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Datums for 9451454, Security Bay GPS 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.

Elevations on Station Datum

Station: 9451454, Security Bay GPS Buoy, AK
Status: Accepted (Jul 19 2016)
Units: Feet
T.M.: 135
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW9.23Mean Higher-High Water
MHW8.42Mean High Water
MTL3.02Mean Tide Level
MSL3.02Mean Sea Level
DTL2.69Mean Diurnal Tide Level
MLW-2.38Mean Low Water
MLLW-3.85Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT13.07Great Diurnal Range
MN10.80Mean Range of Tide
DHQ0.81Mean Diurnal High Water Inequality
DLQ1.46Mean Diurnal Low Water Inequality
HWI9.66Greenwich High Water Interval (in hours)
LWI3.37Greenwich Low Water Interval (in hours)
MaximumHighest Observed Water Level
Max Date & Time Highest Observed Water Level Date and Time
MinimumLowest Observed Water Level
Min Date & Time Lowest Observed Water Level Date and 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
02/01/2015 - 02/28/2015




Products available at 9451454 Security Bay GPS Buoy, AK

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