NOAA Web Site Link Tides and Currents Home Page Transparent placeholder image

Datums for 9457804, Alitak AK


Elevations on Station Datum

Station: 9457804, Alitak, AK
Status: Accepted (Dec 9 2011)
Units: Feet
T.M.: 0
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW17.24Mean Higher-High Water
MHW16.44Mean High Water
MTL11.79Mean Tide Level
MSL11.71Mean Sea Level
DTL11.41Mean Diurnal Tide Level
MLW7.15Mean Low Water
MLLW5.57Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT11.67Great Diurnal Range
MN9.29Mean Range of Tide
DHQ0.80Mean Diurnal High Water Inequality
DLQ1.58Mean Diurnal Low Water Inequality
HWI10.69Greenwich High Water Interval (in hours)
LWI4.63Greenwich Low Water Interval (in hours)
Maximum21.77Highest Observed Water Level
Max Date & Time11/25/2007 22:48Highest Observed Water Level Date and Time
Minimum0.69Lowest Observed Water Level
Min Date & Time12/14/2008 06:00Lowest Observed Water Level Date and Time
HAT20.77Highest Astronomical Tide
HAT Date & Time11/13/1985 22:54HAT Date and Time
LAT1.66Lowest Astronomical Tide
LAT Date & Time07/12/1987 18:12LAT Date and Time
Tidal Datum Analysis Periods
05/01/2007 - 04/30/2008
07/01/2009 - 06/30/2011




Products available at 9457804 Alitak, AK

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