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 9455760, Nikiski AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9455760, Nikiski, AK
Status: Accepted (Jun 14 2018)
Units: Feet
Control Station: 9455500 Seldovia, AK
T.M.: 0
Epoch: 2012-2016
Datum: MLLW
DatumValueDescription
MHHW20.54Mean Higher-High Water
MHW19.81Mean High Water
MTL10.97Mean Tide Level
MSL11.29Mean Sea Level
DTL10.27Mean Diurnal Tide Level
MLW2.13Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD887.23North American Vertical Datum of 1988
STND-6.60Station Datum
GT20.54Great Diurnal Range
MN17.68Mean Range of Tide
DHQ0.73Mean Diurnal High Water Inequality
DLQ2.13Mean Diurnal Low Water Inequality
HWI1.19Greenwich High Water Interval (in hours)
LWI7.57Greenwich Low Water Interval (in hours)
Max Tide21.80Highest Observed Tide
Max Tide Date & Time12/26/1976 09:00Highest Observed Tide Date & Time
Min Tide-12.92Lowest Observed Tide
Min Tide Date & Time12/14/2008 08:54Lowest Observed Tide Date & Time
HAT25.61Highest Astronomical Tide
HAT Date & Time10/17/1993 01:36HAT Date and Time
LAT-5.78Lowest Astronomical Tide
LAT Date & Time06/14/1995 20:36LAT Date and Time
Tidal Datum Analysis Periods
10/01/1996 - 09/30/2010
07/01/2012 - 06/30/2017




Products available at 9455760 Nikiski, AK

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