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Datums for 9458519, Chowiet island AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9458519, Chowiet island, AK
Status: Accepted (Apr 17 2003)
Units: Feet
Control Station: 9459450 Sand Point, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW8.96Mean Higher-High Water
MHW8.17Mean High Water
MTL4.79Mean Tide Level
MSL4.70Mean Sea Level
DTL4.48Mean Diurnal Tide Level
MLW1.42Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-6.32Station Datum
GT8.95Great Diurnal Range
MN6.75Mean Range of Tide
DHQ0.79Mean Diurnal High Water Inequality
DLQ1.42Mean Diurnal Low Water Inequality
HWI10.94Greenwich High Water Interval (in hours)
LWI4.74Greenwich 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
07/01/2001 - 07/31/2001




Products available at 9458519 Chowiet island, AK

Revised: 08/08/2018
NOAA / National Ocean Service
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