Datums for 9458471, Poltava Island


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9458471, Poltava Island
Status: Superseded (Apr 17 2003) (Accepted Oct 6 2000)
Units: Feet
Control Station: 9459450 Sand Point, AK
T.M.: 135
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW11.04Mean Higher-High Water
MHW10.22Mean High Water
MTL5.88Mean Tide Level
MSL5.80Mean Sea Level
DTL5.52Mean Diurnal Tide Level
MLW1.53Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND0.94Station Datum
GT11.04Great Diurnal Range
MN8.69Mean Range of Tide
DHQ0.81Mean Diurnal High Water Inequality
DLQ1.53Mean Diurnal Low Water Inequality
HWI11.09Greenwich High Water Interval (in hours)
LWI4.91Greenwich 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
06/28/2000 - 07/25/2000




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