NOAA Web Site Link Tides and Currents Home Page Transparent placeholder image

Datums for 9451805, Scraggy Island AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9451805, Scraggy Island, AK
Status: Accepted (Mar 24 2005)
Units: Feet
Control Station: 9451600 Sitka, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW9.97Mean Higher-High Water
MHW9.12Mean High Water
MTL5.31Mean Tide Level
MSL5.28Mean Sea Level
DTL4.98Mean Diurnal Tide Level
MLW1.50Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND0.12Station Datum
GT9.97Great Diurnal Range
MN7.62Mean Range of Tide
DHQ0.85Mean Diurnal High Water Inequality
DLQ1.50Mean Diurnal Low Water Inequality
HWI9.52Greenwich High Water Interval (in hours)
LWI3.24Greenwich 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
05/01/2004 - 05/31/2004




Products available at 9451805 Scraggy Island, AK

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services