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

Current Datum Value: 3.61

Datums for 8440273, SALISBURY POINT, MERRIMACK RIVER MA


NOTICE: All data values are relative to the MLLW.

Elevations on Mean Lower Low Water

Station: 8440273, SALISBURY POINT, MERRIMACK RIVER, MA
Status: Accepted (Aug 27 2003)
Units: Feet
Control Station: 8440466 NEWBURYPORT, MERRIMACK RIVER, MA
T.M.: 75
Epoch: 1983-2001
Datum: MLLW
DatumValueDescription
MHHW8.28Mean Higher-High Water
MHW7.83Mean High Water
MTL4.01Mean Tide Level
MSL4.02Mean Sea Level
DTL4.14Mean Diurnal Tide Level
MLW0.19Mean Low Water
MLLW0.00Mean Lower-Low Water
NAVD88
STND-3.61Station Datum
GT8.28Great Diurnal Range
MN7.64Mean Range of Tide
DHQ0.45Mean Diurnal High Water Inequality
DLQ0.19Mean Diurnal Low Water Inequality
HWI4.50Greenwich High Water Interval (in hours)
LWI11.06Greenwich 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
HATHighest Astronomical Tide
HAT Date & Time HAT Date and Time
LATLowest Astronomical Tide
LAT Date & Time LAT Date and Time
Tidal Datum Analysis Periods
07/01/1989 - 09/30/1989




Products available at 8440273 SALISBURY POINT, MERRIMACK RIVER, MA

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