Datums for 9449639, Point Roberts


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9449639, Point Roberts
Status: Accepted (Feb 22 2016)
Units: Feet
Control Station: 9449424 Cherry Point, WA
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW9.79Mean Higher-High Water
MHW8.92Mean High Water
MTL5.82Mean Tide Level
MSL5.64Mean Sea Level
DTL4.89Mean Diurnal Tide Level
MLW2.71Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-16.48Station Datum
GT9.79Great Diurnal Range
MN6.21Mean Range of Tide
DHQ0.86Mean Diurnal High Water Inequality
DLQ2.71Mean Diurnal Low Water Inequality
HWI0.93Greenwich High Water Interval (in hours)
LWI7.22Greenwich 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
HAT11.89Highest Astronomical Tide
HAT Date & Time01/01/1987 15:36HAT Date and Time
LAT-4.31Lowest Astronomical Tide
LAT Date & Time06/22/1986 19:12LAT Date and Time
Tidal Datum Analysis Periods
08/01/2015 - 10/31/2015




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