U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 5
Station ID: 8534044 PUBLICATION DATE: 05/12/2004
Name: LONG PT, LITTLE EGG HARBOR
NJ
NOAA Chart: 12324 Latitude: 39° 36.8' N ( 39.61330)
USGS Quad: TUCKERTON Longitude: 74° 15.8' W ( -74.26330)
To reach the tidal bench marks from the intersection of U.S. Highway 9 and West
Creek Dock Road, proceed 4.8 km (3.0 mi) SE along West Creek Dock Road to the
property at Box NO 133 on Little Egg Harbor. The bench marks are located along
West Creek Dock Road. The gage and staff were located at the property dock.
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 4044 A 1976
DESIGNATION: 853 4044 A TIDAL
MONUMENTATION: Tidal Station disk VM#: 2615
AGENCY: National Ocean Survey (NOS) IDB PID#:
SETTING CLASSIFICATION: Copper clad steel rod OPUS PID:
LATITUDE: 39° 36.8' N ( 39.61330) LONGITUDE: 74° 15.8' W ( -74.26330)
The primary bench mark is a disk located near the SE end of West Creek Dock
Road, 32.58 m (106.9 ft) west of the wood bulkhead at the end of West Creek Dock
Road, 22.19 m (72.8 ft) SW of the NW corner of the wood beach pavilion, 6.34 m
(20.8 ft) south of the centerline of the road, and 1.98 m (6.5 ft) east of
utility pole No. P 1603. The bench mark is set 6 cm (0.2 ft) below ground
level, crimped to the top of a copper-coated steel rod driven 15.2 m (50 ft) and
encased in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 5
Station ID: 8534044 PUBLICATION DATE: 05/12/2004
Name: LONG PT, LITTLE EGG HARBOR
NJ
NOAA Chart: 12324 Latitude: 39° 36.8' N ( 39.61330)
USGS Quad: TUCKERTON Longitude: 74° 15.8' W ( -74.26330)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 4044 B 1976
DESIGNATION: 853 4044 B TIDAL
MONUMENTATION: Tidal Station disk VM#: 2616
AGENCY: National Ocean Survey (NOS) IDB PID#:
SETTING CLASSIFICATION: Copper clad steel rod OPUS PID:
LATITUDE: 39° 36.8' N ( 39.61330) LONGITUDE: 74° 15.8' W ( -74.26330)
The bench mark is a disk located NW of bench mark 4044 A 1976, 21.31 m (69.9 ft)
SW of the SW corner of a one-story elevated wood frame house, 9.48 m (31.1 ft)
north of the centerline of West Creek Dock Road, 4.72 m (15.5 ft) NE of utility
pole No. BT 65, and 2.38 m (7.8 ft) east of a wood retaining wall. The bench
mark is set 6 cm (0.2 ft) below ground level, crimped to the top of a
copper-coated steel rod driven 15.2 m (50 ft) and encased in a PVC pipe and
concrete kickblock.
BENCH MARK STAMPING: 4044 C 1976
DESIGNATION: 853 4044 C TIDAL
MONUMENTATION: Tidal Station disk VM#: 2617
AGENCY: National Ocean Survey (NOS) IDB PID#:
SETTING CLASSIFICATION: Copper clad steel rod OPUS PID:
LATITUDE: 39° 36.8' N ( 39.61330) LONGITUDE: 74° 15.8' W ( -74.26330)
The bench mark is a disk located 122 m (400 ft) west of bench mark 4044 B 1976,
30.66 m (100.6 ft) SE of utility pole NO BT 6312, 8.08 m (26.5 ft) NE of the
north side of a drainage ditch, 6.61 m (21.7 ft) west of utility pole No.
P31601, 6.58 m (21.6 ft) south of the centerline of West Creek Dock Road. The
bench mark is set 6 cm (0.2 ft) below ground level, crimped to the top of a
copper-coated steel rod driven 15.2 m (50 ft) and encased in a PVC pipe and
concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 5
Station ID: 8534044 PUBLICATION DATE: 05/12/2004
Name: LONG PT, LITTLE EGG HARBOR
NJ
NOAA Chart: 12324 Latitude: 39° 36.8' N ( 39.61330)
USGS Quad: TUCKERTON Longitude: 74° 15.8' W ( -74.26330)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: 4044 D 1976
DESIGNATION: 853 4044 D TIDAL
MONUMENTATION: Tidal Station disk VM#: 2618
AGENCY: National Ocean Survey (NOS) IDB PID#:
SETTING CLASSIFICATION: Copper clad steel rod OPUS PID:
LATITUDE: 39° 36.8' N ( 39.61330) LONGITUDE: 74° 15.8' W ( -74.26330)
The bench mark is a disk located NW of bench mark 4044 C 1976, 20.33 m (66.7 ft)
south of the SE corner of a two-story frame house, 11.25 m (36.9 ft) west of
utility pole No. P 31600, and 6.55 m (21.5 ft) south of the centerline of West
Creek Dock Road. The bench mark is set 6 cm (0.2 ft) below ground level,
crimped to the top of a copper-coated steel rod driven 14.0 m (46 ft) and
encased in a PVC pipe and concrete kickblock.
BENCH MARK STAMPING: 4044 E 1976
DESIGNATION: 853 4044 E TIDAL
MONUMENTATION: Tidal Station disk VM#: 2619
AGENCY: National Ocean Survey (NOS) IDB PID#:
SETTING CLASSIFICATION: Copper clad steel rod OPUS PID:
LATITUDE: 39° 36.8' N ( 39.61330) LONGITUDE: 74° 15.8' W ( -74.26330)
The bench mark is a disk located 0.2 km (0.1 mi) NW of bench mark 4044 D, 21.34
m (70.0 ft) east of the NE end of a small bridge and 7.32 m (24.0 ft) north of
the centerline of West Creek Dock Road. The bench mark is set 6 cm (0.2 ft)
below ground level, crimped to the top of a copper-coated steel rod driven 15.2
m (50 ft) and encased in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 5
Station ID: 8534044 PUBLICATION DATE: 05/12/2004
Name: LONG PT, LITTLE EGG HARBOR
NJ
NOAA Chart: 12324 Latitude: 39° 36.8' N ( 39.61330)
USGS Quad: TUCKERTON Longitude: 74° 15.8' W ( -74.26330)
T I D A L D A T U M S
Tidal datums at LONG PT, LITTLE EGG HARBOR based on:
LENGTH OF SERIES: 7 MONTHS
TIME PERIOD: March 1977 - September 1977
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8557380 LEWES, FT. MILES
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
MEAN HIGHER HIGH WATER MHHW = 0.704
MEAN HIGH WATER MHW = 0.628
MEAN TIDE LEVEL MTL = 0.327
MEAN SEA LEVEL MSL = 0.320
MEAN LOW WATER MLW = 0.026
MEAN LOWER LOW WATER MLLW = 0.000
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
4044 A 1976 1.075 0.447
4044 B 1976 1.026 0.398
4044 C 1976 0.998 0.370
4044 D 1976 0.997 0.369
4044 E 1976 1.586 0.958
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 5
Station ID: 8534044 PUBLICATION DATE: 05/12/2004
Name: LONG PT, LITTLE EGG HARBOR
NJ
NOAA Chart: 12324 Latitude: 39° 36.8' N ( 39.61330)
USGS Quad: TUCKERTON Longitude: 74° 15.8' W ( -74.26330)
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.