U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 8532591 PUBLICATION DATE: 04/29/2003
Name: MANASQUAN INLET
NJ
NOAA Chart: 12323 Latitude: 40° 6.1' N ( 40.10170)
USGS Quad: POINT PLEASANT Longitude: 74° 2.1' W ( -74.03500)
To reach the tidal bench marks from the intersection of New Jersey Highway 35
and Broadway in Point Pleasant, proceed 1.1 km (0.7 mi) east on Broadway to
Ocean Avenue, turn left and proceed north on Ocean Avenue to Inlet Drive (one
way loop), then proceed 0.3 km (0.2 mi) to the east side of Inlet Drive and the
U.S. Coast Guard base. The bench marks are located on the Coast Guard property
and along Inlet Drive and Ocean Avenue. The tide station was located on the
south side of the Coast Guard base in the SE end of the small boat basin.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: NO 4 1936
DESIGNATION: 853 2591 TIDAL 4
MONUMENTATION: Tidal Station disk VM#: 2595
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: KV0832
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 40° 6.1' N ( 40.10170) LONGITUDE: 74° 2.2' W ( -74.03670)
The primary bench mark is a disk set flush in the top of a concrete post
surrounded by the sidewalk on the west side of Ocean Drive, just south of the
intersection of Inlet Drive, 42 m (138 ft) south of the centerline of Inlet
Drive, 16 m (51 ft) north of power line pole No. 106, 4.57 m (15.0 ft) NE of the
SE corner of Gates Bait and Tackle shop, and 2.26 m (7.4 ft) west of the west
curb of Ocean Drive.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8532591 PUBLICATION DATE: 04/29/2003
Name: MANASQUAN INLET
NJ
NOAA Chart: 12323 Latitude: 40° 6.1' N ( 40.10170)
USGS Quad: POINT PLEASANT Longitude: 74° 2.1' W ( -74.03500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: NO 5 1936
DESIGNATION: 853 2591 TIDAL 5
MONUMENTATION: Tidal Station disk VM#: 2596
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: KV0836
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 40° 6.2' N ( 40.10330) LONGITUDE: 74° 2.2' W ( -74.03670)
The bench mark is a disk set in the top of a concrete post set flush with the
ground on the north side of the Coast Guard station, 27.43 m (90.0 ft) south of
the centerline of Inlet Drive, 12.62 m (41.4 ft) NW of the west leg of the Coast
Guard flag tower, 9 m (30 ft) SE of the west corner of the volleyball courts,
6.55 m (21.5 ft) NNW of the north corner of the Coast Guard station, and 0.30 m
(1.0 ft) east of a witness post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8532591 PUBLICATION DATE: 04/29/2003
Name: MANASQUAN INLET
NJ
NOAA Chart: 12323 Latitude: 40° 6.1' N ( 40.10170)
USGS Quad: POINT PLEASANT Longitude: 74° 2.1' W ( -74.03500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: MAN 1962
DESIGNATION: MAN
MONUMENTATION: Triangulation Station disk VM#: 2597
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: KV0835
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 40° 6.2' N ( 40.10330) LONGITUDE: 74° 2.3' W ( -74.03830)
The bench mark is a disk set flush in the top of a concrete post at the north
corner of the volleyball courts on the north side of the U.S. Coast Guard base,
23.62 m (77.5 ft) north of the north leg of the Coast Guard flag tower, 11.58 m
(38.0 ft) south of the centerline of Inlet Drive, 7.53 m (24.7 ft) ESE of the SE
leg of a U.S. Coast Guard sign, and 2.29 m (7.5 ft) SE of the NW corner of the
volleyball court.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8532591 PUBLICATION DATE: 04/29/2003
Name: MANASQUAN INLET
NJ
NOAA Chart: 12323 Latitude: 40° 6.1' N ( 40.10170)
USGS Quad: POINT PLEASANT Longitude: 74° 2.1' W ( -74.03500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: MAN NO 1 1962
DESIGNATION: MAN RM 1
MONUMENTATION: Reference Mark disk VM#: 2598
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: KV0834
SETTING CLASSIFICATION: Concrete sidewalk OPUS PID:
LATITUDE: 40° 6.2' N ( 40.10330) LONGITUDE: 74° 2.2' W ( -74.03670)
The bench mark is a disk set flush in concrete sidewalk on the north side of
Inlet Drive in the vicinity of the Coast Guard base, 26.94 m (88.4 ft) south of
the south bulkhead of Manasquan Inlet, 15.54 m (51.0 ft) west of street light
pole No. 67, 10.36 m (34.0 ft) east of street light pole No. 68, 5.49 m (18.0
ft) north of the centerline of Inlet Drive, and 1.22 m (4.0 ft) north of the
north curb of Inlet Drive.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8532591 PUBLICATION DATE: 04/29/2003
Name: MANASQUAN INLET
NJ
NOAA Chart: 12323 Latitude: 40° 6.1' N ( 40.10170)
USGS Quad: POINT PLEASANT Longitude: 74° 2.1' W ( -74.03500)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: M 54 RESET 1976
DESIGNATION: M 54 RESET
MONUMENTATION: Vertical Control disk VM#: 2599
AGENCY: National Geodetic Survey (NGS) IDB PID#: KV3525
SETTING CLASSIFICATION: Concrete apron OPUS PID:
LATITUDE: 40° 6.2' N ( 40.10330) LONGITUDE: 74° 2.2' W ( -74.03670)
The bench mark is a disk set flush a drill hole in the 1 m X 1 m (4 ft X 4 ft)
concrete apron at the north entrance to the U.S. Coast Guard Station House, 35 m
(114 ft) SW of the center of Inlet Drive, 5.76 m (18.9 ft) south of the south
leg of the flag tower, 1.46 m (4.8 ft) north of the center of the north
entrance, and 0.15 m (0.5 ft) above the level of the sidewalk.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8532591 PUBLICATION DATE: 04/29/2003
Name: MANASQUAN INLET
NJ
NOAA Chart: 12323 Latitude: 40° 6.1' N ( 40.10170)
USGS Quad: POINT PLEASANT Longitude: 74° 2.1' W ( -74.03500)
T I D A L D A T U M S
Tidal datums at MANASQUAN INLET based on:
LENGTH OF SERIES: 2 Years
TIME PERIOD: November 1982 - October 1984
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8531680 SANDY HOOK
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (03/29/1984) = 2.489
MEAN HIGHER HIGH WATER MHHW = 1.382
MEAN HIGH WATER MHW = 1.281
North American Vertical Datum NAVD88 = 0.739
MEAN SEA LEVEL MSL = 0.676
MEAN TIDE LEVEL MTL = 0.668
MEAN LOW WATER MLW = 0.055
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (01/21/1984) = -0.647
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
NO 4 1936 2.815 1.534
NO 5 1936 3.177 1.896
MAN 1962 2.851 1.570
MAN NO 1 1962 2.699 1.418
M 54 RESET 1976 3.285 2.004
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 8532591 PUBLICATION DATE: 04/29/2003
Name: MANASQUAN INLET
NJ
NOAA Chart: 12323 Latitude: 40° 6.1' N ( 40.10170)
USGS Quad: POINT PLEASANT Longitude: 74° 2.1' W ( -74.03500)
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.