Datums for 8459338, Block Island RI


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8459338, Block Island, RI
Status: Accepted (Aug 2 2004)
Units: Feet
Control Station: 8452660 Newport, RI
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.22Mean Higher-High Water
MHW2.97Mean High Water
MTL1.54Mean Tide Level
MSL1.46Mean Sea Level
DTL1.61Mean Diurnal Tide Level
MLW0.11Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-1.02Station Datum
GT3.22Great Diurnal Range
MN2.85Mean Range of Tide
DHQ0.25Mean Diurnal High Water Inequality
DLQ0.12Mean Diurnal Low Water Inequality
HWI0.05Greenwich High Water Interval (in hours)
LWI6.16Greenwich Low Water Interval (in hours)
Max Tide5.16Highest Observed Tide
Max Tide Date & Time10/22/1988 04:18Highest Observed Tide Date & Time
Min Tide-2.18Lowest Observed Tide
Min Tide Date & Time02/09/1989 15:30Lowest 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
04/01/1988 - 03/31/1989




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