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Datums for 9451409, MOUNTAIN POINT AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9451409, MOUNTAIN POINT, AK
Status: Accepted (Jul 9 2004)
Units: Feet
Control Station: 9450460 Ketchikan, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW16.50Mean Higher-High Water
MHW15.54Mean High Water
MTL8.51Mean Tide Level
MSL8.51Mean Sea Level
DTL8.25Mean Diurnal Tide Level
MLW1.48Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-1.60Station Datum
GT16.50Great Diurnal Range
MN14.06Mean Range of Tide
DHQ0.96Mean Diurnal High Water Inequality
DLQ1.47Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich 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
10/01/1978 - 10/31/1978
To refer water level heights to NAVD88 (North American Vertical Datum of 1988), apply the values located at National Geodetic Survey.




Products available at 9451409 MOUNTAIN POINT, AK

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