551_San Francisco, CA_United States of America (the)
DatumValueDescription
Status14-Nov-2022Processing Date
Epoch01-Jan-1983 to 31-Dec-2001Tidal Datum Analysis Period
MHHW11.79Mean Higher-High Water (ft)
MHW11.18Mean High Water (ft)
MTL9.16Mean Tide Level (ft)
MSL9.10Mean Sea Level (ft)
DTL8.90Mean Diurnal Tide Level (ft)
MLW7.14Mean Low Water (ft)
MLLW6.01Mean Lower-Low Water (ft)
STND0.00Station Datum (ft)
GT5.78Great Diurnal Range (ft)
MN4.04Mean Range of Tide (ft)
DHQ0.61Mean Diurnal High Water Inequality (ft)
DLQ1.13Mean Diurnal Low Water Inequality (ft)
HWIUnavailableGreenwich High Water Interval (in hours)
LWIUnavailableGreenwich Low Water Interval (in hours)
Maximum14.80Highest Observed Water Level (ft)
Max Date & Time27-Jan-1983 18Highest Observed Water Level Date and Hour (LST)
Minimum3.10Lowest Observed Water Level (ft)
Min Date & Time27-Dec-1932 01Lowest Observed Water Level Date and Hour (LST)
HAT13.28Highest Astronomical Tide (ft)
HAT Date & Time31-Dec-1990 18HAT Date and Hour (LST)
LAT3.99Lowest Astronomical Tide (ft)
LAT Date & Time25-May-1990 13LAT Date and Hour (LST)
LEVUnavailableSwitch 1 (ft)
LEVBUnavailableSwitch 2 (ft)