NOAA Web Site Link Tides and Currents Home Page Transparent placeholder image

On Saturday, June 23rd, 2018 starting at 7:30 a.m to 8 p.m. EDT, there will be a system maintenance performed affecting the Tides and Currents web site (https://tidesandcurrents.noaa.gov). During this time, the Tides and Currents website will be running with limited capabilities. Click here for more information.

Datums for 9452368, SWANSON HARBOR AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9452368, SWANSON HARBOR, AK
Status: Accepted (Jun 11 2014)
Units: Feet
Control Station: 9452210 Juneau, AK
T.M.: 135
Epoch: 2007-2011
Datum: MLLW
DatumValueDescription
MHHW15.30Mean Higher-High Water
MHW14.28Mean High Water
MTL7.93Mean Tide Level
MSL8.02Mean Sea Level
DTL7.65Mean Diurnal Tide Level
MLW1.58Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-2.95Station Datum
GT15.30Great Diurnal Range
MN12.70Mean Range of Tide
DHQ1.02Mean Diurnal High Water Inequality
DLQ1.58Mean Diurnal Low Water Inequality
HWI9.75Greenwich High Water Interval (in hours)
LWI3.47Greenwich 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
10/01/1986 - 10/31/1986




Products available at 9452368 SWANSON HARBOR, AK

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