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

Datums for 9454561, Perch Point AK


Elevations on Station Datum

Station: 9454561, Perch Point, AK
Status: Accepted (Jun 19 2003)
Units: Feet
T.M.: 135
Epoch: 1983-2001
Datum: STND
DatumValueDescription
MHHW8.09Mean Higher-High Water
MHW7.10Mean High Water
MTL2.45Mean Tide Level
MSL2.53Mean Sea Level
DTL2.23Mean Diurnal Tide Level
MLW-2.20Mean Low Water
MLLW-3.63Mean Lower-Low Water
NAVD88
STND0.00Station Datum
GT11.72Great Diurnal Range
MN9.30Mean Range of Tide
DHQ0.98Mean Diurnal High Water Inequality
DLQ1.42Mean Diurnal Low Water Inequality
HWI9.94Greenwich High Water Interval (in hours)
LWI3.66Greenwich 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
09/13/2000 - 10/26/2000




Products available at 9454561 Perch Point, AK

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