Notice: In July, 2021, CO-OPS corrected the data at this location dating back to 2005 to address observed shifts in the local terrestrial reference frame. A series of data correctors were applied to ensure that all data at this location is referenced to the same zero reference plane from when the station was originally installed. The water level observations have been corrected by between 1 to 2.5 cm depending on the date Please submit any questions to

Datums for 8747437, Bay Waveland Yacht Club MS

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8747437, Bay Waveland Yacht Club, MS
Status: Accepted (May 22 2017)
Units: Meters
Control Station: 8729840 Pensacola, FL
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
MHHW0.539Mean Higher-High Water
MHW0.499Mean High Water
MTL0.271Mean Tide Level
MSL0.272Mean Sea Level
DTL0.269Mean Diurnal Tide Level
MLW0.042Mean Low Water
MLLW0.000Mean Lower-Low Water
NAVD880.213North American Vertical Datum of 1988
STND-0.736Station Datum
GT0.538Great Diurnal Range
MN0.457Mean Range of Tide
DHQ0.039Mean Diurnal High Water Inequality
DLQ0.042Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide3.312Highest Observed Tide
Max Tide Date & Time09/01/2008 16:12Highest Observed Tide Date & Time
Min Tide-1.218Lowest Observed Tide
Min Tide Date & Time09/02/1985 13:36Lowest Observed Tide Date & Time
HAT0.808Highest Astronomical Tide
HAT Date & Time10/18/1989 06:24HAT Date and Time
LAT-0.403Lowest Astronomical Tide
LAT Date & Time01/18/1988 14:48LAT Date and Time
Tidal Datum Analysis Periods
07/01/2006 - 06/30/2011
01/01/2014 - 12/31/2015

Products available at 8747437 Bay Waveland Yacht Club, MS