Bench Mark Sheet for 8538512, PAULSBORO, MANTUA CREEK NJ

Superseded Epoch

Large map location marker Station Location
Small red map location marker Published bench mark
Small blue map location marker Unpublished bench mark

Bench mark positions only appear on the map if their coordinates in the CO-OPS database are at the precision of degrees/minutes/seconds/and tenths of seconds. If the coordinates are less precise, the mark will not appear.

Printable version

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
Datums Page                                                        Page  1 of  5

                                                                                
Station ID: 8538512                         PUBLICATION DATE:  05/20/2004
Name:       PAULSBORO, MANTUA CREEK                           
            NJ
NOAA Chart: 12312                           Latitude:   39° 50.1' N (  39.83500)
USGS Quad:  WOODBURY                        Longitude:  75° 14.3' W ( -75.23830)


To reach the tidal bench marks from the intersection of State Highway 44 (East
Broad Street) and North Commerce Street in the town of Paulsboro, proceed 0.3 km
(0.2 mi) NW on North Commerce Street, then turn right and proceed east on the
road alongside the north rail of the Conrail Railroad tracks for 0.2 km (0.1 mi)
to the bridge bulkhead on the west bank of the Mantua Creek.  The bench marks
are located west of the creek, along the railroad tracks.  The tide gage and
staff were located on the bulkhead north of the tracks.


                         T I D A L   B E N C H   M A R K S


                 PRIMARY BENCH MARK STAMPING:  8512 B 1977
                         DESIGNATION:          853 8512 B

MONUMENTATION:           Tidal Station disk                    VM#:         6044
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID#: DI3378
LATITUDE:   39° 50.1' N (  39.83500)          LONGITUDE:  75° 14.3' W ( -75.23830)


The primary bench mark is a disk located near the intersection of Chestnut and
Monroe Streets, 26.88 m (88.2 ft) SE of the intersection of the centerline of
Monroe and Chestnut Streets, 18 m (59 ft) SW of an abandoned concrete ice house,
15.30 m (50.2 ft) north of the NW corner of house #315, and 3.54 m (11.6 ft)
south of wood utility pole #6725.  The bench mark is set 0.06 m (0.2 ft) below
ground level, crimped to the top of a galvanized steel rod driven 6.1 m (20 ft)
to refusal, 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: 8538512                         PUBLICATION DATE:  05/20/2004
Name:       PAULSBORO, MANTUA CREEK                           
            NJ
NOAA Chart: 12312                           Latitude:   39° 50.1' N (  39.83500)
USGS Quad:  WOODBURY                        Longitude:  75° 14.3' W ( -75.23830)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  8512 A 1977
                         DESIGNATION:          853 8512 A

MONUMENTATION:           Tidal Station disk                    VM#:         6043
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   39° 50.1' N (  39.83500)          LONGITUDE:  75° 14.3' W ( -75.23830)


The bench mark is a disk located 26.43 m (86.7 ft) NW of the NW corner of the
bridgetender's office, 22.56 m (74.0 ft) north of the most southerly rail of the
tracks, 14.14 m (46.4 ft) NE of a wood utility pole, and 12.31 m (40.4 ft) south
of a 1.83 m (6.0 ft) high chainlink fence parallel to the railroad tracks.  The
bench mark is set 0.06 m (0.2 ft) below ground level, crimped to the top of a
galvanized steel rod driven 4.9 m (16 ft) to refusal, and encased in a PVC pipe
and concrete kickblock.



                         BENCH MARK STAMPING:  8512 C 1977
                         DESIGNATION:          853 8512 C TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         6045
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   39° 50.1' N (  39.83500)          LONGITUDE:  75° 14.3' W ( -75.23830)


The bench mark is a disk located on the south side of the lot at 742 Delaware
Street, adjacent to a blacktop roadway known locally as Railroad Avenue, on the
north side of the Conrail tracks, 61 m (200 ft) north of the southern rail of
the tracks, 14.63 m (48.0 ft) SW of the SW corner of the house, 6.46 m (21.2 ft)
north of the centerline of Railroad Avenue, and 4.57 m (15.0 ft) NE of wood
utility pole #11121.  The bench mark is set 0.06 m (0.2 ft) below ground level,
crimped to the top of a galvanized steel rod driven 4.9 m (16 ft) to refusal,
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: 8538512                         PUBLICATION DATE:  05/20/2004
Name:       PAULSBORO, MANTUA CREEK                           
            NJ
NOAA Chart: 12312                           Latitude:   39° 50.1' N (  39.83500)
USGS Quad:  WOODBURY                        Longitude:  75° 14.3' W ( -75.23830)


                         T I D A L   B E N C H   M A R K S


                         BENCH MARK STAMPING:  9.587 M 10 1930
                         DESIGNATION:          M 10

MONUMENTATION:           Bench Mark disk                       VM#:         6046
AGENCY:                  US Coast & Geodetic Survey
                         (USC&GS)                                 IDB PID#:  JU0669
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   39° 50.1' N (  39.83500)          LONGITUDE:  75° 14.3' W ( -75.23830)


The bench mark is a disk set flush in the NW corner of the foundation for a
railroad semaphore on the south side of Conrail tracks, 29.08 m (95.4 ft) south
of  the SW corner of a 2 m (6 ft) high chain-link fence on the north side of the
tracks, 21.21 m (69.6 ft) east of the east curb of North Commerce Street, 1.95 m
(6.4 ft) south of the south rail, and 0.24 m (0.8 ft) above ground level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  5

                                                                                
Station ID: 8538512                         PUBLICATION DATE:  05/20/2004
Name:       PAULSBORO, MANTUA CREEK                           
            NJ
NOAA Chart: 12312                           Latitude:   39° 50.1' N (  39.83500)
USGS Quad:  WOODBURY                        Longitude:  75° 14.3' W ( -75.23830)


                            T I D A L   D A T U M S 


Tidal datums at PAULSBORO, MANTUA CREEK based on:

     LENGTH OF SERIES:      8 MONTHS
     TIME PERIOD:           March 1978 - October 1978
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8545530 PHILADELPHIA (PIER 11 NORTH), DEL. RIVER


Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:

     MEAN HIGHER HIGH WATER                     MHHW   =  1.885
     MEAN HIGH WATER                            MHW    =  1.775
     MEAN SEA LEVEL                             MSL    =  0.994
     MEAN TIDE LEVEL                            MTL    =  0.916
     MEAN LOW WATER                             MLW    =  0.056
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     8512 B 1977                                 4.528    2.753
     8512 A 1977                                 3.291    1.516
     8512 C 1977                                 5.143    3.368
     9.587 M 10 1930                             3.523    1.748


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  5

                                                                                
Station ID: 8538512                         PUBLICATION DATE:  05/20/2004
Name:       PAULSBORO, MANTUA CREEK                           
            NJ
NOAA Chart: 12312                           Latitude:   39° 50.1' N (  39.83500)
USGS Quad:  WOODBURY                        Longitude:  75° 14.3' W ( -75.23830)


                             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.

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