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Datums for 9457407, Nachalni Island AK


Elevations on Station Datum

Station: 9457407, Nachalni Island, AK
Status: Accepted (Sep 5 2014)
Units: Feet
T.M.: 135
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW11.21Mean Higher-High Water
MHW10.36Mean High Water
MTL4.84Mean Tide Level
MSL4.81Mean Sea Level
DTL4.37Mean Diurnal Tide Level
MLW-0.69Mean Low Water
MLLW-2.46Mean Lower-Low Water
NAVD88
STND0.00Station 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)
MaximumHighest Observed Water Level
Max Date & Time Highest Observed Water Level Date and Time
MinimumLowest Observed Water Level
Min Date & Time Lowest Observed Water Level Date and Time
HAT15.03Highest Astronomical Tide
HAT Date & Time11/13/1985 23:24HAT Date and Time
LAT-6.67Lowest 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