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Datums for 9454511, Port Chalmers AK


Elevations on Station Datum

Station: 9454511, Port Chalmers, AK
Status: Accepted (Nov 8 2011)
Units: Feet
T.M.: 135
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW12.13Mean Higher-High Water
MHW11.21Mean High Water
MTL6.44Mean Tide Level
MSL6.55Mean Sea Level
DTL6.17Mean Diurnal Tide Level
MLW1.68Mean Low Water
MLLW0.22Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT11.91Great Diurnal Range
MN9.53Mean Range of Tide
DHQ0.93Mean Diurnal High Water Inequality
DLQ1.46Mean Diurnal Low Water Inequality
HWI10.02Greenwich High Water Interval (in hours)
LWI3.69Greenwich 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
09/01/1999 - 09/30/1999




Products available at 9454511 Port Chalmers, AK

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