Datums for 1619000, Johnston Atoll United States of America


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 1619000, Johnston Atoll, United States of America
Status: Accepted (Apr 17 2003)
Units: Feet
Control Station:
T.M.: 150
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW2.22Mean Higher-High Water
MHW1.97Mean High Water
MTL1.05Mean Tide Level
MSL1.05Mean Sea Level
DTL1.11Mean Diurnal Tide Level
MLW0.12Mean Low Water
MLLW0.00Mean Lower-Low Water
Ortho
STND-1.81Station Datum
GT2.21Great Diurnal Range
MN1.85Mean Range of Tide
DHQ0.24Mean Diurnal High Water Inequality
DLQ0.12Mean Diurnal Low Water Inequality
HWI3.50Greenwich High Water Interval (in hours)
LWI9.64Greenwich Low Water Interval (in hours)
Max Tide4.99Highest Observed Tide
Max Tide Date & Time01/13/1958 00:00Highest Observed Tide Date & Time
Min Tide-1.81Lowest Observed Tide
Min Tide Date & Time03/23/1951 00:00Lowest Observed Tide Date & Time
HAT3.10Highest Astronomical Tide
HAT Date & Time11/12/1985 15:18HAT Date and Time
LAT-0.72Lowest Astronomical Tide
LAT Date & Time03/17/1984 22:06LAT Date and Time
Tidal Datum Analysis Periods
01/01/1983 - 04/30/1999
08/01/2000 - 12/31/2001




Products available at 1619000 Johnston Atoll, United States of America