Datums for 8545240, Philadelphia PA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8545240, Philadelphia, PA
Status: Superseded (Apr 17 2003) (Accepted Jun 27 2000)
Units: Feet
Control Station: 8557380 Lewes, DE
T.M.: 0
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW6.71Mean Higher-High Water
MHW6.29Mean High Water
MTL3.24Mean Tide Level
MSL3.49Mean Sea Level
DTL3.35Mean Diurnal Tide Level
MLW0.20Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-3.57Station Datum
GT6.72Great Diurnal Range
MN6.09Mean Range of Tide
DHQ0.42Mean Diurnal High Water Inequality
DLQ0.20Mean Diurnal Low Water Inequality
HWI6.30Greenwich High Water Interval (in hours)
LWI0.94Greenwich Low Water Interval (in hours)
Max Tide10.88Highest Observed Tide
Max Tide Date & Time10/30/2012 08:00Highest Observed Tide Date & Time
Min Tide-6.57Lowest Observed Tide
Min Tide Date & Time12/31/1962 23:48Lowest Observed Tide Date & Time
HAT7.64Highest Astronomical Tide
HAT Date & Time05/18/2034 06:00HAT Date and Time
LAT-0.67Lowest Astronomical Tide
LAT Date & Time02/01/2014 14:00LAT Date and Time
Tidal Datum Analysis Periods
01/01/1995 - 12/31/1996
02/01/1997 - 12/31/1998




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