Bench Mark Sheet for 8447416, Piney Point MA

Superseded Epoch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Small blue map location marker Unpublished bench mark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: 8447416                         PUBLICATION DATE:  04/21/2003
Name:       PINEY POINT, WINGS COVE                           
            MA
NOAA Chart: 13230                           Latitude:   41° 41.7' N (  41.69500)
USGS Quad:  ONSET                           Longitude:  70° 43.2' W ( -70.72000)


To reach tidal bench marks from Exit 20 on I-195 (State Route 105, Marion, MA),
proceed south on Route 105 for 1.1 km (0.7 mi) to the intersection of US Route
6, turn left and continue NE on US Route 6 for 2.1 km (1.3 mi), then turn right
on Point Road and continue SE for 4.0 km (2.5 mi), then turn left on Rogers
Avenue for 0.3 km (0.2 mi), then right on Holly Road and Piney Point Road for
1.0 km (0.6 mi), then left on Landing Road for 0.2 km (0.1 mi) to the Piney
Point Pier.  The bench marks are along Landing Road and Piney Point Road.  The
gauge was located on the NE corner of the pier.  NOTE: the first two digits of
the stamping on the marks set in 2000 are transposed from the first two digits
of the station number.


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


                 PRIMARY BENCH MARK STAMPING:  4716 A 2000
                         DESIGNATION:          844 7416 A

MONUMENTATION:           Tidal Station disk                    VM#:        16243
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Boulder                               OPUS PID:        
LATITUDE:   41° 41.7' N (  41.69500)          LONGITUDE:  70° 43.2' W ( -70.72000)


The primary bench mark is a disk set in a large boulder along the waterfront
south of the pier at the foot of Landing Road, 48.50 m (159.1 ft) east of the SE
corner of a small one level cottage on the south side of Landing Road, 38 m (125
ft) south of the SE corner of a small parking lot, 6 m (20 ft) WSW of the
vegetation line along the shoreline, and 0.45 m (1.5 ft) above ground level.

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

                                                                                
Station ID: 8447416                         PUBLICATION DATE:  04/21/2003
Name:       PINEY POINT, WINGS COVE                           
            MA
NOAA Chart: 13230                           Latitude:   41° 41.7' N (  41.69500)
USGS Quad:  ONSET                           Longitude:  70° 43.2' W ( -70.72000)


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


                         BENCH MARK STAMPING:  4716 B 2000
                         DESIGNATION:          844 7416 B

MONUMENTATION:           Tidal Station disk                    VM#:        16244
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Boulder                               OPUS PID:        
LATITUDE:   41° 41.7' N (  41.69500)          LONGITUDE:  70° 43.2' W ( -70.72000)


The bench mark is a disk set in a large boulder in front of No. 66 Piney Point
Road, the first house south of the intersection of Piney Point Road and Landing
Road, 27 m (89 ft) NW of power pole No. 17, 15.83 m (51.9 ft) SW of power pole
No. 16, 10.20 m (33.5 ft) WSW of the center of Piney Point Road, and 0.70 m (2.3
ft) above ground level.



                         BENCH MARK STAMPING:  4716 C 2000
                         DESIGNATION:          844 7416 C

MONUMENTATION:           Tidal Station disk                    VM#:        16245
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Boulder                               OPUS PID:        
LATITUDE:   41° 41.7' N (  41.69500)          LONGITUDE:  70° 43.2' W ( -70.72000)


The bench mark is a disk set in a large boulder just south of the driveway at
No. 80 Piney Point Road (house number in rock), 26.85 m (88.1 ft) south of power
pole No. 20, 11.40 m (37.4 ft) west of power pole No. 21, 6.10 m (20.0 ft) WSW
of the center of Piney Point Road, and 0.40 m (1.3 ft) above ground level.

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

                                                                                
Station ID: 8447416                         PUBLICATION DATE:  04/21/2003
Name:       PINEY POINT, WINGS COVE                           
            MA
NOAA Chart: 13230                           Latitude:   41° 41.7' N (  41.69500)
USGS Quad:  ONSET                           Longitude:  70° 43.2' W ( -70.72000)


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


                         BENCH MARK STAMPING:  4716 D 2000
                         DESIGNATION:          844 7416 D

MONUMENTATION:           Tidal Station disk                    VM#:        16246
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Boulder                               OPUS PID:        
LATITUDE:   41° 41.7' N (  41.69500)          LONGITUDE:  70° 43.2' W ( -70.72000)


The bench mark is a disk set in a boulder in the SE corner of the property at
No. 46 Piney Point Road, SE of the driveway, 17.31 m (56.8 ft) south of power
pole No. 298-12, 17.08 m (56.0 ft) NW of power pole No. 13, 4.80 m (15.8 ft) SW
of the center of Piney Point Road, and 0.35 m (1.1 ft) above ground level.



                         BENCH MARK STAMPING:  GRA 1977
                         DESIGNATION:          844 7416 GRA

MONUMENTATION:           Tidal Station disk                    VM#:        16247
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete walkway                      OPUS PID:        
LATITUDE:   41° 41.7' N (  41.69500)          LONGITUDE:  70° 43.2' W ( -70.72000)


The bench mark is a disk set flush on the east side of the concrete walkway
leading to Piney Point Pier, 13.08 m (42.91 ft) SSW of the SE corner of the
wooden pier, 12.52 m (41.1 ft) NNE of the south end of the walkway, and 0.11 m
(0.4 ft) west of the east edge of the walkway.

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

                                                                                
Station ID: 8447416                         PUBLICATION DATE:  04/21/2003
Name:       PINEY POINT, WINGS COVE                           
            MA
NOAA Chart: 13230                           Latitude:   41° 41.7' N (  41.69500)
USGS Quad:  ONSET                           Longitude:  70° 43.2' W ( -70.72000)


                            T I D A L   D A T U M S 


Tidal datums at PINEY POINT, WINGS COVE based on:

     LENGTH OF SERIES:      2 Months
     TIME PERIOD:           August 2000 - September 2000
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8452660 NEWPORT, NARRAGANSETT BAY


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

     MEAN HIGHER HIGH WATER                     MHHW   =  1.329
     MEAN HIGH WATER                            MHW    =  1.245
     MEAN TIDE LEVEL                            MTL    =  0.649
     MEAN SEA LEVEL                             MSL    =  0.579
     MEAN LOW WATER                             MLW    =  0.053
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     4716 A 2000                                 3.882    2.637
     4716 B 2000                                 9.914    8.669
     4716 C 2000                                 6.355    5.110
     4716 D 2000                                11.614   10.369
     GRA 1977                                    2.583    1.338


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

                                                                                
Station ID: 8447416                         PUBLICATION DATE:  04/21/2003
Name:       PINEY POINT, WINGS COVE                           
            MA
NOAA Chart: 13230                           Latitude:   41° 41.7' N (  41.69500)
USGS Quad:  ONSET                           Longitude:  70° 43.2' W ( -70.72000)


                             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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