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Status: Superseded (Apr 17 2003) (Accepted May 19 2000)
Units: Feet
Control Station: 9439040 Astoria, OR
T.M.: 120
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW8.30Mean Higher-High Water
MHW7.58Mean High Water
MTL4.50Mean Tide Level
MSL4.50Mean Sea Level
DTL4.15Mean Diurnal Tide Level
MLW1.42Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-4.18Station Datum
GT8.30Great Diurnal Range
MN6.16Mean Range of Tide
DHQ0.72Mean Diurnal High Water Inequality
DLQ1.41Mean Diurnal Low Water Inequality
HWI8.52Greenwich High Water Interval (in hours)
LWI1.95Greenwich 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
02/12/1997 - 04/10/1997




Products available at 9440572 JETTY A, COLUMBIA RIVER, WA