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Datums for 9459163, Herendeen Island, Shumagin Islands AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9459163, Herendeen Island, Shumagin Islands, AK
Status: Accepted (Oct 22 2009)
Units: Feet
Control Station: 9459450 Sand Point, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW7.39Mean Higher-High Water
MHW6.63Mean High Water
MTL3.99Mean Tide Level
MSL3.94Mean Sea Level
DTL3.69Mean Diurnal Tide Level
MLW1.36Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND1.93Station Datum
GT7.39Great Diurnal Range
MN5.27Mean Range of Tide
DHQ0.76Mean Diurnal High Water Inequality
DLQ1.36Mean Diurnal Low Water Inequality
HWI11.20Greenwich High Water Interval (in hours)
LWI4.90Greenwich 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
07/01/2009 - 07/31/2009




Products available at 9459163 Herendeen Island, Shumagin Islands, AK

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