Datums for 9441156, POINT BROWN WA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9441156, POINT BROWN, WA
Status: Accepted (Jun 17 2004)
Units: Feet
Control Station: 9439040 Astoria, OR
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW9.60Mean Higher-High Water
MHW8.86Mean High Water
MTL5.17Mean Tide Level
MSL5.24Mean Sea Level
DTL4.80Mean Diurnal Tide Level
MLW1.49Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-5.21Station Datum
GT9.60Great Diurnal Range
MN7.38Mean Range of Tide
DHQ0.74Mean Diurnal High Water Inequality
DLQ1.48Mean Diurnal Low Water Inequality
HWI8.59Greenwich High Water Interval (in hours)
LWI2.04Greenwich 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
06/01/1982 - 06/30/1982




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