Datums for 8630315, Southern Chincoteague Island VA

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=01484746.
NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8630315, Southern Chincoteague Island, VA
Status: Accepted (Oct 16 2020)
Units: Feet
Control Station: 8631044 Wachapreague, VA
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.21Mean Higher-High Water
MHW2.99Mean High Water
MTL1.56Mean Tide Level
MSL1.63Mean Sea Level
DTL1.60Mean Diurnal Tide Level
MLW0.14Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND2.29Station Datum
GT3.22Great Diurnal Range
MN2.85Mean Range of Tide
DHQ0.22Mean Diurnal High Water Inequality
DLQ0.14Mean Diurnal Low Water Inequality
HWI0.48Greenwich High Water Interval (in hours)
LWI6.63Greenwich Low Water Interval (in hours)
Max Tide5.87Highest Observed Tide
Max Tide Date & Time01/03/2022 18:18Highest Observed Tide Date & Time
Min Tide-1.33Lowest Observed Tide
Min Tide Date & Time03/03/2021 14:54Lowest Observed Tide Date & Time
HAT4.16Highest Astronomical Tide
HAT Date & Time10/09/2029 13:24HAT Date and Time
LAT-0.89Lowest Astronomical Tide
LAT Date & Time02/01/2014 07:24LAT Date and Time
Tidal Datum Analysis Periods
04/01/2019 - 10/31/2019


Products available at 8630315 Southern Chincoteague Island, VA
  • Meteorological/Other
  • Meteorological Observations
  • Water Temp/Conductivity
  • PORTS®
  • This station is not a member of PORTS®