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD883.32North American Vertical Datum of 1988
STND4.82Station Datum
GT15.90Great Diurnal Range
MN13.40Mean Range of Tide
DHQ0.94Mean Diurnal High Water Inequality
DLQ1.57Mean Diurnal Low Water Inequality
HWI9.87Greenwich High Water Interval (in hours)
LWI3.62Greenwich 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
05/01/2025 - 07/31/2025




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