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Datums for 9459251, Bird Island, Shumagin Bank AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9459251, Bird Island, Shumagin Bank, AK
Status: Accepted (Nov 7 2013)
Units: Feet
Control Station: 9459450 Sand Point, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW7.05Mean Higher-High Water
MHW6.32Mean High Water
MTL3.85Mean Tide Level
MSL3.80Mean Sea Level
DTL3.52Mean Diurnal Tide Level
MLW1.37Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-1.29Station Datum
GT7.05Great Diurnal Range
MN4.96Mean Range of Tide
DHQ0.72Mean Diurnal High Water Inequality
DLQ1.37Mean Diurnal Low Water Inequality
HWI11.11Greenwich High Water Interval (in hours)
LWI4.78Greenwich 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
HAT9.24Highest Astronomical Tide
HAT Date & Time12/12/1985 22:30HAT Date and Time
LAT-2.89Lowest Astronomical Tide
LAT Date & Time06/22/1986 17:30LAT Date and Time
Tidal Datum Analysis Periods
07/14/2013 - 08/13/2013




Products available at 9459251 Bird Island, Shumagin Bank, AK

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