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Bench Mark Sheet for 8535101, CORSON INLET 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Superseded Epoch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Small blue map location marker Unpublished bench mark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  7

                                                                                
Station ID: 8535101                         PUBLICATION DATE:  05/20/2004
Name:       CORSON INLET                                      
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.9' N (  39.21500)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 38.9' W ( -74.64830)


To reach the tidal bench marks from the post office in Strathmere, proceed NE on
Ocean Drive 0.40 km (0.25 mi) to the toll booth on the bridge over Strathmere
Bay, continue NE on Ocean Drive 1.8 km (1.1 mi) to the NE end of the Ocean Drive
(Bay Avenue) over Corson Inlet.  The bench marks are located along Bay Avenue
and the tide gage and staff were located on a platform on the side of the Cape
May County bridge over Corson Inlet.


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


                 PRIMARY BENCH MARK STAMPING:  5101 H 1977
                         DESIGNATION:          853 5101 H TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2757
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2404
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   39° 13.0' N (  39.21670)          LONGITUDE:  74° 38.8' W ( -74.64670)


The bench mark is a disk located 0.2 km (0.1 mi) SW of bench mark 5101 G 1977,
22.40 m (73.5 ft) NW of the NE and of the metal rail on the east side of the Bay
Avenue Bridge over Corson Inlet, 19.75 m (64.8 ft) west of wood utility pole
#241 on the east side of Bay Avenue, 15.27 m (50.1 ft) north of the NE end of
the steel guard rail on the west of the bridge, and 12.04 m (39.5 ft) NW of the
centerline of Bay Avenue.  The bench mark is set 6 cm (0.2 ft) below ground
level, crimped to the top of a galvanized 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  7

                                                                                
Station ID: 8535101                         PUBLICATION DATE:  05/20/2004
Name:       CORSON INLET                                      
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.9' N (  39.21500)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 38.9' W ( -74.64830)


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


                         BENCH MARK STAMPING:  CURVE 2 1966
                         DESIGNATION:          CURVE 2

MONUMENTATION:           Triangulation Station disk            VM#:         2750
AGENCY:                  US Coast & Geodetic Survey
                         (USC&GS)                                 IDB PID#:  JU2410
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID#: JU2410
LATITUDE:   39° 13.6' N (  39.22670)          LONGITUDE:  74° 38.3' W ( -74.63830)


The bench mark is a disk set in the top of a 0.15 m (0.5 ft) diameter orangeburg
pipe filled with concrete, 8 m (25 ft) SE of the centerline of Bay Avenue, 6 m
(19 ft) NE of the NE curb of 55th Street, and 0.30 m (1.0 ft) above ground
level.



                         BENCH MARK STAMPING:  CI 2 1971
                         DESIGNATION:          853 5101 CI 2

MONUMENTATION:           Bench Mark disk                       VM#:         2751
AGENCY:                  US Coast & Geodetic Survey
                         (USC&GS)                                 IDB PID#:        
SETTING CLASSIFICATION:  Concrete filled pipe                  OPUS PID:        
LATITUDE:   39° 12.9' N (  39.21500)          LONGITUDE:  74° 38.9' W ( -74.64830)


The bench mark is a disk set in the top of a concrete-filled orangeburg pipe, 76
m (250 ft) SW of the south end of the Ocean Drive (Bay Avenue) bridge over
Corson Inlet, 8.38 m (27.5 ft) west of the centerline of Ocean Drive, 1.52 m
(5.0 ft) NW of Ace Power Pole #15726, and 0.15 m (0.5 ft) above ground level.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  7

                                                                                
Station ID: 8535101                         PUBLICATION DATE:  05/20/2004
Name:       CORSON INLET                                      
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.9' N (  39.21500)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 38.9' W ( -74.64830)


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


                         BENCH MARK STAMPING:  CI 3 1971
                         DESIGNATION:          853 5101 CI 3

MONUMENTATION:           Bench Mark disk                       VM#:         2752
AGENCY:                  US Coast & Geodetic Survey
                         (USC&GS)                                 IDB PID#:        
SETTING CLASSIFICATION:  Concrete filled pipe                  OPUS PID:        
LATITUDE:   39° 12.9' N (  39.21500)          LONGITUDE:  74° 38.9' W ( -74.64830)


The bench mark is a disk set in top of a concrete-filled orangeburg pipe, 144 m
(473 ft) SW of the south end of the Ocean Drive (Bay Avenue) bridge over Corson
Inlet, 6 m (21 ft)east of the centerline of Ocean Drive, 0.76 m (2.5 ft) NE of
USGG utility pole #251, and 0.15 m (0.5 ft) above ground level.



                         BENCH MARK STAMPING:  5101 D 1977
                         DESIGNATION:          853 5101 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2753
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2409
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   39° 13.5' N (  39.22500)          LONGITUDE:  74° 38.4' W ( -74.64000)


The bench mark is a disk located near the intersection of Bay Avenue and 56th
Street, 0.2 km (0.1 mi) NE of bench mark 5101 E 1977, 31.76 m (104.2 ft) SW of
the SW corner of House NO. 5545 Bay Avenue (a 2-story frame house), 9.66 m (31.7
ft) south of the SE corner of a steel catch basin, 9 m (30 ft) SE of the
centerline of Bay Avenue and 1.68 m (5.5 ft) NE of wood utility pole #211.  The
bench mark is set 6 cm (0.2 ft) below ground level, crimped to the top of a
galvanized 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  7

                                                                                
Station ID: 8535101                         PUBLICATION DATE:  05/20/2004
Name:       CORSON INLET                                      
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.9' N (  39.21500)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 38.9' W ( -74.64830)


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


                         BENCH MARK STAMPING:  5101 E 1977
                         DESIGNATION:          853 5101 E TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2754
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2408
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   39° 13.5' N (  39.22500)          LONGITUDE:  74° 38.3' W ( -74.63830)


The bench mark is a disk located near the intersection of Haven Avenue and 56th
Street, 29.20 m (95.8 ft) SW of the SW corner of House NO.5545 Haven Avenue,
15.33 m (50.3 ft) south of the SE corner of a catch basin, 15.03 m (49.3 ft) SW
of the SW corner of a second steel catch basin, 12.44 m (40.8 ft) NE of the
south end of a 0.76 m (2.5 ft) diameter steel corrugated culvert pipe, and 1.74
m (5.7 ft) south of the wood blockage fence at the south end of Haven Avenue. 
The bench mark is set 6 cm (0.2 ft) below ground level, crimped to the top of a
galvanized steel rod driven 15.2 m (50 ft), and encased in a PVC pipe and
concrete kickblock.



                         BENCH MARK STAMPING:  5101 F 1977
                         DESIGNATION:          853 5101 F TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2755
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2407
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   39° 13.2' N (  39.22000)          LONGITUDE:  74° 38.6' W ( -74.64330)


The bench mark is a disk located 0.3 km (0.2 mi) NE of the NE end of the Bay
Avenue bridge over Corson Inlet, 42 m (138 ft) NE of wood utility pole #5238 on
the west side of Bay Avenue, 19.99 m (65.6 ft) NE of the steel guard rail
alongside Bay Avenue, 7.53 m (24.7 ft) SE of the centerline of Bay Avenue, and
2.01 m (6.6 ft) NW of wood utility pole #228.  The bench mark is set 6 cm (0.2
ft) below ground level, crimped to the top of a galvanized 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  5 of  7

                                                                                
Station ID: 8535101                         PUBLICATION DATE:  05/20/2004
Name:       CORSON INLET                                      
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.9' N (  39.21500)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 38.9' W ( -74.64830)


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


                         BENCH MARK STAMPING:  5101 G 1977
                         DESIGNATION:          853 5101 G TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2756
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2405
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   39° 13.1' N (  39.21830)          LONGITUDE:  74° 38.8' W ( -74.64630)


The bench mark is a disk located 0.2 km (0.1 mi) NE of the NE end of the Bay
Avenue bridge over Corson Inlet, 35 m (115 ft) SW of wood utility pole #BT 235,
16.34 m (53.6 ft) SE of wood utility pole #05242, 7.47 m (24.5 ft) SE of the
centerline of Bay Avenue, and 3.72 m (12.2 ft) NE of wood utility pole #236. 
The bench mark is set 6 cm (0.2 ft) below ground level, crimped to the top of a
galvanized 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  6 of  7

                                                                                
Station ID: 8535101                         PUBLICATION DATE:  05/20/2004
Name:       CORSON INLET                                      
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.9' N (  39.21500)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 38.9' W ( -74.64830)


                            T I D A L   D A T U M S 


Tidal datums at CORSON INLET based on:

     LENGTH OF SERIES:      1 YEAR
     TIME PERIOD:           November 1977 - October 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 (10/14/1977)         =  2.181
     MEAN HIGHER HIGH WATER                     MHHW   =  1.325
     MEAN HIGH WATER                            MHW    =  1.207
     North American Vertical Datum              NAVD88 =  0.723
     MEAN SEA LEVEL                             MSL    =  0.635
     MEAN TIDE LEVEL                            MTL    =  0.628
     MEAN LOW WATER                             MLW    =  0.050
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/10/1978)         = -1.102

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     5101 H 1977                                 2.919    1.712
     CURVE 2 1966                                2.331    1.124
     CI 2 1971                                   3.355    2.148
     CI 3 1971                                   2.992    1.785
     5101 D 1977                                 2.082    0.875
     5101 E 1977                                 1.818    0.611
     5101 F 1977                                 2.330    1.123
     5101 G 1977                                 2.285    1.078


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  7

                                                                                
Station ID: 8535101                         PUBLICATION DATE:  05/20/2004
Name:       CORSON INLET                                      
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.9' N (  39.21500)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 38.9' W ( -74.64830)


                             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 8535101 CORSON INLET, NJ

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