Datums for 9443090, Neah Bay WA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9443090, Neah Bay, WA
Status: Accepted (Sep 29 2011)
Units: Feet
Control Station:
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW7.96Mean Higher-High Water
MHW7.11Mean High Water
MTL4.36Mean Tide Level
MSL4.32Mean Sea Level
DTL3.98Mean Diurnal Tide Level
MLW1.60Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.84North American Vertical Datum of 1988
STND-2.00Station Datum
GT7.96Great Diurnal Range
MN5.51Mean Range of Tide
DHQ0.85Mean Diurnal High Water Inequality
DLQ1.59Mean Diurnal Low Water Inequality
HWI8.55Greenwich High Water Interval (in hours)
LWI2.29Greenwich Low Water Interval (in hours)
Max Tide12.30Highest Observed Tide
Max Tide Date & Time11/30/1951 20:36Highest Observed Tide Date & Time
Min Tide-3.94Lowest Observed Tide
Min Tide Date & Time11/26/2007 03:42Lowest Observed Tide Date & Time
HAT10.59Highest Astronomical Tide
HAT Date & Time12/31/1986 19:54HAT Date and Time
LAT-3.15Lowest Astronomical Tide
LAT Date & Time06/23/1986 15:54LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




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