Datums for 9439069, KNAPPA

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9439069, KNAPPA
Status: Accepted (Nov 20 2003)
Units: Feet
Control Station: 9439040 Astoria, OR
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
MHHW8.34Mean Higher-High Water
MHW7.67Mean High Water
MTL4.33Mean Tide Level
MSL4.36Mean Sea Level
DTL4.17Mean Diurnal Tide Level
MLW1.00Mean Low Water
MLLW0.00Mean Lower-Low Water
STND-2.85Station Datum
GT8.34Great Diurnal Range
MN6.67Mean Range of Tide
DHQ0.68Mean Diurnal High Water Inequality
DLQ1.00Mean Diurnal Low Water Inequality
HWI9.64Greenwich High Water Interval (in hours)
LWI3.93Greenwich 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
10/01/1981 - 11/30/1981

Products available at 9439069 KNAPPA,