Bench Mark Sheet for 8534540, ABSECON, ABSECON 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8534540                         PUBLICATION DATE:  02/05/2004
Name:       ABSECON, ABSECON CREEK                            
            NJ
NOAA Chart: 12316                           Latitude:   39° 25.4' N (  39.42330)
USGS Quad:  OCEANVILLE                      Longitude:  74° 30.0' W ( -74.50000)


To reach the tidal bench marks from the intersection of U.S. Highway 30 and U.S.
Highway 9, proceed 0.72 km (0.45 mi) SE along U.S. Highway 30 to the South Shore
Road bridge over Absecon Creek.  The bench marks are located along U.S. Highway
30 (Absecon Boulevard) over Absecon Creek in Absecon.  The tide gage and staff
were located on a structure attached to the west side of the bridge.


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


                 PRIMARY BENCH MARK STAMPING:  4540 D 1977
                         DESIGNATION:          853 4540 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2697
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2455
SETTING CLASSIFICATION:  Concrete abutment                     OPUS PID:        
LATITUDE:   39° 25.4' N (  39.42330)          LONGITUDE:  74° 30.0' W ( -74.50000)


The primary bench mark is a disk set on top of an abandoned stone bridge
abutment wall on the NW side of Absecon Creek, 24.38 m (80.0 ft) SE of the SE
corner of the Phillips gas station (a 1-story concrete block building), 23.41 m
(76.8 ft) west of the new bridge west face, 18.07 m (59.3 ft) south of wood
utility pole #P41 984, 1.98 m (6.5 ft) north of the south face of the old
abutment, and 1.07 m (3.5 ft) east of the west face of the stone abutment.

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

                                                                                
Station ID: 8534540                         PUBLICATION DATE:  02/05/2004
Name:       ABSECON, ABSECON CREEK                            
            NJ
NOAA Chart: 12316                           Latitude:   39° 25.4' N (  39.42330)
USGS Quad:  OCEANVILLE                      Longitude:  74° 30.0' W ( -74.50000)


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


                         BENCH MARK STAMPING:  4540 E 1977
                         DESIGNATION:          853 4540 E TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2698
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2456
SETTING CLASSIFICATION:  Concrete abutment                     OPUS PID#: JU2456
LATITUDE:   39° 25.4' N (  39.42330)          LONGITUDE:  74° 30.0' W ( -74.50000)


The bench mark is a disk set on top of the SE concrete abutment wall of the
South Shore Road bridge over Absecon Creek, on the SE side of the creek, 10.73 m
(35.2 ft) west of wood utility pole #P3312, 5.06 m (16.6 ft) NE of the south end
of the abutment, 4.85 m (15.9 ft) SW of a fire hydrant, and 3.93 m (12.9 ft) SW
along the wall from the south curb of U.S. Highway 30 (Absecon Boulevard).



                         BENCH MARK STAMPING:  4540 F 1977
                         DESIGNATION:          853 4540 F TIDAL PORTER

MONUMENTATION:           Tidal Station disk                    VM#:         2699
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2457
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   39° 25.4' N (  39.42330)          LONGITUDE:  74° 30.0' W ( -74.50000)


The bench mark is a disk located 61 m (200 ft) SE of Bench Mark 4540 E 1977 and
17.43 m (57.2 ft) NE of the NE corner of a service station.  The bench mark is
0.06 m (0.2 ft) below ground level, crimped to the top of a copper-clad steel
rod driven 15.2 m (50 ft), and encased in a PVC pipe and concrete kickblock. 
NOTE:  The mark was searched but not found in 2002.

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

                                                                                
Station ID: 8534540                         PUBLICATION DATE:  02/05/2004
Name:       ABSECON, ABSECON CREEK                            
            NJ
NOAA Chart: 12316                           Latitude:   39° 25.4' N (  39.42330)
USGS Quad:  OCEANVILLE                      Longitude:  74° 30.0' W ( -74.50000)


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


                         BENCH MARK STAMPING:  4540 G 1977
                         DESIGNATION:          853 4540 G TIDAL PORTER

MONUMENTATION:           Tidal Station disk                    VM#:         2700
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2458
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   39° 25.3' N (  39.42170)          LONGITUDE:  74° 30.0' W ( -74.50000)


The bench mark is a disk located 122 m (400 ft) SE of Bench Mark 4540 F 1977,
36.12 m (118.5 ft) SE of wood utility pole #P13953, 12.50 m (41.0 ft) SW of the
centerline of U.S. Highway 30 (Absecon Boulevard), 8.84 m (29.0 ft) east of the
east end of the billboard, and 1.62 m (5.3 ft) NW of wood utility pole #43-2 49.
 The bench mark is 0.06 m (0.2 ft) below ground level, crimped to the top of a
copper-clad steel rod driven 15.2 m (50 ft), and encased in a PVC pipe and
concrete kickblock.



                         BENCH MARK STAMPING:  4540 H 1977
                         DESIGNATION:          853 4540 H TIDAL PORTER

MONUMENTATION:           Tidal Station disk                    VM#:         2701
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2459
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   39° 25.3' N (  39.42170)          LONGITUDE:  74° 29.9' W ( -74.49830)


The bench mark is a disk located 82 m (269 ft) SE of Bench Mark 4540 G 1977,
54.62 m (179.2 ft) SE of a catch basin, 26.12 m (85.7 ft) NE of wood utility
pole #P13557, 14.51 m (47.6 ft) NE of the centerline of U.S. Highway 30, 4 m (13
ft) NE of the NE curb of U.S. Highway 30, and 1.83 m (6.0 ft) east of the east
leg of a steel traffic sign.  The bench mark is 0.06 m (0.2 ft) below ground
level, crimped to the top of a copper-clad 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: 8534540                         PUBLICATION DATE:  02/05/2004
Name:       ABSECON, ABSECON CREEK                            
            NJ
NOAA Chart: 12316                           Latitude:   39° 25.4' N (  39.42330)
USGS Quad:  OCEANVILLE                      Longitude:  74° 30.0' W ( -74.50000)


                            T I D A L   D A T U M S 


Tidal datums at ABSECON, ABSECON CREEK based on:

     LENGTH OF SERIES:      1 YEAR
     TIME PERIOD:           December 1977 - November 1978
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8557380 LEWES, FT. MILES


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

     HIGHEST OBSERVED WATER LEVEL (12/19/1977)         =  1.922
     MEAN HIGHER HIGH WATER                     MHHW   =  1.337
     MEAN HIGH WATER                            MHW    =  1.226
     North American Vertical Datum              NAVD88 =  0.732
     MEAN SEA LEVEL                             MSL    =  0.676
     MEAN TIDE LEVEL                            MTL    =  0.637
     MEAN LOW WATER                             MLW    =  0.048
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (12/10/1977)         = -0.776

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     4540 D 1977                                 2.349    1.123
     4540 E 1977                                 3.443    2.217
     4540 F 1977                                 2.957    1.731
     4540 G 1977                                 2.513    1.287
     4540 H 1977                                 2.222    0.996


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

                                                                                
Station ID: 8534540                         PUBLICATION DATE:  02/05/2004
Name:       ABSECON, ABSECON CREEK                            
            NJ
NOAA Chart: 12316                           Latitude:   39° 25.4' N (  39.42330)
USGS Quad:  OCEANVILLE                      Longitude:  74° 30.0' W ( -74.50000)


                             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.

Return to Top
Products available at 8534540 ABSECON, ABSECON CREEK, NJ