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Bench Mark Sheet for 8531077, RAHWAY RIVER #1 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8531077                         PUBLICATION DATE:  06/16/2004
Name:       RAHWAY RIVER  #1                                  
            NJ
NOAA Chart: 12333                           Latitude:   40° 35.9' N (  40.59830)
USGS Quad:  ARTHUR KILL                     Longitude:  74° 13.9' W ( -74.23170)


To reach the tidal bench marks from exit 12 of the New Jersey Turnpike, proceed
west towards Rahway on Roosevelt Ave (County Route 602) to the first
intersection, then turn right and proceed north on Old Post Road to its end at
Liberty Park, then turn right and proceed east on a dirt road and continue under
the turnpike to the end of the road and the railroad bridge.  The bench marks
are near the Central Railroad Company railroad bridge.  The tide station was on
the railroad bridge over the Rahway River.


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


                 PRIMARY BENCH MARK STAMPING:  1077 B 1975
                         DESIGNATION:          853 1077 B TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2503
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Copper clad steel rod                 OPUS PID:        
LATITUDE:   40° 35.9' N (  40.59830)          LONGITUDE:  74° 13.9' W ( -74.23170)


The primary bench mark is a disk located under the west bridge southbound lanes
of the turnpike, 15.85 m (52.0 ft) NW of an angle point in an 2 m (8 ft) high
chain link fence, 10.45 m (34.3 ft) NE of the NW corner, 5.88 m (19.3 ft) west
of the east side of the bridge, and 3.32 m (10.9 ft) north of the NE corner of
the most southerly column of the bridge.  The bench mark is set 6 m (0.2 ft)
below ground level, crimped to the top of a copper-clad steel rod driven 3.7 m
(12 ft) to refusal, and encased in a PVC pipe and concrete.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  5

                                                                                
Station ID: 8531077                         PUBLICATION DATE:  06/16/2004
Name:       RAHWAY RIVER  #1                                  
            NJ
NOAA Chart: 12333                           Latitude:   40° 35.9' N (  40.59830)
USGS Quad:  ARTHUR KILL                     Longitude:  74° 13.9' W ( -74.23170)


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


                         BENCH MARK STAMPING:  1077 A 1975
                         DESIGNATION:          853 1077 A TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2502
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Abutment                              OPUS PID:        
LATITUDE:   40° 35.9' N (  40.59830)          LONGITUDE:  74° 13.9' W ( -74.23170)


The bench mark is a disk set on the SW abutment of the railroad bridge over the
Rahway River, 0.2 km (0.1 mi) east of bench mark 1077 B 1975, 18.99 m (62.2 ft)
north of the NE corner of the drawbridge tenders house, 2.16 m (7.1 ft) west of
the west track rail, 0.98 m (3.2 ft) north of the SW corner of the abutment, and
level with the track surface.



                         BENCH MARK STAMPING:  1077 C 1975
                         DESIGNATION:          853 1077 C TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2504
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Foundation footing                    OPUS PID:        
LATITUDE:   40° 35.9' N (  40.59830)          LONGITUDE:  74° 13.9' W ( -74.23170)


The bench mark is a disk set in the NW foundation footing for a high voltage
line steel tower next to and west of the southbound lanes of the New Jersey
Turnpike, 34.41 m (112.9 ft) SW of an angle point of an 2 m (8 ft) high chain
link fence, 0.43 m (1.4 ft) east of the NW corner of the footing, 0.12 m (0.4
ft)  NW of the corner of the steel frame of tower #W1323 Sec. 1, and at ground
level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  5

                                                                                
Station ID: 8531077                         PUBLICATION DATE:  06/16/2004
Name:       RAHWAY RIVER  #1                                  
            NJ
NOAA Chart: 12333                           Latitude:   40° 35.9' N (  40.59830)
USGS Quad:  ARTHUR KILL                     Longitude:  74° 13.9' W ( -74.23170)


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


                         BENCH MARK STAMPING:  1077 D 1975
                         DESIGNATION:          853 1077 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2505
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Copper clad steel rod                 OPUS PID:        
LATITUDE:   40° 35.9' N (  40.59830)          LONGITUDE:  74° 13.9' W ( -74.23170)


The bench mark is a disk located in Liberty Park at the end of Post Boulevard,
0.3 km (0.2 mi) west of bench mark 1077 C 1975, 24.08 m (79.0 ft) east of the
centerline of Post Boulevard, 10.67 m (35.0 ft) north of a 0.82 m (2.7 ft)
diameter manhole, 6.28 m (20.6 ft) NE of a 0.52 m (1.7 ft) diameter tree, and
4.60 m (15.1 ft) north of utility pole #BP 1 209.  The bench mark is set 6 m
(0.2 ft) below ground level, crimped to the top of a copper-clad steel rod
driven 5.5 m (18 ft) to refusal, and encased in a PVC pipe and concrete.



                         BENCH MARK STAMPING:  1077 E 1975
                         DESIGNATION:          853 1077 E TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2506
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Copper clad steel rod                 OPUS PID:        
LATITUDE:   40° 35.9' N (  40.59830)          LONGITUDE:  74° 13.9' W ( -74.23170)


The bench mark is a disk located at the Private Nicholas Minue Public School in
Cartaret, 152 m (500 ft) SW of bench mark 1077 D 1975, 15.36 m (50.4 ft) west of
the west curb of Post Boulevard, 15.30 m (50.2 ft) north of the top step of the
concrete steps leading to the entrance of the school, and 2.23 m (7.3 ft) SE of
the inside corner of the north exterior column of the east face of the school. 
The bench mark is set 6 cm (0.2 ft) below ground level, crimped to the top of a
copper-clad steel rod driven 11.0 m (36 ft) to refusal, and encased in a PVC
pipe and concrete.

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

                                                                                
Station ID: 8531077                         PUBLICATION DATE:  06/16/2004
Name:       RAHWAY RIVER  #1                                  
            NJ
NOAA Chart: 12333                           Latitude:   40° 35.9' N (  40.59830)
USGS Quad:  ARTHUR KILL                     Longitude:  74° 13.9' W ( -74.23170)


                            T I D A L   D A T U M S 


Tidal datums at RAHWAY RIVER  #1 based on:

     LENGTH OF SERIES:      9 MONTHS
     TIME PERIOD:           March 1976 - November 1976
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8531680 SANDY HOOK


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

     MEAN HIGHER HIGH WATER                     MHHW   =  1.806
     MEAN HIGH WATER                            MHW    =  1.703
     MEAN SEA LEVEL                             MSL    =  0.895
     MEAN TIDE LEVEL                            MTL    =  0.886
     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

     1077 B 1975                                 4.993    3.290
     1077 A 1975                                 4.847    3.144
     1077 C 1975                                 4.715    3.012
     1077 D 1975                                 4.117    2.414
     1077 E 1975                                 7.950    6.247


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

                                                                                
Station ID: 8531077                         PUBLICATION DATE:  06/16/2004
Name:       RAHWAY RIVER  #1                                  
            NJ
NOAA Chart: 12333                           Latitude:   40° 35.9' N (  40.59830)
USGS Quad:  ARTHUR KILL                     Longitude:  74° 13.9' W ( -74.23170)


                             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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Products available at 8531077 RAHWAY RIVER #1, NJ

Revised: 08/08/2018
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services