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Datums for 9450286, Dunbar Inlet 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: 9450286, Dunbar Inlet GPS Tide Buoy, AK
Status: Accepted (Sep 26 2016)
Units: Feet
Control Station: 9450460 Ketchikan, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW13.05Mean Higher-High Water
MHW12.18Mean High Water
MTL6.86Mean Tide Level
MSL6.86Mean Sea Level
DTL6.52Mean Diurnal Tide Level
MLW1.54Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND19.02Station Datum
GT13.05Great Diurnal Range
MN10.64Mean Range of Tide
DHQ0.87Mean Diurnal High Water Inequality
DLQ1.55Mean Diurnal Low Water Inequality
HWI9.49Greenwich High Water Interval (in hours)
LWI3.20Greenwich 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
05/07/2016 - 06/05/2016




Products available at 9450286 Dunbar Inlet GPS Tide Buoy, AK

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