Bench Mark Sheet for 8546252, Bridesburg PA

Superseded Epoch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Small blue map location marker Unpublished bench mark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  6

                                                                                
Station ID: 8546252                         PUBLICATION DATE:  03/20/2017
Name:       BRIDESBURG                                        
            PA
NOAA Chart: 12313                           Latitude:   39° 59.0' N (  39.98330)
USGS Quad:  CAMDEN                          Longitude:  75°  4.5' W ( -75.07500)


To reach the station from the intersection of Aramingo Ave and E Venango Ave in
Port Richmond, PA, proceed southeast on E Venango Ave for 1.64 km (1.0 mi) to
the intersection with N Delaware Ave, then northeast on N Delaware Ave for 0.1
km (0.06 mi) to the entrance of Tioga Marine Terminal. The bench marks are
located along the south side of N Delaware Ave and within the terminal. The tide
gauge is located on the first dolphin east of the main dock within the terminal.


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


                 PRIMARY BENCH MARK STAMPING:  6252 G 2015
                         DESIGNATION:          854 6252 G

MONUMENTATION:           Flange-encased Rod                    VM#:        21822
AGENCY:                  NOS                                   IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID#: BBDZ58
LATITUDE:   39° 59.0' N (  39.98308)          LONGITUDE:  75°  5.0' W ( -75.08253)


The primary bench mark is a deep rod mark located along the S side of N Delaware
Avenue in Port Richmond PA, 44.5 m (146 ft) NE of the NE corner of the green
electrical box 678 on S side of Delaware Avenue, 8.2 m (27 ft) N of an orange
survey mark witness post affixed to the chain link fence for Tioga Marine
Terminal, and 5.0 m (16.5 ft) S of the centerline of Delaware Avenue, recessed 6
cm (2 inches) below grade, encased in a 5 inch NOS logo cap.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  6

                                                                                
Station ID: 8546252                         PUBLICATION DATE:  03/20/2017
Name:       BRIDESBURG                                        
            PA
NOAA Chart: 12313                           Latitude:   39° 59.0' N (  39.98330)
USGS Quad:  CAMDEN                          Longitude:  75°  4.5' W ( -75.07500)


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


                         BENCH MARK STAMPING:  6252 A 2015
                         DESIGNATION:          854 6252 A

MONUMENTATION:           Tidal Station disk                    VM#:        21823
AGENCY:                  NOS                                   IDB PID#:        
SETTING CLASSIFICATION:  Concrete dolphin                      OPUS PID:        
LATITUDE:   39° 58.8' N (  39.97972)          LONGITUDE:  75°  4.8' W ( -75.07950)


The bench mark is a brass disk surface mark located in the Tioga Marine Terminal
on the first concrete dolphin east of the main dock, located 6.55 m (21.5 ft)
north of the southern edge of the dolphin, 0.61 m (2 ft) east of the western
edge of the dolphin, and 0.3 m (1.0 ft) south of the northern edge of the
dolphin, set flush with the concrete surface.



                         BENCH MARK STAMPING:  6252 B 2015
                         DESIGNATION:          854 6252 B

MONUMENTATION:           Tidal Station disk                    VM#:        21824
AGENCY:                  NOS                                   IDB PID#:        
SETTING CLASSIFICATION:  Concrete                              OPUS PID:        
LATITUDE:   39° 58.8' N (  39.97961)          LONGITUDE:  75°  4.8' W ( -75.07997)


The bench mark is a brass disk surface mark located in the Tioga Marine Terminal
on the southeastern edge of the main dock, 3.65 m (12.0 ft) east of the eastern
end of the crane track, 0.76 m (2.5 ft) south of the southern handrail for the
catwalk leading to the tide station, and 0.60 m (2 ft) north of the southern
edge of the main pier, set flush with the concrete surface.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  6

                                                                                
Station ID: 8546252                         PUBLICATION DATE:  03/20/2017
Name:       BRIDESBURG                                        
            PA
NOAA Chart: 12313                           Latitude:   39° 59.0' N (  39.98330)
USGS Quad:  CAMDEN                          Longitude:  75°  4.5' W ( -75.07500)


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


                         BENCH MARK STAMPING:  6252 C 2015
                         DESIGNATION:          854 6252 C

MONUMENTATION:           Tidal Station disk                    VM#:        21825
AGENCY:                  NOS                                   IDB PID#:        
SETTING CLASSIFICATION:  Concrete seawall                      OPUS PID:        
LATITUDE:   39° 58.8' N (  39.98031)          LONGITUDE:  75°  4.8' W ( -75.08044)


The bench mark is a brass disk surface mark located in the Tioga Marine Terminal
on the eastern edge of the main dock, 90 m (295 ft) north of the northern
handrail for the catwalk leading to the tide station, 23.5 m (77 ft) NE of the
NE corner of the security shack on the eastern side of the main dock, and 0.6 m
(2 ft) west of the eastern edge of the main pier, set flush with the concrete
surface.



                         BENCH MARK STAMPING:  6252 D 2015
                         DESIGNATION:          854 6252 D

MONUMENTATION:           Tidal Station disk                    VM#:        21826
AGENCY:                  NOS                                   IDB PID#:        
SETTING CLASSIFICATION:  Concrete foundation                   OPUS PID:        
LATITUDE:   39° 58.9' N (  39.98211)          LONGITUDE:  75°  5.0' W ( -75.08339)


The bench mark is a brass disk surface mark located in the Tioga Marine Terminal
on the SW support foundation of the marine terminal maintenance building, 57.6 m
(189 ft) north of the center of the light pole number (2)80714, 48.0 m (157.8
ft) SW of the NE support column for the maintenance building, 40.6 m (133.3 ft)
SE of the northern fence line for the Tioga Marine Terminal, and 0.5 m (1.5 ft)
NE of the SE support column for the maintenance building, set flush with the
concrete foundation surface.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  6

                                                                                
Station ID: 8546252                         PUBLICATION DATE:  03/20/2017
Name:       BRIDESBURG                                        
            PA
NOAA Chart: 12313                           Latitude:   39° 59.0' N (  39.98330)
USGS Quad:  CAMDEN                          Longitude:  75°  4.5' W ( -75.07500)


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


                         BENCH MARK STAMPING:  6252 E 2015
                         DESIGNATION:          854 6252 E

MONUMENTATION:           Flange-encased Rod                    VM#:        21827
AGENCY:                  NOS                                   IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   39° 58.9' N (  39.98083)          LONGITUDE:  75°  5.2' W ( -75.08706)


The bench mark is a deep rod mark located along the south side of North Delaware
Avenue in Port Richmond, PA, 39 m (128 ft) SSW of the 'crosswalk ahead' sign on
the south side of Delaware Avenue, 9.44 m (31 ft) north of the orange survey
witness post affixed to the chain link fence for Tioga Marine Terminal, and 9.40
m (31 ft) south of the centerline for Delaware Ave, recessed 6 cm (2 inches)
below grade, encased in a 5 inch NOS logo cap.



                         BENCH MARK STAMPING:  6252 F 2015
                         DESIGNATION:          854 6252 F

MONUMENTATION:           Flange-encased Rod                    VM#:        21828
AGENCY:                  NOS                                   IDB PID#:        
SETTING CLASSIFICATION:  Stainless steel rod                   OPUS PID:        
LATITUDE:   39° 58.9' N (  39.98122)          LONGITUDE:  75°  5.1' W ( -75.08583)


The bench mark is a deep rod mark located along the south side of North Delaware
Avenue in Port Richmond, PA, 9.44 m (31 ft) north of the orange survey witness
post affixed to the chain link fence for Tioga Marine Terminal, 9.30 m (30 ft)
south of the centerline for Delaware Avenue, and 5.48 m (18 ft) SW of the
'bicycle yield to pedestrians' sign on the south side of Delaware Ave, recessed
6 cm (2 inches) below grade, encased in a 5 inch nos logo cap.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  6

                                                                                
Station ID: 8546252                         PUBLICATION DATE:  03/20/2017
Name:       BRIDESBURG                                        
            PA
NOAA Chart: 12313                           Latitude:   39° 59.0' N (  39.98330)
USGS Quad:  CAMDEN                          Longitude:  75°  4.5' W ( -75.07500)


                            T I D A L   D A T U M S 


Tidal datums at BRIDESBURG based on:

     LENGTH OF SERIES:      9 MONTHS
     TIME PERIOD:           February 2016 - October 2016
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8545240 PHILADELPHIA (USCG STA.), DELAWARE RIVER


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

     MEAN HIGHER HIGH WATER                     MHHW   =  2.124
     MEAN HIGH WATER                            MHW    =  2.004
     MEAN SEA LEVEL                             MSL    =  1.095
     MEAN TIDE LEVEL                            MTL    =  1.031
     MEAN LOW WATER                             MLW    =  0.058
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     6252 G 2015                                 4.056    2.052
     6252 A 2015                                 4.500    2.496
     6252 B 2015                                 3.769    1.765
     6252 C 2015                                 3.784    1.780
     6252 D 2015                                 4.401    2.397
     6252 E 2015                                 3.775    1.771
     6252 F 2015                                 3.255    1.251


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  6

                                                                                
Station ID: 8546252                         PUBLICATION DATE:  03/20/2017
Name:       BRIDESBURG                                        
            PA
NOAA Chart: 12313                           Latitude:   39° 59.0' N (  39.98330)
USGS Quad:  CAMDEN                          Longitude:  75°  4.5' W ( -75.07500)


                             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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