Datums for 9454729, PT. PERRY, PERRY ISLAND


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9454729, PT. PERRY, PERRY ISLAND
Status: Superseded (Apr 17 2003) (Accepted Jan 22 1998)
Units: Feet
Control Station: 9454240 Valdez, AK
T.M.: 135
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW12.04Mean Higher-High Water
MHW11.10Mean High Water
MTL6.29Mean Tide Level
MSL6.43Mean Sea Level
DTL6.02Mean Diurnal Tide Level
MLW1.47Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND3.90Station Datum
GT12.04Great Diurnal Range
MN9.63Mean Range of Tide
DHQ0.94Mean Diurnal High Water Inequality
DLQ1.48Mean Diurnal Low Water Inequality
HWI10.07Greenwich High Water Interval (in hours)
LWI3.76Greenwich 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
10/01/1997 - 10/31/1997




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