Datums for 9455558, COAL POINT AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9455558, COAL POINT, AK
Status: Accepted (Apr 2 2019)
Units: Feet
Control Station: 9455500 Seldovia, AK
T.M.: 0
Epoch: 2012-2016
Datum: MLLW
DatumValueDescription
MHHW18.43Mean Higher-High Water
MHW17.59Mean High Water
MTL9.63Mean Tide Level
MSL9.73Mean Sea Level
DTL9.22Mean Diurnal Tide Level
MLW1.66Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD885.10North American Vertical Datum of 1988
STND-2.29Station Datum
GT18.43Great Diurnal Range
MN15.94Mean Range of Tide
DHQ0.84Mean Diurnal High Water Inequality
DLQ1.66Mean Diurnal Low Water Inequality
HWI11.22Greenwich High Water Interval (in hours)
LWI4.90Greenwich 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
09/01/2018 - 11/30/2018




Products available at 9455558 COAL POINT, AK