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Datums for 9450642, Northern Carroll 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.

Elevations on Station Datum

Station: 9450642, Northern Carroll Inlet GPS Tide Buoy, AK
Status: Accepted (Sep 29 2016)
Units: Feet
T.M.: 135
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW-4.58Mean Higher-High Water
MHW-5.48Mean High Water
MTL-12.02Mean Tide Level
MSL-12.00Mean Sea Level
DTL-12.36Mean Diurnal Tide Level
MLW-18.55Mean Low Water
MLLW-20.15Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT15.58Great Diurnal Range
MN13.07Mean Range of Tide
DHQ0.91Mean Diurnal High Water Inequality
DLQ1.60Mean Diurnal Low Water Inequality
HWI9.46Greenwich High Water Interval (in hours)
LWI3.14Greenwich 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
05/15/2016 - 06/13/2016




Products available at 9450642 Northern Carroll Inlet GPS Tide Buoy, AK

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