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Datums for 9451438, Entrance Island AK


Elevations on Station Datum

Station: 9451438, Entrance Island, AK
Status: Accepted (Aug 16 2006)
Units: Feet
T.M.: 135
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW11.21Mean Higher-High Water
MHW10.35Mean High Water
MTL4.27Mean Tide Level
MSL4.30Mean Sea Level
DTL3.93Mean Diurnal Tide Level
MLW-1.81Mean Low Water
MLLW-3.35Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT14.56Great Diurnal Range
MN12.16Mean Range of Tide
DHQ0.86Mean Diurnal High Water Inequality
DLQ1.54Mean Diurnal Low Water Inequality
HWI9.71Greenwich High Water Interval (in hours)
LWI3.44Greenwich Low Water Interval (in hours)
MaximumHighest Observed Water Level
Max Date & Time Highest Observed Water Level Date and Time
MinimumLowest Observed Water Level
Min Date & Time Lowest Observed Water Level Date and Time
HAT14.49Highest Astronomical Tide
HAT Date & Time11/13/1985 21:54HAT Date and Time
LAT-7.30Lowest Astronomical Tide
LAT Date & Time12/24/1999 04:36LAT Date and Time
Tidal Datum Analysis Periods
05/01/2006 - 05/31/2006




Products available at 9451438 Entrance Island, AK

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services