Datums for 9414509, Dumbarton Bridge CA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9414509, Dumbarton Bridge, CA
Status: Superseded (Apr 17 2003) (Accepted Oct 23 2000)
Units: Feet
Control Station: 9414750 Alameda, CA
T.M.: 120
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW8.37Mean Higher-High Water
MHW7.76Mean High Water
MTL4.47Mean Tide Level
MSL4.52Mean Sea Level
DTL4.18Mean Diurnal Tide Level
MLW1.18Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-12.01Station Datum
GT8.37Great Diurnal Range
MN6.57Mean Range of Tide
DHQ0.61Mean Diurnal High Water Inequality
DLQ1.18Mean Diurnal Low Water Inequality
HWI8.46Greenwich High Water Interval (in hours)
LWI2.17Greenwich 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
HAT10.03Highest Astronomical Tide
HAT Date & Time01/22/2023 20:30HAT Date and Time
LAT-2.33Lowest Astronomical Tide
LAT Date & Time06/04/2008 15:18LAT Date and Time
Tidal Datum Analysis Periods
04/01/1996 - 07/31/1997




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