Datums for 8559957, Little Assawoman Bay

NOTICE: Data collected from 2017 and beyond are from United States Geological Survey (USGS) water level stations that are subject to NOAA's National Ocean Service (NOS) routine quality assurance procedures on a monthly basis with data available for the previous month. For access to the real-time data at this location visit USGS at: https://nwis.waterdata.usgs.gov/nwis/uv?site_no=01484701.
NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8559957, Little Assawoman Bay
Status: Accepted (Aug 9 2023)
Units: Feet
Control Station: 8570283 Ocean City Inlet, MD
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.07Mean Higher-High Water
MHW0.94Mean High Water
MTL0.53Mean Tide Level
MSL0.56Mean Sea Level
DTL0.53Mean Diurnal Tide Level
MLW0.13Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND0.86Station Datum
GT1.07Great Diurnal Range
MN0.81Mean Range of Tide
DHQ0.13Mean Diurnal High Water Inequality
DLQ0.13Mean Diurnal Low Water Inequality
HWI3.64Greenwich High Water Interval (in hours)
LWI9.98Greenwich Low Water Interval (in hours)
Max TideHighest Observed Tide
Max Tide Date & Time Highest Observed Tide Date & Time
Min TideLowest Observed Tide
Min Tide Date & Time Lowest Observed Tide Date & Time
HAT1.44Highest Astronomical Tide
HAT Date & Time10/09/2010 17:12HAT Date and Time
LAT-0.43Lowest Astronomical Tide
LAT Date & Time01/29/2021 10:12LAT Date and Time
Tidal Datum Analysis Periods
05/01/2022 - 03/31/2023


Products available at 8559957 Little Assawoman Bay,
  • Meteorological/Other
  • Meteorological Observations
  • Water Temp/Conductivity
  • PORTS®
  • This station is not a member of PORTS®