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

Parts of the U.S. Government are closed. However, because the information this site provides is necessary to protect life and property, it will be updated and maintained during the Federal Government shutdown. For critical weather information, please visit To learn more, see

Datums for 9466931, Dall Point AK

NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9466931, Dall Point, AK
Status: Accepted (Oct 14 2011)
Units: Feet
Control Station:
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
MHHW4.45Mean Higher-High Water
MHW3.75Mean High Water
MTL2.05Mean Tide Level
MSL1.84Mean Sea Level
DTL2.23Mean Diurnal Tide Level
MLW0.37Mean Low Water
MLLW0.00Mean Lower-Low Water
STND-41.74Station Datum
GT4.45Great Diurnal Range
MN3.38Mean Range of Tide
DHQ0.70Mean Diurnal High Water Inequality
DLQ0.37Mean Diurnal Low Water Inequality
HWI9.66Greenwich High Water Interval (in hours)
LWI4.89Greenwich 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
HAT5.59Highest Astronomical Tide
HAT Date & Time11/15/1985 23:48HAT Date and Time
LAT-1.73Lowest Astronomical Tide
LAT Date & Time11/16/1985 06:54LAT Date and Time
Tidal Datum Analysis Periods
07/01/2007 - 08/31/2007

Products available at 9466931 Dall Point, AK

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services