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Datums for 9455500, Seldovia AK


NOTICE: This stations datums are computed using the 5-year Modified Procedure

Elevations on Mean Lower Low Water

Station: 9455500, Seldovia, AK
Status: Accepted (Feb 6 2018)
Units: Feet
T.M.: 0
Epoch: 2012-2016
Datum: MLLW
DatumValueDescription
MHHW18.05Mean Higher-High Water
MHW17.23Mean High Water
MTL9.47Mean Tide Level
MSL9.56Mean Sea Level
DTL9.10Mean Diurnal Tide Level
MLW1.70Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-6.78Station Datum
GT18.04Great Diurnal Range
MN15.53Mean Range of Tide
DHQ0.81Mean Diurnal High Water Inequality
DLQ1.70Mean Diurnal Low Water Inequality
HWI11.18Greenwich High Water Interval (in hours)
LWI4.86Greenwich Low Water Interval (in hours)
Max Tide25.62Highest Observed Tide
Max Tide Date & Time10/15/1966 22:54Highest Observed Tide Date & Time
Min Tide-6.61Lowest Observed Tide
Min Tide Date & Time12/15/2016 05:42Lowest Observed Tide Date & Time
HAT23.11Highest Astronomical Tide
HAT Date & Time11/05/1998 23:48HAT Date and Time
LAT-6.04Lowest Astronomical Tide
LAT Date & Time05/16/1999 17:54LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001
01/01/2012 - 12/31/2016




Products available at 9455500 Seldovia, AK

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