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Current Datum Value: 20.12

Datums for 8637712, Jamestown Wharf 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=02042770.
NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8637712, Jamestown Wharf, VA
Status: Accepted (Dec 23 2010)
Units: Feet
Control Station: 8638610 Sewells Point, VA
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.15Mean Higher-High Water
MHW1.98Mean High Water
MTL1.07Mean Tide Level
MSL1.08Mean Sea Level
DTL1.07Mean Diurnal Tide Level
MLW0.16Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-20.12Station Datum
GT2.15Great Diurnal Range
MN1.81Mean Range of Tide
DHQ0.17Mean Diurnal High Water Inequality
DLQ0.17Mean Diurnal Low Water Inequality
HWI4.53Greenwich High Water Interval (in hours)
LWI11.08Greenwich 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
HAT2.87Highest Astronomical Tide
HAT Date & Time10/16/1989 17:42HAT Date and Time
LAT-0.50Lowest Astronomical Tide
LAT Date & Time01/20/1996 10:18LAT Date and Time
Tidal Datum Analysis Periods
08/01/2010 - 09/30/2010




Products available at 8637712 Jamestown Wharf, VA

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services