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Bench Mark Sheet for 8442417, BEVERLY, BEVERLY HARBOR 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Superseded Epoch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Small blue map location marker Unpublished bench mark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  7

                                                                                
Station ID: 8442417                         PUBLICATION DATE:  02/05/2004
Name:       BEVERLY, BEVERLY HARBOR                           
            MA
NOAA Chart: 13275                           Latitude:   42° 32.4' N (  42.54000)
USGS Quad:  SALEM                           Longitude:  70° 53.2' W ( -70.88670)


To reach the tidal bench marks from Beverly City Hall at 191 Cabot Street (State
Route 22), proceed south on Cabot Street for 1.0 km (0.6 mi) to State Route 127,
then proceed south on Route 127 for 0.2 km (0.1 mi) to Beverly Harbor Center. 
The bench marks are at the Harbor Center, the adjacent McDonald's restaurant,
the Essex Street bridge, and the nearby railroad. The tide station was on the
west side of the Beverly Harbor Center fishing pier.


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


                 PRIMARY BENCH MARK STAMPING:  2417 A 1992
                         DESIGNATION:          844 2417 A

MONUMENTATION:           Tidal Station disk                    VM#:        11652
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete sea wall                     OPUS PID:        
LATITUDE:   42° 32.4' N (  42.54000)          LONGITUDE:  70° 53.2' W ( -70.88670)


The primary bench mark is a disk set in the concrete sea wall at the foot of the
Beverly Harbor Center pier, 22.25 m (73.0 ft) west of the NW corner of the pier,
7.22 m (23.7 ft) SSE of the SW pole supporting the back of the Harbormaster
building, and 0.40 m (1.3 ft) north of a light pole.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  7

                                                                                
Station ID: 8442417                         PUBLICATION DATE:  02/05/2004
Name:       BEVERLY, BEVERLY HARBOR                           
            MA
NOAA Chart: 13275                           Latitude:   42° 32.4' N (  42.54000)
USGS Quad:  SALEM                           Longitude:  70° 53.2' W ( -70.88670)


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


                         BENCH MARK STAMPING:  2417 B 1992
                         DESIGNATION:          844 2417 B

MONUMENTATION:           Tidal Station disk                    VM#:        11653
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete abutment                     OPUS PID:        
LATITUDE:   42° 32.4' N (  42.54000)          LONGITUDE:  70° 53.2' W ( -70.88670)


The bench mark is a disk set in the NW concrete abutment of the railroad bridge
over Beverly Harbor, 107 m (351 ft) SW of the centerline of the Congress Street
railroad crossing, 19.66 m (64.5 ft) NE of the first light pole SW of the NW
corner of the railroad bridge, and 0.24 m (0.8 ft) SW of the NE end of the
abutment.



                         BENCH MARK STAMPING:  2417 C 1992
                         DESIGNATION:          844 2417 C

MONUMENTATION:           Tidal Station disk                    VM#:        11654
AGENCY:                  National Ocean Service (NOS)          IDB PID#:        
SETTING CLASSIFICATION:  Concrete base                         OPUS PID:        
LATITUDE:   42° 32.4' N (  42.54000)          LONGITUDE:  70° 53.2' W ( -70.88670)


The bench mark is a disk set in the concrete base of a powerline tower east of
the railroad tracks and just north of the Congress Street railroad crossing,
20.63 m (67.7 ft) ENE of a fire hydrant at the NW quadrant of the crossing,
13.59 m (44.6 ft) ESE of the SE corner of a control box on the west side of the
tracks, and 9.91 m (32.5 ft) NW of the railroad signal at the SE corner of the
crossing.

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

                                                                                
Station ID: 8442417                         PUBLICATION DATE:  02/05/2004
Name:       BEVERLY, BEVERLY HARBOR                           
            MA
NOAA Chart: 13275                           Latitude:   42° 32.4' N (  42.54000)
USGS Quad:  SALEM                           Longitude:  70° 53.2' W ( -70.88670)


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


                         BENCH MARK STAMPING:  5 1936
                         DESIGNATION:          844 2417 TIDAL 5

MONUMENTATION:           Tidal Station disk                    VM#:        11655
AGENCY:                  US Coast & Geodetic Survey
                         (USC&GS)                                 IDB PID#:        
SETTING CLASSIFICATION:  Concrete retaining wall               OPUS PID:        
LATITUDE:   42° 32.4' N (  42.54000)          LONGITUDE:  70° 53.2' W ( -70.88670)


The bench mark is a disk set in the NE corner of the concrete retaining wall of
the Essex Street Bridge at the west end of Cabot Street, 23 m (75 ft) south of
the NE end of a green rail fence on the east side of the bridge, and 11 m (35
ft) SSE of the first light pole on the NE end of the bridge.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  7

                                                                                
Station ID: 8442417                         PUBLICATION DATE:  02/05/2004
Name:       BEVERLY, BEVERLY HARBOR                           
            MA
NOAA Chart: 13275                           Latitude:   42° 32.4' N (  42.54000)
USGS Quad:  SALEM                           Longitude:  70° 53.2' W ( -70.88670)


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


                         BENCH MARK STAMPING:   
                         DESIGNATION:          844 2417 MGS 4935
                         ALIAS:                NO STAMPING 1

MONUMENTATION:           Rivet                                 VM#:        11656
AGENCY:                  Massachusetts Geodetic Survey (MGS)   IDB PID#:        
SETTING CLASSIFICATION:  Concrete retaining wall               OPUS PID:        
LATITUDE:   42° 32.4' N (  42.54000)          LONGITUDE:  70° 53.2' W ( -70.88670)


The bench mark is a disk set in the concrete retaining wall on the west side of
the McDonalds parking lot on Cabot Street, 41.76 m (137.0 ft) south of the
centerline of Cabot Street, 21.12 m (69.3 ft) SW of the NW corner of the
McDonalds restaurant, and 16.95 m (55.6 ft) NW of the SW corner of the
restaurant.  Note: The bench mark is designated by Massachusetts Geodetic Survey
as #4935.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  7

                                                                                
Station ID: 8442417                         PUBLICATION DATE:  02/05/2004
Name:       BEVERLY, BEVERLY HARBOR                           
            MA
NOAA Chart: 13275                           Latitude:   42° 32.4' N (  42.54000)
USGS Quad:  SALEM                           Longitude:  70° 53.2' W ( -70.88670)


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


                         BENCH MARK STAMPING:   
                         DESIGNATION:          844 2417 MGS 4936
                         ALIAS:                NO STAMPING 2

MONUMENTATION:           Rivet                                 VM#:        11657
AGENCY:                  Massachusetts Geodetic Survey (MGS)   IDB PID#:        
SETTING CLASSIFICATION:  Concrete retaining wall               OPUS PID:        
LATITUDE:   42° 32.4' N (  42.54000)          LONGITUDE:  70° 53.2' W ( -70.88670)


The bench mark is a disk set in the concrete retaining wall on the south side of
the McDonalds parking lot on Cabot Street, 37.73 m (123.8 ft) SE of bench mark
844 2417 MGS 4935, 20.73 m (68.0 ft) south of the SE corner of the McDonalds
restaurant, 15.67 m (51.4 ft) SE of the NE corner of a brick trash receptacle,
and 0.3 m (1.0 ft) west of utility pole #5688.  Note: The benchmark is
designated by Massachusetts Geodetic Survey as #4936.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  7

                                                                                
Station ID: 8442417                         PUBLICATION DATE:  02/05/2004
Name:       BEVERLY, BEVERLY HARBOR                           
            MA
NOAA Chart: 13275                           Latitude:   42° 32.4' N (  42.54000)
USGS Quad:  SALEM                           Longitude:  70° 53.2' W ( -70.88670)


                            T I D A L   D A T U M S 


Tidal datums at BEVERLY, BEVERLY HARBOR based on:

     LENGTH OF SERIES:      3 MONTHS
     TIME PERIOD:           July 1992 - September 1992
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:  8443970 BOSTON, BOSTON HARBOR


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

     MEAN HIGHER HIGH WATER                     MHHW   =  2.963
     MEAN HIGH WATER                            MHW    =  2.826
     MEAN SEA LEVEL                             MSL    =  1.476
     MEAN TIDE LEVEL                            MTL    =  1.464
     MEAN LOW WATER                             MLW    =  0.103
     MEAN LOWER LOW WATER                       MLLW   =  0.000

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     2417 A 1992                                 4.060    1.234
     2417 B 1992                                 7.197    4.371
     2417 C 1992                                 7.787    4.961
     5 1936                                      5.926    3.100
     844 2417 MGS 4935                           5.116    2.290
     844 2417 MGS 4936                           4.657    1.832


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

                                                                                
Station ID: 8442417                         PUBLICATION DATE:  02/05/2004
Name:       BEVERLY, BEVERLY HARBOR                           
            MA
NOAA Chart: 13275                           Latitude:   42° 32.4' N (  42.54000)
USGS Quad:  SALEM                           Longitude:  70° 53.2' W ( -70.88670)


                             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 8442417 BEVERLY, BEVERLY HARBOR, MA

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