Datums for 9449982, Richardson WA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9449982, Richardson, WA
Status: Accepted (Apr 17 2003)
Units: Feet
Control Station: 9449880 Friday Harbor, WA
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW7.17Mean Higher-High Water
MHW6.63Mean High Water
MTL4.36Mean Tide Level
MSL4.30Mean Sea Level
DTL3.58Mean Diurnal Tide Level
MLW2.09Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-3.17Station Datum
GT7.17Great Diurnal Range
MN4.55Mean Range of Tide
DHQ0.53Mean Diurnal High Water Inequality
DLQ2.09Mean Diurnal Low Water Inequality
HWI11.89Greenwich High Water Interval (in hours)
LWI5.46Greenwich Low Water Interval (in hours)
Max Tide9.58Highest Observed Tide
Max Tide Date & Time12/16/1997 14:36Highest Observed Tide Date & Time
Min Tide-3.85Lowest Observed Tide
Min Tide Date & Time12/24/1999 06:12Lowest Observed Tide Date & Time
HAT8.68Highest Astronomical Tide
HAT Date & Time12/30/1986 20:48HAT Date and Time
LAT-3.85Lowest Astronomical Tide
LAT Date & Time06/22/1986 17:36LAT Date and Time
Tidal Datum Analysis Periods
04/01/1998 - 03/31/2000




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