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Datums for 9454240, Valdez AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9454240, Valdez, AK
Status: Accepted (Sep 29 2011)
Units: Feet
Control Station:
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW12.15Mean Higher-High Water
MHW11.22Mean High Water
MTL6.36Mean Tide Level
MSL6.50Mean Sea Level
DTL6.08Mean Diurnal Tide Level
MLW1.51Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-6.74Station Datum
GT12.15Great Diurnal Range
MN9.70Mean Range of Tide
DHQ0.94Mean Diurnal High Water Inequality
DLQ1.51Mean Diurnal Low Water Inequality
HWI10.03Greenwich High Water Interval (in hours)
LWI3.72Greenwich Low Water Interval (in hours)
Max Tide10.32Highest Observed Tide
Max Tide Date & Time11/11/1981 20:12Highest Observed Tide Date & Time
Min Tide-12.18Lowest Observed Tide
Min Tide Date & Time12/14/2008 04:48Lowest Observed Tide Date & Time
HAT15.63Highest Astronomical Tide
HAT Date & Time11/13/1985 22:00HAT Date and Time
LAT-3.91Lowest Astronomical Tide
LAT Date & Time06/14/1995 17:00LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001




Products available at 9454240 Valdez, AK

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