U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8516061 PUBLICATION DATE: 05/23/2003
Name: COLD SPRINGS HARBOR
NY
NOAA Chart: 12365 Latitude: 40° 52.4' N ( 40.87330)
USGS Quad: HUNTINGTON Longitude: 73° 28.2' W ( -73.47000)
To reach the tidal bench marks from exit 40 North on Long Island Expressway,
proceed north on Walt Whitman Road (State Highway 110) for 8.9 km (5.5 mi) to
Route 25A in Huntington. Turn left onto Route 25A and go 3 km (2 mi) to Shore
Road in the village of Cold Spring Harbor, turn right onto Shore Road and go 1.2
km (0.8 mi) to the Mobil Oil Co. fuel loading terminal on the west side of the
road. The bench marks are on the terminal property and outside the property
heading south along Shore Road. The tide gauge and staff were on the offshore
end of the pier at the terminal.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 6061 A 1990
DESIGNATION: 851 5061 A
MONUMENTATION: Tidal Station disk VM#: 7083
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete foundation OPUS PID:
LATITUDE: 40° 52.4' N ( 40.87330) LONGITUDE: 73° 28.2' W ( -73.47000)
The primary bench mark is a disk set in the concrete base of a light pole on the
SW corner of the Mobile Oil Company storage terminal property between storage
tanks #1 and #2 and near the west boundary fence line, 5.36 m (17.6 ft) north of
the centerline of the terminal pier, 1 m (3 ft) east of the boundary fence, and
0.15 m (0.5 ft) west of the light pole.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 8516061 PUBLICATION DATE: 05/23/2003
Name: COLD SPRINGS HARBOR
NY
NOAA Chart: 12365 Latitude: 40° 52.4' N ( 40.87330)
USGS Quad: HUNTINGTON Longitude: 73° 28.2' W ( -73.47000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 6061 B 1990
DESIGNATION: 851 5061 B
MONUMENTATION: Tidal Station disk VM#: 7084
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete storm drain pad OPUS PID:
LATITUDE: 40° 52.4' N ( 40.87330) LONGITUDE: 73° 28.2' W ( -73.47000)
The bench mark is a disk set in the SE corner of a concrete storm drain pad on
the Mobile Oil Company fuel storage terminal property, at the vertical point of
the main supply line to the fuel loading rack, 1 m (2 ft) east of the centerline
of the pipeline, 0.15 m (0.5 ft) west of the east edge of the concrete pad, and
0.14 m (0.45 ft) north of the south edge of the concrete pad.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8516061 PUBLICATION DATE: 05/23/2003
Name: COLD SPRINGS HARBOR
NY
NOAA Chart: 12365 Latitude: 40° 52.4' N ( 40.87330)
USGS Quad: HUNTINGTON Longitude: 73° 28.2' W ( -73.47000)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING:
DESIGNATION: TIDAL 1 STA II 12
ALIAS: NO STAMPING 1
MONUMENTATION: Tidal Station disk VM#: 7085
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: KU0432
SETTING CLASSIFICATION: Concrete fence post OPUS PID:
LATITUDE: 40° 52.5' N ( 40.87500) LONGITUDE: 73° 28.1' W ( -73.46830)
The bench mark is a disk set vertically in the west face of a 1.07 m X 1.07 m X
1.22 m (3.5 ft x 3.5 ft x 4 ft) concrete fence post located on the east side of
Shore Road opposite the Mobil Oil Company terminal, at the SE end of a concrete
wall which is north of the driveway entrance to the estate of J. Reese at 84
Shore Road, 46 m (150 ft) SE of the driveway of the Mobil Oil Company terminal,
14 m (47 ft) north of utility pole #029E20 8041, 10 m (32 ft) south of the east
support of a village speed limit sign, 8 m (25 ft) NE of the centerline of Shore
Road, and 0.15 m (0.5 ft) above the ground. Note: The bench mark is also known
as 1 (1916).
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8516061 PUBLICATION DATE: 05/23/2003
Name: COLD SPRINGS HARBOR
NY
NOAA Chart: 12365 Latitude: 40° 52.4' N ( 40.87330)
USGS Quad: HUNTINGTON Longitude: 73° 28.2' W ( -73.47000)
T I D A L D A T U M S
Tidal datums at COLD SPRINGS HARBOR based on:
LENGTH OF SERIES: 3 MONTHS
TIME PERIOD: June 1990 - August 1990
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8518490 NEW ROCHELLE
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 2.402
MEAN HIGH WATER MHW = 2.291
MEAN SEA LEVEL MSL = 1.182
MEAN TIDE LEVEL MTL = 1.180
MEAN LOW WATER MLW = 0.068
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
6061 A 1990 4.318 2.027
6061 B 1990 3.502 1.212
TIDAL 1 STA II 12 3.665 1.374
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8516061 PUBLICATION DATE: 05/23/2003
Name: COLD SPRINGS HARBOR
NY
NOAA Chart: 12365 Latitude: 40° 52.4' N ( 40.87330)
USGS Quad: HUNTINGTON Longitude: 73° 28.2' W ( -73.47000)
D E F I N I T I O N S
Mean Sea Level (MSL) is a tidal datum determined over a 19-year National Tidal
Datum Epoch. It pertains to local mean sea level and should not be confused
with the fixed datums of North American Vertical Datum of 1988 (NAVD88).
NAVD88 is a fixed datum derived from a simultaneous, least squares, minimum
constraint adjustment of Canadian/Mexican/United States leveling observations.
Local mean sea level observed at Father Point/Rimouski, Canada was held fixed as
the single initial constraint. NAVD88 replaces NGVD29 as the national
standard geodetic reference for heights. Bench mark elevations relative to
NAVD88 are available from NGS through the World Wide Web at
National Geodetic Survey.
NGVD29 is a fixed datum adopted as a national standard geodetic reference for
heights but is now considered superseded. NGVD29 is sometimes referred to as
Sea Level Datum of 1929 or as Mean Sea Level on some early issues of Geological
Survey Topographic Quads. NGVD29 was originally derived from a general
adjustment of the first-order leveling networks of the U.S. and Canada after
holding mean sea level observed at 26 long term tide stations as fixed.
Numerous local and wide-spread adjustments have been made since establishment in
1929. Bench mark elevations relative to NGVD29 are available from the National
Geodetic Survey (NGS) data base via the World Wide Web at
National Geodetic Survey.
NAVD88 and NGVD29 are fixed geodetic datums whose elevation relationships to
local MSL and other tidal datums may not be consistent from one location to
another.
The Vertical Mark Number (VM#) and PID# shown on the bench mark sheet are unique
identifiers for bench marks in the tidal and geodetic databases, respectively.
Each bench mark in either database has a single, unique VM# and/or PID# assigned.
Where both VM# and PID# are indicated, both tidal and geodetic elevations are
available for the bench mark listed. The NGS's Integrated Data Base (IDB PID)
provides geodetic datum based on traditionally leveled and bluebooked ties to
the National Spatial Reference System(NSRS) https://www.ngs.noaa.gov/datasheets/.
The NGS Online Positioning User Service (OPUS PID) provides geodetic datum based
on GPS position & tie it to the NSRS https://www.ngs.noaa.gov/OPUS/.
The NAVD88 elevation is shown on the Elevations of Tidal Datums Table Referred
to MLLW only when two or more of the bench marks listed have NAVD88 elevations.
The NAVD88 elevation relationship shown in the table is derived from an average
of several bench mark elevations relative to tide station datum. As a result of
this averaging, NAVD88 bench mark elevations computed indirectly from the tidal
datums elevation table may differ slightly from NAVD88 elevations listed for
each bench mark in the NGS database.