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Datums for 9450305, BOCA DE QUADRA AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9450305, BOCA DE QUADRA, AK
Status: Accepted (Jul 8 2004)
Units: Feet
Control Station: 9450460 Ketchikan, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW15.14Mean Higher-High Water
MHW14.26Mean High Water
MTL7.90Mean Tide Level
MSL7.90Mean Sea Level
DTL7.57Mean Diurnal Tide Level
MLW1.54Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-13.51Station Datum
GT15.13Great Diurnal Range
MN12.72Mean Range of Tide
DHQ0.88Mean Diurnal High Water Inequality
DLQ1.53Mean Diurnal Low Water Inequality
HWI9.41Greenwich High Water Interval (in hours)
LWI3.13Greenwich 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
10/01/1982 - 10/31/1982




Products available at 9450305 BOCA DE QUADRA, AK

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services