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Datums for 9418637, Cockrobin Island Bridge


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9418637, Cockrobin Island Bridge
Status: Accepted (Feb 16 2018)
Units: Feet
Control Station: 9418767 North Spit, CA
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW6.22Mean Higher-High Water
MHW5.53Mean High Water
MTL3.33Mean Tide Level
MSL3.37Mean Sea Level
DTL3.11Mean Diurnal Tide Level
MLW1.14Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-20.01Station Datum
GT6.22Great Diurnal Range
MN4.40Mean Range of Tide
DHQ0.69Mean Diurnal High Water Inequality
DLQ1.13Mean Diurnal Low Water Inequality
HWI7.62Greenwich High Water Interval (in hours)
LWI1.50Greenwich 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
HAT8.38Highest Astronomical Tide
HAT Date & Time12/30/1990 17:24HAT Date and Time
LAT-1.65Lowest Astronomical Tide
LAT Date & Time06/23/1986 15:12LAT Date and Time
Tidal Datum Analysis Periods
05/01/2017 - 09/30/2017




Products available at 9418637 Cockrobin Island Bridge,

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services