U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
To reach the tidal bench marks from the traffic circle intersection of State
Highway 72 and Long Beach Boulevard in Ship Bottom, proceed north on Long Beach
Boulevard (Central Avenue) for 13.8 km (8.6 mi) to Broadway Avenue, turn left
and go west on Broadway Avenue for 0.3 km (0.2 mi) to 6th Street, turn left onto
6th Street and go 0.3 km (0.2 mi) to Lighthouse Marina. The bench marks are in
the vicinity of the old Coast Guard Station, Lighthouse Marina, and Lighthouse
State Park. The tide gage was located on the U.S. Coast Guard Barnegat Light
property.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 3615 B 1976
DESIGNATION: 853 3615 B
MONUMENTATION: Tidal Station disk VM#: 11483
AGENCY: National Ocean Service (NOS) IDB PID#: AM6913
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 39° 45.6' N ( 39.76039) LONGITUDE: 74° 6.5' W ( -74.10864)
The primary bench mark is a disk set 0.5 km (0.3 mi) SW of Barnegat Lighthouse,
122 m (400 ft) NW of the intersection of Broadway Avenue and 6th Street, 73 m
(238 ft) SE of a 1 m ( 2 ft) diameter manhole at the intersection of 6th Street
and Bayview Avenue, 50 m (164 ft) south of the SE corner of a berth which
parallels 6th Street, 5.30 m (17.4 ft) NE of the NW corner of the tennis courts,
1.40 m (4.6 ft) NNW of wood utility pole numbered P24284, and 0.64 m (2.1 ft) SW
of the south curb of 6th Street. The bench mark is set 6 cm (0.2 ft) below
ground, crimped to a copper-clad steel rod driven 15.2 m (50 ft), and encased in
a 4-inch PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: BARNEGAT LIGHT 3 NO 4 1962
DESIGNATION: BARNEGAT LIGHT 3 RM 4
MONUMENTATION: Reference Mark disk VM#: 11480
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: JU0178
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 39° 45.8' N ( 39.76283) LONGITUDE: 74° 6.5' W ( -74.10786)
The bench mark is a disk set in a concrete monument along the south side of the
east bound entry lane of the Barnegat Lighthouse access road, 26.64 m (87.4 ft)
SW of triangulation station BARNEGAT LIGHT 3 1962 1980, 21.95 m (72.0 ft) east
of the centerline of Broadway Avenue, 15.54 m (51.0 ft) south of the south curb
of the entry lane, 7.92 m (26.0 ft) NE of the NW corner of a restaurant, 0.46 m
(1.5 ft) north of a metal witness post, and 0.03 m (0.1 ft) below grade.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: BARNEGAT LIGHT 3 NO 6 1962
DESIGNATION: BARNEGAT LIGHT 3 RM 6
MONUMENTATION: Reference Mark disk VM#: 11481
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: JU0180
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 39° 45.8' N ( 39.76330) LONGITUDE: 74° 6.4' W ( -74.10670)
The bench mark is a disk set in a concrete monument located on the south side of
the Barnegat Lighthouse parking lot, 10.49 m (34.4 ft) west of the east corner
of the parking lot, 8.90 m (29.2 ft) east of the west corner of the parking lot,
and 1.19 m (3.9 ft) south of the north edge of the parking lot.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: Q 67 1964
DESIGNATION: Q 67
MONUMENTATION: Bench Mark disk VM#: 11482
AGENCY: US Coast and Geodetic Survey
(USC&GS) IDB PID#: JU0176
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 39° 45.5' N ( 39.75830) LONGITUDE: 74° 6.3' W ( -74.10500)
The bench mark is a disk set in the south corner of the lawn at the old Coast
Guard Station, 95 m (311 ft) SE of the centerline of Central Avenue, 11.28 m
(37.0 ft) SE of the SE edge of the sidewalk leading to the entrance of the
station, 9.45 m (31.0 ft) NE of the centerline of 7th Street, and 0.4 m (1.3 ft)
NE of the NE edge of the sidewalk in front of the station. The bench mark is set
3 cm (0.1 ft) below grade, crimped to a copper-clad steel rod driven 26.2 m (86
ft) to refusal.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 3615 C 1976
DESIGNATION: 853 3615 C
MONUMENTATION: Tidal Station disk VM#: 11484
AGENCY: National Ocean Survey (NOS) IDB PID#: AM6921
SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID:
LATITUDE: 39° 45.7' N ( 39.76103) LONGITUDE: 74° 6.5' W ( -74.10775)
The bench mark is a disk set along the west side of Broadway Avenue at the
intersection of Broadway Avenue and 5th Street, 107 m (350 ft) NE of bench mark
3615 B 1976, 58 m (190 ft) NE of the SE corner of the bulkhead of a nearby
berth, 11.89 m (39.0 ft) SW of a 1 m (2 ft) diameter manhole at the intersection
of Broadway Avenue and 5th Street, 11.13 m (36.5 ft) west of the centerline of
Broadway Avenue, and 3.29 m (10.8 ft) south of wood utility pole numbered
P9231. The bench mark is set 24 cm (0.8 ft) below grade, crimped to a
copper-clad steel rod driven 15.2 m (50 ft), and encased in a 4-inch PVC pipe
with concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: BARNEGAT LIGHT 3 1962 1980
DESIGNATION: BARNEGAT LIGHT 3 RESET
MONUMENTATION: Triangulation Station disk VM#: 11485
AGENCY: National Geodetic Survey (NGS) IDB PID#: JU2475
SETTING CLASSIFICATION: Concrete monument OPUS PID#: JU2475
LATITUDE: 39° 45.8' N ( 39.76330) LONGITUDE: 74° 6.5' W ( -74.10830)
The bench mark is a disk set in a concrete monument along the south side of the
east bound entry lane of the lighthouse access road, 44.20 m (145.0 ft) east of
the centerline of Broadway Avenue, 20.12 m (66.0 ft) SSE of powerline pole
numbered 37989, 7.92 m (26.0 ft) SW of the SW corner of the guard station at the
lighthouse access road, 6.25 m (20.5 ft) NW of a chain link fence post, 5.18 m
(17.0 ft) south of the center of the access road divider, 1.62 m (5.3 ft) south
of the south curb of the entry lane to the lighthouse, 0.30 m (1.0 ft) below
grade, and covered by a 0.3 m x 0.3 m (1 ft x 1 ft) steel cover.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: BARNEGAT LIGHT 3 1962 RM 7 1980
DESIGNATION: BARNEGAT LIGHT 3 RM 7
MONUMENTATION: Reference Mark disk VM#: 11486
AGENCY: National Geodetic Survey (NGS) IDB PID#: JU2476
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 39° 45.8' N ( 39.76303) LONGITUDE: 74° 6.5' W ( -74.10761)
The bench mark is a disk set in a concrete monument at the NW corner of the
guard station located at the Barnegat Lighthouse access road, 52 m (170 ft) east
of the center of Broadway Avenue, 19.81 m (65.0 ft) SE of a powerline pole
numbered 37989, 3.11 m (10.2 ft) south of the center of the west bound exit lane
of the access road, and 0.46 m (1.5 ft) NW of the NW corner of the guard
station.
BENCH MARK STAMPING: 3615 D 1995
DESIGNATION: 853 3615 D
MONUMENTATION: Tidal Station disk VM#: 13563
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete pier OPUS PID#: AM6922
LATITUDE: 39° 45.6' N ( 39.76075) LONGITUDE: 74° 6.6' W ( -74.11047)
The bench mark is a disk set in the NW corner of the concrete pier at the U.S.
Coast Base Barnegat Light, 7.86 m (25.8 ft) NW of a light pole, 3.05 m (10.0 ft)
SE of the NW corner of the concrete bulkhead, 0.55 m (1.8 ft) NE of the SW edge
of concrete bulkhead.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 8 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: BARNEGAT LIGHT 3 1962 RM 8 1980
DESIGNATION: BARNEGAT LIGHT 3 RM 8
MONUMENTATION: Reference Mark disk VM#: 13564
AGENCY: National Geodetic Survey (NGS) IDB PID#: JU2477
SETTING CLASSIFICATION: Curb OPUS PID:
LATITUDE: 39° 45.8' N ( 39.76330) LONGITUDE: 74° 6.4' W ( -74.10670)
The bench mark is a disk set in the curb along the north side of the west bound
exit lane of the Barnegat Lighthouse access road, 32 m (104 ft) east of the
centerline of Broadway Avenue, 24 m (79 ft) NW of the NW corner of the guard
station at the access road, 12 m (40 ft) north of the access road divider, and
4.72 m (15.5 ft) west of a powerline pole numbered 37989.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 9 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
T I D A L D A T U M S
Tidal datums at BARNEGAT INLET (INSIDE) based on:
LENGTH OF SERIES: 11 Years
TIME PERIOD: 1/1985 - 12/1993 ; 1/1995 - 12/1996
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 (12/11/1992) = 1.866
MEAN HIGHER HIGH WATER MHHW = 0.765
MEAN HIGH WATER MHW = 0.694
MEAN TIDE LEVEL MTL = 0.366
North American Vertical Datum NAVD88 = 0.360
MEAN SEA LEVEL MSL = 0.355
MEAN LOW WATER MLW = 0.037
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (03/04/1996) = -0.847
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
3615 B 1976 1.480 0.786
BARNEGAT LIGHT 3 NO 4 1962 2.247 1.553
BARNEGAT LIGHT 3 NO 6 1962 2.575 1.881
Q 67 1964 2.276 1.582
3615 C 1976 1.555 0.861
BARNEGAT LIGHT 3 1962 1980 1.630 0.936
BARNEGAT LIGHT 3 1962 RM 7 1980 2.250 1.556
3615 D 1995 1.680 0.986
BARNEGAT LIGHT 3 1962 RM 8 1980 1.626 0.932
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 10 of 10
Station ID: 8533615 PUBLICATION DATE: 04/21/2003
Name: BARNEGAT INLET (INSIDE)
NJ
NOAA Chart: 12323 Latitude: 39° 45.7' N ( 39.76170)
USGS Quad: BARNEGAT LIGHT Longitude: 74° 6.7' W ( -74.11170)
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.