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Datums for 9454240, Valdez AK


Elevations on Station Datum

Station: 9454240, Valdez, AK
Status: Accepted (Sep 29 2011)
Units: Feet
T.M.: 135
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW18.89Mean Higher-High Water
MHW17.96Mean High Water
MTL13.10Mean Tide Level
MSL13.24Mean Sea Level
DTL12.82Mean Diurnal Tide Level
MLW8.25Mean Low Water
MLLW6.74Mean Lower-Low Water
NAVD88
STND0.00Station 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)
Maximum23.80Highest Observed Water Level
Max Date & Time11/11/1981 20:12Highest Observed Water Level Date and Time
Minimum1.30Lowest Observed Water Level
Min Date & Time12/14/2008 04:48Lowest Observed Water Level Date and Time
HAT22.38Highest Astronomical Tide
HAT Date & Time11/13/1985 22:00HAT Date and Time
LAT2.83Lowest 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
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