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 (Aug 4 2021)
Units: Feet
Control Station: 8741533 Pascagoula NOAA Lab, MS
T.M.: 0
Epoch: 1983-2001
Datum: MLLW
MHHW1.79Mean Higher-High Water
MHW1.66Mean High Water
MTL0.90Mean Tide Level
MSL0.90Mean Sea Level
DTL0.90Mean Diurnal Tide Level
MLW0.14Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD880.81North American Vertical Datum of 1988
STND-2.36Station Datum
GT1.79Great Diurnal Range
MN1.51Mean Range of Tide
DHQ0.14Mean Diurnal High Water Inequality
DLQ0.15Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide10.88Highest Observed Tide
Max Tide Date & Time09/01/2008 20:12Highest Observed Tide Date & Time
Min Tide-3.94Lowest Observed Tide
Min Tide Date & Time09/02/1985 11:36Lowest Observed Tide Date & Time
HAT2.69Highest Astronomical Tide
HAT Date & Time10/11/2025 07:00HAT Date and Time
LAT-1.32Lowest Astronomical Tide
LAT Date & Time01/10/2005 15:24LAT Date and Time
Tidal Datum Analysis Periods
07/01/2007 - 06/30/2011
08/01/2011 - 07/31/2012
10/01/2013 - 09/30/2015
02/01/2016 - 01/31/2018

Products available at 8747437 Bay Waveland Yacht Club, MS