Datums for 8740405, PETIT BOIS ISLAND, MISS. SOUND MS

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8740405, PETIT BOIS ISLAND, MISS. SOUND, MS
Status: Accepted (Jul 5 2012)
Units: Feet
Control Station: 8735180 Dauphin Island, AL
T.M.: 90
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW1.47Mean Higher-High Water
MHW1.41Mean High Water
MTL0.73Mean Tide Level
MSL0.71Mean Sea Level
DTL0.73Mean Diurnal Tide Level
MLW0.05Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-2.05Station Datum
GT1.47Great Diurnal Range
MN1.37Mean Range of Tide
DHQ0.06Mean Diurnal High Water Inequality
DLQ0.05Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich 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
HAT2.22Highest Astronomical Tide
HAT Date & Time12/06/2025 03:06HAT Date and Time
LAT-0.74Lowest Astronomical Tide
LAT Date & Time12/05/2025 13:12LAT Date and Time
Tidal Datum Analysis Periods
04/01/1980 - 10/31/1980


Products available at 8740405 PETIT BOIS ISLAND, MISS. SOUND, MS
  • Meteorological/Other
  • Meteorological Observations
  • Water Temp/Conductivity
  • PORTS®
  • This station is not a member of PORTS®