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Datums for 8638450, Tettington, James River VA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8638450, Tettington, James River, VA
Status: Accepted (Jan 6 2011)
Units: Feet
Control Station: 8638610 Sewells Point, VA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.21Mean Higher-High Water
MHW2.01Mean High Water
MTL1.07Mean Tide Level
MSL1.13Mean Sea Level
DTL1.10Mean Diurnal Tide Level
MLW0.14Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-19.02Station Datum
GT2.20Great Diurnal Range
MN1.87Mean Range of Tide
DHQ0.20Mean Diurnal High Water Inequality
DLQ0.14Mean Diurnal Low Water Inequality
HWI5.43Greenwich High Water Interval (in hours)
LWI12.13Greenwich Low Water Interval (in hours)
Max Tide6.88Highest Observed Tide
Max Tide Date & Time11/13/2009 02:18Highest Observed Tide Date & Time
Min Tide-1.49Lowest Observed Tide
Min Tide Date & Time01/01/2009 02:30Lowest Observed Tide Date & Time
HAT2.67Highest Astronomical Tide
HAT Date & Time10/16/1993 17:54HAT Date and Time
LAT-0.42Lowest Astronomical Tide
LAT Date & Time01/21/1996 12:24LAT Date and Time
Tidal Datum Analysis Periods
08/01/2008 - 07/31/2010




Products available at 8638450 Tettington, James River, VA

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