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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: Accepted (Sep 27 2012)
Units: Feet
T.M.: 120
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW8.61Mean Higher-High Water
MHW8.00Mean High Water
MTL4.63Mean Tide Level
MSL4.68Mean Sea Level
DTL4.31Mean Diurnal Tide Level
MLW1.26Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-12.00Station Datum
GT8.61Great Diurnal Range
MN6.74Mean Range of Tide
DHQ0.62Mean Diurnal High Water Inequality
DLQ1.26Mean Diurnal Low Water Inequality
HWI8.33Greenwich High Water Interval (in hours)
LWI2.09Greenwich 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
HAT10.17Highest Astronomical Tide
HAT Date & Time01/19/1988 20:06HAT Date and Time
LAT-2.13Lowest Astronomical Tide
LAT Date & Time06/13/1991 15:36LAT Date and Time
Tidal Datum Analysis Periods
02/01/2011 - 02/28/2011
04/01/2011 - 07/31/2011




Products available at 9414509 Dumbarton Bridge, CA

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services