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Bench Mark Sheet for 8535163, STRATHMERE, STRATHMERE BAY 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Superseded Epoch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Small blue map location marker Unpublished bench mark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  8

                                                                                
Station ID: 8535163                         PUBLICATION DATE:  05/12/2004
Name:       STRATHMERE, STRATHMERE BAY                        
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.0' N (  39.20000)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 39.4' W ( -74.65670)


To reach the tidal bench marks from the intersection of Whittier and
Commonwealth Avenues at the south end of the Ocean Drive bridge over Strathmere
Bay in Strathmere, proceed one block NW to Bayview Drive and the abandoned Coast
Guard station.  The bench marks are along Whittier and Commonwealth Avenues. 
The tide gage and staff were located on the NE side of the northeasternmost
Coast Guard pier, 24 m (80 ft) offshore of the bulkhead.


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


                 PRIMARY BENCH MARK STAMPING:  5163 A 1977
                         DESIGNATION:          853 5163 A TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2762
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2400
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID#: JU2400
LATITUDE:   39° 11.9' N (  39.19830)          LONGITUDE:  74° 39.3' W ( -74.65500)


The primary bench mark is a disk located at the intersection of Commonwealth
Avenue and Whittier Road, 15 m (49 ft) SW of wood utility pole #291, 12.13 m
(39.8 ft) NE of wood utility pole #3651 on the north edge of Whittier Road, 6.28
m (20.6 ft) east of the SE corner of house #101 Whittier Road (a 2-story frame
house), and 3.17 m (10.4 ft) NW of the NW curb of Commonwealth 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  8

                                                                                
Station ID: 8535163                         PUBLICATION DATE:  05/12/2004
Name:       STRATHMERE, STRATHMERE BAY                        
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.0' N (  39.20000)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 39.4' W ( -74.65670)


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


                         BENCH MARK STAMPING:  STRATHMERE 1932
                         DESIGNATION:          STRATHMERE

MONUMENTATION:           Triangulation Station disk            VM#:         2758
AGENCY:                  US Coast & Geodetic Survey
                         (USC&GS)                                 IDB PID#:  JU0394
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   39° 11.9' N (  39.19830)          LONGITUDE:  74° 39.4' W ( -74.65670)


The bench mark is a disk set in the top of a concrete monument under the
concrete apron at the west entrance to the Coast Guard garage, 46.76 m (153.4
ft) south of bench mark STRATHMERE NO 1 1932, and 11 m (36 ft) SW of the south
leg of the flagpole.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  8

                                                                                
Station ID: 8535163                         PUBLICATION DATE:  05/12/2004
Name:       STRATHMERE, STRATHMERE BAY                        
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.0' N (  39.20000)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 39.4' W ( -74.65670)


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


                         BENCH MARK STAMPING:  STRATHMERE NO 1 1932
                         DESIGNATION:          STRATHMERE RM 1

MONUMENTATION:           Reference Mark disk                   VM#:         2759
AGENCY:                  US Coast & Geodetic Survey
                         (USC&GS)                                 IDB PID#:  JU0393
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   39° 12.0' N (  39.20000)          LONGITUDE:  74° 39.4' W ( -74.65670)


The bench mark is set in a concrete monument at the NE corner of Bayview Drive
and Whittier Road, 21.49 m (70.5 ft) north and across Whittier Road from the NW
corner of the U.S. Coast Guard building, 6 m (20 ft) NE of the centerline of
Whittier Road, 5.33 m (17.5 ft) SE of the centerline of Bayview Drive, 0.30 m
(1.0 ft) NW of a street sign marker, and 6 cm (0.2 ft) above the sidewalk.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  8

                                                                                
Station ID: 8535163                         PUBLICATION DATE:  05/12/2004
Name:       STRATHMERE, STRATHMERE BAY                        
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.0' N (  39.20000)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 39.4' W ( -74.65670)


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


                         BENCH MARK STAMPING:  STRATHMERE NO 4 1932
                         DESIGNATION:          STRATHMERE RM 4

MONUMENTATION:           Reference Mark disk                   VM#:         2760
AGENCY:                  US Coast & Geodetic Survey
                         (USC&GS)                                 IDB PID#:  JU2401
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   39° 11.9' N (  39.19830)          LONGITUDE:  74° 39.4' W ( -74.65670)


The bench mark is a disk set in the top of a concrete monument, 32.25 m (105.8
ft) west of bench mark STRATHMERE 1932, 14 m (46 ft) SE of the east corner of
the Coast Guard building, 10 m (34 ft) SW of the centerline of Whittier Road, 5
m (16 ft) NE of the east corner of the concrete block foundation, 4 m (13 ft)
east of a witness post, and 1.43 m (4.7 ft) east of the east leg of the
flagpole.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  8

                                                                                
Station ID: 8535163                         PUBLICATION DATE:  05/12/2004
Name:       STRATHMERE, STRATHMERE BAY                        
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.0' N (  39.20000)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 39.4' W ( -74.65670)


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


                         BENCH MARK STAMPING:  U 57 1961
                         DESIGNATION:          U 57

MONUMENTATION:           Bench Mark disk                       VM#:         2761
AGENCY:                  US Coast & Geodetic Survey
                         (USC&GS)                                 IDB PID#:  JU0392
SETTING CLASSIFICATION:  Concrete abutment                     OPUS PID:        
LATITUDE:   39° 12.1' N (  39.20170)          LONGITUDE:  74° 39.4' W ( -74.65670)


The bench mark is a disk set in the east concrete abutment inside the guard rail
at the south end of the bridge over Strathmere Bay, 4 m (13 ft) east of the
centerline of Ocean Drive, 0.3 m (1 ft) west of the guard rail, and 0.3 m (1 ft)
above road level.



                         BENCH MARK STAMPING:  5163 B 1977
                         DESIGNATION:          853 5163 B TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2763
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2403
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   39° 12.0' N (  39.20000)          LONGITUDE:  74° 39.3' W ( -74.65500)


The bench mark is a disk located set in front of the Ocean Drive bridge sign,
122 m (400 ft) NE of bench mark 5163 A 1977, 45.51 m (149.3 ft) SW of the west
corner of house #400 Commonwealth Avenue (a 2-story wood frame house), 6.04 m
(19.8 ft) NW of the NW curb of Commonwealth Avenue, 4.51 m (14.8 ft) south of
wood utility pole #W27679, and 2 m (7 ft) east of the east edge of Ocean Drive
roadway.  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  8

                                                                                
Station ID: 8535163                         PUBLICATION DATE:  05/12/2004
Name:       STRATHMERE, STRATHMERE BAY                        
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.0' N (  39.20000)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 39.4' W ( -74.65670)


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


                         BENCH MARK STAMPING:  5163 C 1977
                         DESIGNATION:          853 5163 C TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2764
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2402
SETTING CLASSIFICATION:  Galvanized steel rod                  OPUS PID:        
LATITUDE:   39° 11.9' N (  39.19830)          LONGITUDE:  74° 39.3' W ( -74.65500)


The bench mark is a disk located set south of Whittier Road, 29.26 m (96.0 ft)
NE of the NE corner of the last house on Whittier Road next to the beach, 14.75
m (48.40 ft) NW of the bulkhead bordering the west side of the beach area, 9.81
m (32.2 ft) east of wood utility pole #3655, and 8.53 m (28.0 ft) NE of the
centerline of Whittier Road.  The bench mark is set level with the ground,
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  7 of  8

                                                                                
Station ID: 8535163                         PUBLICATION DATE:  05/12/2004
Name:       STRATHMERE, STRATHMERE BAY                        
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.0' N (  39.20000)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 39.4' W ( -74.65670)


                            T I D A L   D A T U M S 


Tidal datums at STRATHMERE, STRATHMERE BAY 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)         =  2.235
     MEAN HIGHER HIGH WATER                     MHHW   =  1.330
     MEAN HIGH WATER                            MHW    =  1.210
     North American Vertical Datum              NAVD88 =  0.735
     MEAN SEA LEVEL                             MSL    =  0.648
     MEAN TIDE LEVEL                            MTL    =  0.630
     MEAN LOW WATER                             MLW    =  0.051
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (01/10/1978)         = -1.398

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     5163 A 1977                                 2.137    0.927
     STRATHMERE 1932                             2.154    0.944
     STRATHMERE NO 1 1932                        2.326    1.116
     STRATHMERE NO 4 1932                        2.381    1.171
     U 57 1961                                   3.948    2.738
     5163 B 1977                                 2.425    1.215
     5163 C 1977                                 3.148    1.938


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  8 of  8

                                                                                
Station ID: 8535163                         PUBLICATION DATE:  05/12/2004
Name:       STRATHMERE, STRATHMERE BAY                        
            NJ
NOAA Chart: 12316                           Latitude:   39° 12.0' N (  39.20000)
USGS Quad:  SEA ISLE CITY                   Longitude:  74° 39.4' W ( -74.65670)


                             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 8535163 STRATHMERE, STRATHMERE BAY, NJ

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