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Datums for 8557380, Lewes DE


Elevations on Station Datum

Station: 8557380, Lewes, DE
Status: Accepted (Sep 13 2017)
Units: Feet
T.M.: 0
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW7.43Mean Higher-High Water
MHW7.01Mean High Water
MTL4.98Mean Tide Level
MSL5.01Mean Sea Level
DTL5.11Mean Diurnal Tide Level
MLW2.94Mean Low Water
MLLW2.78Mean Lower-Low Water
NAVD885.41North American Vertical Datum of 1988
STND0.00Station Datum
GT4.65Great Diurnal Range
MN4.07Mean Range of Tide
DHQ0.42Mean Diurnal High Water Inequality
DLQ0.16Mean Diurnal Low Water Inequality
HWI1.13Greenwich High Water Interval (in hours)
LWI7.15Greenwich Low Water Interval (in hours)
Maximum12.04Highest Observed Water Level
Max Date & Time01/23/2016 13:24Highest Observed Water Level Date and Time
Minimum-1.43Lowest Observed Water Level
Min Date & Time01/10/1978 16:00Lowest Observed Water Level Date and Time
HAT8.60Highest Astronomical Tide
HAT Date & Time11/04/1994 13:36HAT Date and Time
LAT1.64Lowest Astronomical Tide
LAT Date & Time02/09/1997 08:18LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001




Products available at 8557380 Lewes, DE

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services