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

Datums for 9454671, POINT HELEN, KNIGHT ISLAND AK


Elevations on Station Datum

Station: 9454671, POINT HELEN, KNIGHT ISLAND, AK
Status: Accepted (Jun 2 2011)
Units: Feet
T.M.: 135
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW10.75Mean Higher-High Water
MHW9.82Mean High Water
MTL5.22Mean Tide Level
MSL5.32Mean Sea Level
DTL4.93Mean Diurnal Tide Level
MLW0.61Mean Low Water
MLLW-0.89Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT11.63Great Diurnal Range
MN9.21Mean Range of Tide
DHQ0.93Mean Diurnal High Water Inequality
DLQ1.50Mean Diurnal Low Water Inequality
HWI10.01Greenwich High Water Interval (in hours)
LWI3.69Greenwich 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
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
09/04/1996 - 10/21/1996




Products available at 9454671 POINT HELEN, KNIGHT ISLAND, AK

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