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Datums for 9455437, Port Graham AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9455437, Port Graham, AK
Status: Accepted (Apr 9 2018)
Units: Feet
T.M.: 135
Epoch: 2012-2016
Datum: MLLW
DatumValueDescription
MHHW16.92Mean Higher-High Water
MHW16.21Mean High Water
MTL8.95Mean Tide Level
MSL8.99Mean Sea Level
DTL8.46Mean Diurnal Tide Level
MLW1.69Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND5.19Station Datum
GT16.93Great Diurnal Range
MN14.52Mean Range of Tide
DHQ0.71Mean Diurnal High Water Inequality
DLQ1.69Mean Diurnal Low Water Inequality
HWI11.07Greenwich High Water Interval (in hours)
LWI4.63Greenwich Low Water Interval (in hours)
Max TideHighest Observed Tide
Max Tide Date & Time Highest Observed Tide Date & Time
Min TideLowest Observed Tide
Min Tide Date & Time Lowest Observed Tide Date & 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