Notice: Data collected at this station are from a Partnership with the National Park Service, Glacier Bay National Park and Preserve. These data are subject to NOAA's National Ocean Service (NOS) routine quality assurance procedures on a monthly basis with data available for the previous month but are not available in real-time from NOAA. For access to the real-time data at this location visit AOOS Ocean Data Explorer at

Datums for 9452534, BARTLETT COVE, GLACIER BAY

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Status: Accepted (Jan 30 2023)
Units: Feet
Control Station: 9452210 Juneau, AK
T.M.: 0
Epoch: 2012-2016
Datum: MLLW
MHHW14.74Mean Higher-High Water
MHW13.82Mean High Water
MTL7.72Mean Tide Level
MSL7.72Mean Sea Level
DTL7.37Mean Diurnal Tide Level
MLW1.63Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD882.81North American Vertical Datum of 1988
STND-19.60Station Datum
GT14.74Great Diurnal Range
MN12.19Mean Range of Tide
DHQ0.93Mean Diurnal High Water Inequality
DLQ1.63Mean Diurnal Low Water Inequality
HWI9.94Greenwich High Water Interval (in hours)
LWI3.75Greenwich 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
HAT18.84Highest Astronomical Tide
HAT Date & Time11/27/2038 22:18HAT Date and Time
LAT-4.43Lowest Astronomical Tide
LAT Date & Time06/07/2035 17:00LAT Date and Time
Tidal Datum Analysis Periods
06/01/2022 - 08/31/2022

Products available at 9452534 BARTLETT COVE, GLACIER BAY,