Datums for 9440047, WASHOUGAL, COLUMBIA RIVER WA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9440047, WASHOUGAL, COLUMBIA RIVER, WA
Status: Accepted (Mar 10 2017)
Units: Feet
Control Station: 9439040 Astoria, OR
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.84Mean Higher-High Water
MHW1.46Mean High Water
MTL0.87Mean Tide Level
MSL0.81Mean Sea Level
DTL0.92Mean Diurnal Tide Level
MLW0.28Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-14.65Station Datum
GT1.85Great Diurnal Range
MN1.19Mean Range of Tide
DHQ0.38Mean Diurnal High Water Inequality
DLQ0.28Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich 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
08/01/2016 - 10/31/2016




Products available at 9440047 WASHOUGAL, COLUMBIA RIVER, WA