Notice: Data collected are from NC Department of Public Safety, Division of Emergency Management 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 real time data at this station, visit NCDPS Flood Inundation Mapping and Alert Network at https://fiman.nc.gov/.

Datums for 8654769, Ocracoke, Pamlico Sound

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8654769, Ocracoke, Pamlico Sound
Status: Accepted (Nov 17 2022)
Units: Feet
Control Station: 8654467 USCG Station Hatteras, NC
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.03Mean Higher-High Water
MHW0.88Mean High Water
MTL0.48Mean Tide Level
MSL0.46Mean Sea Level
DTL0.51Mean Diurnal Tide Level
MLW0.08Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND0.60Station Datum
GT1.03Great Diurnal Range
MN0.81Mean Range of Tide
DHQ0.15Mean Diurnal High Water Inequality
DLQ0.08Mean Diurnal Low Water Inequality
HWI12.28Greenwich High Water Interval (in hours)
LWI6.72Greenwich 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
HAT1.70Highest Astronomical Tide
HAT Date & Time10/09/2025 13:54HAT Date and Time
LAT-0.46Lowest Astronomical Tide
LAT Date & Time02/01/2011 05:42LAT Date and Time
Tidal Datum Analysis Periods
06/01/2022 - 09/30/2022


Products available at 8654769 Ocracoke, Pamlico Sound,
  • Meteorological/Other
  • Meteorological Observations
  • Water Temp/Conductivity
  • PORTS®
  • This station is not a member of PORTS®