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Datums for 9457407, Nachalni Island AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9457407, Nachalni Island, AK
Status: Accepted (Sep 5 2014)
Units: Feet
Control Station: 9457804 Alitak, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW13.67Mean Higher-High Water
MHW12.82Mean High Water
MTL7.30Mean Tide Level
MSL7.27Mean Sea Level
DTL6.83Mean Diurnal Tide Level
MLW1.77Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND2.46Station Datum
GT13.67Great Diurnal Range
MN11.05Mean Range of Tide
DHQ0.84Mean Diurnal High Water Inequality
DLQ1.77Mean Diurnal Low Water Inequality
HWI11.34Greenwich High Water Interval (in hours)
LWI5.19Greenwich 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
HAT17.49Highest Astronomical Tide
HAT Date & Time11/13/1985 23:24HAT Date and Time
LAT-4.21Lowest Astronomical Tide
LAT Date & Time05/25/1990 18:00LAT Date and Time
Tidal Datum Analysis Periods
06/01/2014 - 06/30/2014




Products available at 9457407 Nachalni Island, AK

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