Datums for 8557380, Lewes DE


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8557380, Lewes, DE
Status: Superseded (Apr 17 2003) (Accepted Mar 24 1998)
Units: Feet
Control Station:
T.M.: 0
Epoch: 1960-1978
Datum: MLLW
DatumValueDescription
MHHW4.73Mean Higher-High Water
MHW4.31Mean High Water
MTL2.24Mean Tide Level
MSL2.27Mean Sea Level
DTL2.37Mean Diurnal Tide Level
MLW0.16Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-2.51Station Datum
GT4.73Great Diurnal Range
MN4.15Mean Range of Tide
DHQ0.42Mean Diurnal High Water Inequality
DLQ0.16Mean Diurnal Low Water Inequality
HWI1.12Greenwich High Water Interval (in hours)
LWI7.13Greenwich Low Water Interval (in hours)
Max Tide9.53Highest Observed Tide
Max Tide Date & Time01/23/2016 13:24Highest Observed Tide Date & Time
Min Tide-3.94Lowest Observed Tide
Min Tide Date & Time01/10/1978 16:00Lowest Observed Tide Date & Time
HAT5.88Highest Astronomical Tide
HAT Date & Time10/28/2011 14:12HAT Date and Time
LAT-1.15Lowest Astronomical Tide
LAT Date & Time02/12/2032 07:48LAT Date and Time
Tidal Datum Analysis Periods
01/01/1960 - 12/31/1978




Products available at 8557380 Lewes, DE