Bench Mark Sheet for 8534212, CRAMERS BOATYARD, MULLICA RIVER 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Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8534212                         PUBLICATION DATE:  02/05/2004
Name:       CRAMERS BOATYARD, MULLICA RIVER                   
            NJ
NOAA Chart: 12316                           Latitude:   39° 32.9' N (  39.54830)
USGS Quad:  NEW GRETNA                      Longitude:  74° 27.7' W ( -74.46170)


To reach the tidal bench marks from the intersection of Main Street and Old New
York Road (Route 575) in Port Republic, proceed north on Old New York Road for
1.8 km (1.1 mi) to Chestnut Neck Road, then turn right and proceed NE on
Chestnut Neck Road (Route 575) for 2.9 km (1.8 mi) to Old New York Road, then
turn left and proceed north along Old New York Road to the Chestnut Neck Marina.
 The bench marks are located along Old New York Road.  The tide gage and staff
were located on the Chestnut Neck Marina Pier.


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


                 PRIMARY BENCH MARK STAMPING:  4212 D 1977
                         DESIGNATION:          853 4212 D TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2656
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:        
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   39° 32.9' N (  39.54830)          LONGITUDE:  74° 27.7' W ( -74.46170)


The primary bench mark is a disk located at the Chestnut Neck Marina, 16.95 m
(55.6 ft) east of the centerline of Old New York Road, 14.78 m (48.5 ft) south
of the southwesternmost corner of a 1-story wood garage building, and 0.94 m
(3.1 ft) SE of wood utility pole #P 34187.  The bench mark is 0.06 m (0.2 ft)
below ground level, crimped to a copper-coated 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  5

                                                                                
Station ID: 8534212                         PUBLICATION DATE:  02/05/2004
Name:       CRAMERS BOATYARD, MULLICA RIVER                   
            NJ
NOAA Chart: 12316                           Latitude:   39° 32.9' N (  39.54830)
USGS Quad:  NEW GRETNA                      Longitude:  74° 27.7' W ( -74.46170)


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


                         BENCH MARK STAMPING:  4212 E 1977
                         DESIGNATION:          853 4212 E TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2657
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2432
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID:        
LATITUDE:   39° 32.7' N (  39.54500)          LONGITUDE:  74° 27.7' W ( -74.46170)


The bench mark is a disk located along Old New York Road, 0.2 km (0.1 mi) south
of Bench Mark 4212 D 1977, 92 m (303 ft) NW of Bench Mark 4212 F 1977, 35.57 m
(116.7 ft) SW of wood utility pole #8-9, 15.03 m (49.3 ft) west of a wooden
fence corner, 9 m (31 ft) east of the centerline of Old New York Road, and 1.37
m (4.5 ft) east of a traffic reflector post.  The bench mark is 0.06 (0.2 ft)
below ground level, crimped to a copper-clad steel rod driven 15.2 m (50 ft),
and encased in a PVC pipe and concrete kickblock.



                         BENCH MARK STAMPING:  4212 F 1977
                         DESIGNATION:          853 4212 F TIDAL

MONUMENTATION:           Tidal Station disk                    VM#:         2658
AGENCY:                  National Ocean Survey (NOS)           IDB PID#:  JU2431
SETTING CLASSIFICATION:  Copper-clad steel rod                 OPUS PID#: JU2431
LATITUDE:   39° 32.7' N (  39.54500)          LONGITUDE:  74° 27.7' W ( -74.46170)


The bench mark is a disk located 61 m (200 ft) NE of Bench Mark F 8 1930 8.333,
31 m (101 ft) SW of wood utility pole #14605, 24.17 m (79.3 ft) NW of wood
utility pole #14604, and 4.39 m (14.4 ft) west of the centerline of the
bituminous paved road bordering the east side of a triangular park.  The bench
mark is 0.06 m (0.2 ft) below ground level, crimped to a copper-clad steel rod
driven 15.2 m (50), 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: 8534212                         PUBLICATION DATE:  02/05/2004
Name:       CRAMERS BOATYARD, MULLICA RIVER                   
            NJ
NOAA Chart: 12316                           Latitude:   39° 32.9' N (  39.54830)
USGS Quad:  NEW GRETNA                      Longitude:  74° 27.7' W ( -74.46170)


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


                         BENCH MARK STAMPING:  1852
                         DESIGNATION:          1852

MONUMENTATION:           Survey disk                           VM#:         2659
AGENCY:                  New Jersey Geological Survey (NJGS)   IDB PID#:  JU0120
SETTING CLASSIFICATION:  Concrete monument                     OPUS PID:        
LATITUDE:   39° 32.5' N (  39.54170)          LONGITUDE:  74° 27.9' W ( -74.46500)


The bench mark is a disk set in the top of a concrete monument along U.S.
Highway 9 (New York Highway), 0.2 km (0.1 mi) south of County Road 575, 15.54 m
(51.0 ft) west of and across U.S. Highway 9 from power pole #14094, 8.38 m (27.5
ft) WNW of the centerline of the U.S. Highway 9, and 2.74 m (9.0 ft) SW of cable
line pole #P-19356.

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

                                                                                
Station ID: 8534212                         PUBLICATION DATE:  02/05/2004
Name:       CRAMERS BOATYARD, MULLICA RIVER                   
            NJ
NOAA Chart: 12316                           Latitude:   39° 32.9' N (  39.54830)
USGS Quad:  NEW GRETNA                      Longitude:  74° 27.7' W ( -74.46170)


                            T I D A L   D A T U M S 


Tidal datums at CRAMERS BOATYARD, MULLICA RIVER based on:

     LENGTH OF SERIES:      7 MONTHS
     TIME PERIOD:           April 1978 - 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:

     MEAN HIGHER HIGH WATER                     MHHW   =  1.024
     MEAN HIGH WATER                            MHW    =  0.943
     MEAN SEA LEVEL                             MSL    =  0.530
     North American Vertical Datum              NAVD88 =  0.522
     MEAN TIDE LEVEL                            MTL    =  0.495
     MEAN LOW WATER                             MLW    =  0.047
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     4212 D 1977                                 1.982    1.039
     4212 E 1977                                 2.342    1.399
     4212 F 1977                                 2.346    1.403
     1852                                        2.496    1.553


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

                                                                                
Station ID: 8534212                         PUBLICATION DATE:  02/05/2004
Name:       CRAMERS BOATYARD, MULLICA RIVER                   
            NJ
NOAA Chart: 12316                           Latitude:   39° 32.9' N (  39.54830)
USGS Quad:  NEW GRETNA                      Longitude:  74° 27.7' W ( -74.46170)


                             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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