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Datums for 9454907, BLACKSTONE BAY, PR. WILLIAM SOUND AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9454907, BLACKSTONE BAY, PR. WILLIAM SOUND, AK
Status: Accepted (Jun 16 2011)
Units: Feet
Control Station: 9454240 Valdez, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW12.13Mean Higher-High Water
MHW11.22Mean High Water
MTL6.36Mean Tide Level
MSL6.49Mean Sea Level
DTL6.07Mean Diurnal Tide Level
MLW1.49Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND0.19Station Datum
GT12.13Great Diurnal Range
MN9.72Mean Range of Tide
DHQ0.91Mean Diurnal High Water Inequality
DLQ1.49Mean Diurnal Low Water Inequality
HWI10.12Greenwich High Water Interval (in hours)
LWI3.82Greenwich 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
09/10/1995 - 10/11/1995
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 9454907 BLACKSTONE BAY, PR. WILLIAM SOUND, AK

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services