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Datums for 9457512, Sitkalidak Island GPS Tide Buoy AK


Data Quality Data from this station was collected using methodology that does not meet CO-OPS highest level of accuracy (no more than 10 cm, 95% Confidence Interval (CI) referenced to a tidal datum). Recognizing that lower quality data can be used for certain applications CO-OPS is making this data available to its users with restraint. The average six-minute water level observations derived from this system have an accuracy ranging from 10.0 - 30.0 cm, 95% CI on datum. Users are cautioned to consider the accuracy of these data before using them for critical navigational or coastal engineering purposes.
NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9457512, Sitkalidak Island GPS Tide Buoy, AK
Status: Accepted (Oct 27 2016)
Units: Feet
T.M.: 135
Epoch: 2007-2011
Datum: MLLW
DatumValueDescription
MHHW8.18Mean Higher-High Water
MHW7.57Mean High Water
MTL4.35Mean Tide Level
MSL4.33Mean Sea Level
DTL4.09Mean Diurnal Tide Level
MLW1.13Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-42.67Station Datum
GT8.18Great Diurnal Range
MN6.44Mean Range of Tide
DHQ0.61Mean Diurnal High Water Inequality
DLQ1.13Mean Diurnal Low Water Inequality
HWI10.38Greenwich High Water Interval (in hours)
LWI4.07Greenwich 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
06/26/2016 - 07/25/2016




Products available at 9457512 Sitkalidak Island GPS Tide Buoy, AK

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