Datums for 9458762, UNAVIKSHAK ISLAND AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9458762, UNAVIKSHAK ISLAND, AK
Status: Superseded (Apr 17 2003) (Accepted Sep 18 2000)
Units: Feet
Control Station: 9459450 Sand Point, AK
T.M.: 135
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW9.07Mean Higher-High Water
MHW8.27Mean High Water
MTL4.81Mean Tide Level
MSL4.69Mean Sea Level
DTL4.53Mean Diurnal Tide Level
MLW1.37Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-0.13Station Datum
GT9.06Great Diurnal Range
MN6.90Mean Range of Tide
DHQ0.80Mean Diurnal High Water Inequality
DLQ1.37Mean Diurnal Low Water Inequality
HWI11.25Greenwich High Water Interval (in hours)
LWI5.07Greenwich 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
07/10/1997 - 08/27/1997




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