Notice: Significant changes in the tidal range at this location are due to interactions with the shoals and sandbars at the entrance to the Unalakleet River. The water level data and datums are only representative of the oceanographic conditions upstream of the entrance.

Datums for 9468333, Unalakleet AK


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 9468333, Unalakleet, AK
Status: Accepted (May 17 2021)
Units: Feet
Control Station: 9468756 Nome, Norton Sound, AK
T.M.: 135
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW3.45Mean Higher-High Water
MHW3.05Mean High Water
MTL1.67Mean Tide Level
MSL1.55Mean Sea Level
DTL1.72Mean Diurnal Tide Level
MLW0.28Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88-2.32North American Vertical Datum of 1988
STND-1.76Station Datum
GT3.45Great Diurnal Range
MN2.77Mean Range of Tide
DHQ0.39Mean Diurnal High Water Inequality
DLQ0.28Mean Diurnal Low Water Inequality
HWIGreenwich High Water Interval (in hours)
LWIGreenwich Low Water Interval (in hours)
Max Tide11.64Highest Observed Tide
Max Tide Date & Time08/03/2019 20:30Highest Observed Tide Date & Time
Min Tide-1.65Lowest Observed Tide
Min Tide Date & Time11/11/2016 03:36Lowest 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
07/01/2011 - 08/31/2011
08/01/2016 - 01/31/2017
06/01/2017 - 07/31/2017
10/01/2017 - 10/31/2017
12/01/2017 - 12/31/2017
07/01/2018 - 10/31/2018
12/01/2018 - 12/31/2018
07/01/2019 - 08/31/2019




Products available at 9468333 Unalakleet, AK