Datums for 9450460, Ketchikan AK

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9450460, Ketchikan, AK
Status: Accepted (Sep 26 2011)
Units: Feet
Control Station:
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
MHHW15.45Mean Higher-High Water
MHW14.55Mean High Water
MTL8.06Mean Tide Level
MSL8.07Mean Sea Level
DTL7.72Mean Diurnal Tide Level
MLW1.57Mean Low Water
MLLW0.00Mean Lower-Low Water
STND-6.19Station Datum
GT15.45Great Diurnal Range
MN12.97Mean Range of Tide
DHQ0.91Mean Diurnal High Water Inequality
DLQ1.57Mean Diurnal Low Water Inequality
HWI9.41Greenwich High Water Interval (in hours)
LWI3.10Greenwich Low Water Interval (in hours)
Max Tide21.31Highest Observed Tide
Max Tide Date & Time12/02/1967 22:24Highest Observed Tide Date & Time
Min Tide-5.27Lowest Observed Tide
Min Tide Date & Time12/14/2008 04:18Lowest Observed Tide Date & Time
HAT19.75Highest Astronomical Tide
HAT Date & Time11/27/2038 21:36HAT Date and Time
LAT-4.58Lowest Astronomical Tide
LAT Date & Time07/14/2018 16:24LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 12/31/2001

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