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Current Datum Value: 5.12

Datums for 8638491, Chester, James River VA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8638491, Chester, James River, VA
Status: Accepted (Jan 17 2013)
Units: Feet
Control Station: 8638610 Sewells Point, VA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.25Mean Higher-High Water
MHW3.00Mean High Water
MTL1.56Mean Tide Level
MSL1.64Mean Sea Level
DTL1.62Mean Diurnal Tide Level
MLW0.12Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-5.12Station Datum
GT3.25Great Diurnal Range
MN2.88Mean Range of Tide
DHQ0.25Mean Diurnal High Water Inequality
DLQ0.12Mean Diurnal Low Water Inequality
HWI8.64Greenwich High Water Interval (in hours)
LWI3.33Greenwich 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
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
02/01/2012 - 04/30/2012




Products available at 8638491 Chester, James River, VA

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