Datums for 8537121, Ship John Shoal NJ


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8537121, Ship John Shoal, NJ
Status: Accepted (Jun 9 2020)
Units: Feet
Control Station: 8551910 Reedy Point, DE
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW6.25Mean Higher-High Water
MHW5.83Mean High Water
MTL3.00Mean Tide Level
MSL3.07Mean Sea Level
DTL3.13Mean Diurnal Tide Level
MLW0.18Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-18.38Station Datum
GT6.24Great Diurnal Range
MN5.65Mean Range of Tide
DHQ0.42Mean Diurnal High Water Inequality
DLQ0.18Mean Diurnal Low Water Inequality
HWI2.43Greenwich High Water Interval (in hours)
LWI9.06Greenwich Low Water Interval (in hours)
Max Tide9.45Highest Observed Tide
Max Tide Date & Time12/21/2012 09:30Highest Observed Tide Date & Time
Min Tide-3.08Lowest Observed Tide
Min Tide Date & Time01/04/2010 00:00Lowest Observed Tide Date & Time
HAT7.82Highest Astronomical Tide
HAT Date & Time05/26/1994 03:06HAT Date and Time
LAT-1.33Lowest Astronomical Tide
LAT Date & Time01/21/1996 22:06LAT Date and Time
Tidal Datum Analysis Periods
05/01/2003 - 04/30/2008
12/01/2009 - 11/30/2017




Products available at 8537121 Ship John Shoal, NJ