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Datums for 9455437, Port Graham AK


Elevations on Station Datum

Station: 9455437, Port Graham, AK
Status: Accepted (Jun 2 2014)
Units: Feet
T.M.: 135
Epoch: 2007-2011
Datum: STND
DatumValueDescription
MHHW11.73Mean Higher-High Water
MHW11.01Mean High Water
MTL3.75Mean Tide Level
MSL3.76Mean Sea Level
DTL3.26Mean Diurnal Tide Level
MLW-3.51Mean Low Water
MLLW-5.20Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT16.93Great Diurnal Range
MN14.52Mean Range of Tide
DHQ0.71Mean Diurnal High Water Inequality
DLQ1.69Mean Diurnal Low Water Inequality
HWI11.09Greenwich High Water Interval (in hours)
LWI4.65Greenwich 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
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
06/01/1980 - 06/30/1980




Products available at 9455437 Port Graham, AK

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