Datums for 9452017, FORD'S TERROR, STEPHEN'S PASS AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9452017, FORD'S TERROR, STEPHEN'S PASS, AK
Status: Accepted (Apr 01 2026)
Units: Feet
Control Station: 9452210 Juneau, AK
T.M.: 135
Epoch: 2012-2016
Datum: MLLW
DatumValueDescription
MHHW13.00Mean Higher-High Water
MHW12.03Mean High Water
MTL6.42Mean Tide Level
MSL6.17Mean Sea Level
DTL6.50Mean Diurnal Tide Level
MLW0.80Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.24North American Vertical Datum of 1988
STND-22.00Station Datum
GT13.00Great Diurnal Range
MN11.23Mean Range of Tide
DHQ0.97Mean Diurnal High Water Inequality
DLQ0.79Mean Diurnal Low Water Inequality
HWI10.48Greenwich High Water Interval (in hours)
LWI5.09Greenwich 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




Products available at 9452017 FORD'S TERROR, STEPHEN'S PASS, AK