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Datums for 9454511, Port Chalmers AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9454511, Port Chalmers, AK
Status: Accepted (Nov 8 2011)
Units: Feet
Control Station: 9454050 Cordova, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW11.91Mean Higher-High Water
MHW10.99Mean High Water
MTL6.22Mean Tide Level
MSL6.33Mean Sea Level
DTL5.95Mean Diurnal Tide Level
MLW1.46Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-0.22Station 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)
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
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