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Current Datum Value: 4.11

Datums for 9440572, JETTY A, COLUMBIA RIVER WA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9440572, JETTY A, COLUMBIA RIVER, WA
Status: Accepted (Oct 27 2003)
Units: Feet
Control Station: 9439040 Astoria, OR
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW8.49Mean Higher-High Water
MHW7.74Mean High Water
MTL4.58Mean Tide Level
MSL4.58Mean Sea Level
DTL4.24Mean Diurnal Tide Level
MLW1.43Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-4.11Station Datum
GT8.48Great Diurnal Range
MN6.31Mean Range of Tide
DHQ0.75Mean Diurnal High Water Inequality
DLQ1.43Mean Diurnal Low Water Inequality
HWI8.49Greenwich High Water Interval (in hours)
LWI1.88Greenwich 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
03/01/1997 - 03/31/1997




Products available at 9440572 JETTY A, COLUMBIA RIVER, WA

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services