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Bench Mark Sheet for 8656483, Beaufort NC

Superseded Epoch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Small blue map location marker Unpublished bench mark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  9

                                                                                
Station ID: 8656483                                PUBLICATION DATE:  05/06/2016
Name:       BEAUFORT, DUKE MARINE LAB                         
            NC
NOAA Chart: 11547                                  Latitude:         34° 43.2' N
USGS Quad:  BEAUFORT                               Longitude:        76° 40.2' W


To reach the tidal bench marks from Moorehead City, from the U.S. Highway 70
bridge over Beaufort Channel west of Beaufort, proceed west on U.S. Highway 70
for 0.3 km (0.2 mi) to the road leading to Pivers Island, turn left and go 0.6
km (0.4 mi) to Duke Marine Laboratories.  The bench marks are along the road
leading to the laboratories and on the grounds. The gages are at the Duke Marine
Lab dock.


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


                 PRIMARY BENCH MARK STAMPING:  NO 11 1964
                         DESIGNATION:          865 6483 NO 11

MONUMENTATION:           Tidal Station disk                        VM#:      547
AGENCY:                  US Coast and Geodetic Survey (USC&GS)     PID#:  AI9505
SETTING CLASSIFICATION:  Concrete base


The primary bench mark is a disk set flush in the SE corner of the SE concrete
base of a flag and wind gage tower on the National Marine Fisheries Service
(NMFS) grounds, 18.59 m (61.0 ft) SE of the SE corner of a maintenance shop,
5.21 m (17.1 ft) east of the SE corner of a concrete tank, 2.01 m (6.6 ft) north
of the NW corner of the NMFS Seawater Lab, and 0.30 m (1 ft) SE of the SE metal
leg of the tower.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  2 of  9

                                                                                
Station ID: 8656483                                PUBLICATION DATE:  05/06/2016
Name:       BEAUFORT, DUKE MARINE LAB                         
            NC
NOAA Chart: 11547                                  Latitude:         34° 43.2' N
USGS Quad:  BEAUFORT                               Longitude:        76° 40.2' W


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


                         BENCH MARK STAMPING:  NO 10 1964
                         DESIGNATION:          865 6483 NO 10

MONUMENTATION:           Tidal Station disk                        VM#:      546
AGENCY:                  US Coast and Geodetic Survey (USC&GS)     PID#:  AI9506
SETTING CLASSIFICATION:  Concrete sea wall


The bench mark is a disk set in the top of the sea wall at the National Marine
Fisheries Service on Pivers Island, 23.77 m (78.0 ft) NE of the center of a flag
tower, 13.26 m (43.5 ft) SE of the south corner of a pier, and 10.00 m (32.8 ft)
east of utility pole No. 8146.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  3 of  9

                                                                                
Station ID: 8656483                                PUBLICATION DATE:  05/06/2016
Name:       BEAUFORT, DUKE MARINE LAB                         
            NC
NOAA Chart: 11547                                  Latitude:         34° 43.2' N
USGS Quad:  BEAUFORT                               Longitude:        76° 40.2' W


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


                         BENCH MARK STAMPING:  X 112 1963
                         DESIGNATION:          X 112

MONUMENTATION:           Bench Mark disk                           VM#:      549
AGENCY:                  US Coast and Geodetic Survey (USC&GS)     PID#:  EA0107
SETTING CLASSIFICATION:  Concrete wing wall


The bench mark is a disk set in the SW concrete wingwall at the SW corner of the
U.S. Highway 70 bridge over Beaufort Channel, 25.30 m (83.0 ft) north of the
north rail of the Beaufort and Morehead Railroad, 6.55 m (21.5 ft)  south of the
centerline of the highway, 0.70 m (2.3 ft) south of the south face of the guard
rail, and 0.30 m (1.0 ft) above the road.



                         BENCH MARK STAMPING:  6483 A 1996
                         DESIGNATION:          865 6483 A

MONUMENTATION:           Tidal Station disk                        VM#:    13740
AGENCY:                  National Ocean Service (NOS)              PID#:  DJ9297
SETTING CLASSIFICATION:  Rock outcrop


The bench mark is a disk set in a rock outcrop with a brass plaque with the
inscription Duke University Marine Laboratory, at the dormitories and dining
hall at Duke Marine Labs, 20.03 m (65.7 ft) north of the NW corner of the
administration office, 17.68 m (58.0 ft) east of the east face of the Dining
Hall Building, and 5.18 m (17.0 ft) west of the center of another rock outcrop.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  4 of  9

                                                                                
Station ID: 8656483                                PUBLICATION DATE:  05/06/2016
Name:       BEAUFORT, DUKE MARINE LAB                         
            NC
NOAA Chart: 11547                                  Latitude:         34° 43.2' N
USGS Quad:  BEAUFORT                               Longitude:        76° 40.2' W


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


                         BENCH MARK STAMPING:  6483 B 1996
                         DESIGNATION:          865 6483 B

MONUMENTATION:           Tidal Station disk                        VM#:    13741
AGENCY:                  National Ocean Service (NOS)              PID#:  DJ9294
SETTING CLASSIFICATION:  Stainless steel rod


The bench mark is a disk located in a grassy area west of the administration
building on the property of the National Marine Fisheries Service (NMFS), 32.16
m (105.5 ft) east of the centerline of the Pivers Island Road, 24.78 m (81.3 ft)
south of the south edge of the drive leading to the administration building,
20.67 m (67.8 ft) west of the SE corner of the administration building, 17.79 m
(58.4 ft) NE of a red fire hydrant, and 6.63 m (21.8 ft) west of a witness post
nailed to a yeopon tree.  The bench mark is 9 cm (0.3 ft) below ground, crimped
to the top of a stainless steel rod driven 14.6 m (48 ft) to refusal, and
encased in a 5-inch PVC pipe and concrete kickblock.



                         BENCH MARK STAMPING:  6483 E 1998
                         DESIGNATION:          865 6483 E TIDAL

MONUMENTATION:           Flange-encased Rod                        VM#:    13975
AGENCY:                  National Ocean Service (NOS)              PID:         
SETTING CLASSIFICATION:  Stainless steel rod in sleeve


The bench mark is a flange-encased rod located along US Highway 70 near the
entrance road to Pivers Island and Duke Marine Lab, 22.00 m (72.2 ft) east of
the centerline of the entrance road, 19.10 m (62.7 ft) south of the south edge
of US Highway 70, and 6.85 m (22.5 ft) north of the north rail of the old train
tracks. The datum point is set 9 cm (0.3 ft) below ground, being the top of a
stainless steel rod driven 21.3 m (70 ft) to refusal, and encased in a 5-inch
NOS logo cap.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  5 of  9

                                                                                
Station ID: 8656483                                PUBLICATION DATE:  05/06/2016
Name:       BEAUFORT, DUKE MARINE LAB                         
            NC
NOAA Chart: 11547                                  Latitude:         34° 43.2' N
USGS Quad:  BEAUFORT                               Longitude:        76° 40.2' W


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


                         BENCH MARK STAMPING:  6483 F 1999
                         DESIGNATION:          865 6483 F TIDAL

MONUMENTATION:           Tidal Station disk                        VM#:    15891
AGENCY:                  National Ocean Service (NOS)              PID#:  DJ9295
SETTING CLASSIFICATION:  Concrete bulkhead


The bench mark is a disk set flush in the top of a concrete and sheetpile
bulkhead located on the east side of the laboratory property, 24 m (79 ft) west
of the east face of the concrete bulkhead, 21.71 m (71.2 ft) NE of the NE corner
of the cedar shack building, 6.00 m (19.7 ft) ESE of the SE corner of the
maintenance building, 0.69 m (2.3 ft) south of the south face of the concrete
pier, and 0.23 m (0.75 ft) east of the west face of the concrete bulkhead.



                         BENCH MARK STAMPING:  6483 G 1999
                         DESIGNATION:          865 6483 G TIDAL

MONUMENTATION:           Tidal Station disk                        VM#:    15892
AGENCY:                  National Ocean Service (NOS)              PID#:  DJ9296
SETTING CLASSIFICATION:  Concrete bulkhead


The bench mark is a disk set flush in the top of a concrete and sheetpile
bulkhead, 32.42 m (106.4 ft) south of the northernmost end of bulkhead, 31.00 m
(101.7 ft) NE of the SE corner of the Cartography Office, 29.54 m (96.9 ft) SE
of Dorm No.1, 11.93 m (39.1 ft) north of the angle in the bulkhead, 0.45 m (1.5
ft) west of the east face of the bulkhead, and 0.26 m (0.85 ft) east of the west
face of the concrete bulkhead.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  6 of  9

                                                                                
Station ID: 8656483                                PUBLICATION DATE:  05/06/2016
Name:       BEAUFORT, DUKE MARINE LAB                         
            NC
NOAA Chart: 11547                                  Latitude:         34° 43.2' N
USGS Quad:  BEAUFORT                               Longitude:        76° 40.2' W


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


                         BENCH MARK STAMPING:  6483 J 2009
                         DESIGNATION:          865 6483 J

MONUMENTATION:           Tidal Station disk                        VM#:    19576
AGENCY:                  National Ocean Survey/Service (NOS)       PID:         
SETTING CLASSIFICATION:  Concrete wing wall


The bench mark is set flush in the SW wing wall of the Pivers Island bridge,
15.2 m (49.9 ft) west of a power pole number NOK44, 5.85 m (19.19 ft) east of
the centerline of Pivers Island road, 1.57 m (5.15 ft) south of the south end of
the wing wall, and 0.91 m (2.99 ft) above the road.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  7 of  9

                                                                                
Station ID: 8656483                                PUBLICATION DATE:  05/06/2016
Name:       BEAUFORT, DUKE MARINE LAB                         
            NC
NOAA Chart: 11547                                  Latitude:         34° 43.2' N
USGS Quad:  BEAUFORT                               Longitude:        76° 40.2' W


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


                         BENCH MARK STAMPING:   
                         DESIGNATION:          NCCOS BEAUFORT

MONUMENTATION:           DJ                                        VM#:    20547
AGENCY:                  NOAA                                      PID#:  DG9239
SETTING CLASSIFICATION:  


The bench mark is located 27.7 m (91.0 ft) east-southeast of a single phase
utility pole marked NKC63, 20.7 m (67.8 ft) south-southeast of the easternmost
of two yellow plastic bollards protecting a water meter,  16.2 m (53.3 ft) east
northeast of a fire hydrant, and 12.3 m (40.4 ft) east of the center of gravel
road. The bench marks is a 0.65 ft diameter NOAA commemorative disk set in a 3ft
X 3ft X 1ft granite monument on a 5.6 ft x 3.4 ft base and is set 2 feet deep
and anchored with rebar.

                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  8 of  9

                                                                                
Station ID: 8656483                                PUBLICATION DATE:  05/06/2016
Name:       BEAUFORT, DUKE MARINE LAB                         
            NC
NOAA Chart: 11547                                  Latitude:         34° 43.2' N
USGS Quad:  BEAUFORT                               Longitude:        76° 40.2' W


                            T I D A L   D A T U M S 


Tidal datums at BEAUFORT, DUKE MARINE LAB based on:

     LENGTH OF SERIES:      19 YEARS
     TIME PERIOD:           January 1983 - December 2001
     TIDAL EPOCH:           1983-2001
     CONTROL TIDE STATION:   


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

     HIGHEST OBSERVED WATER LEVEL (09/14/2005)         =  1.994
     MEAN HIGHER HIGH WATER                     MHHW   =  1.078
     MEAN HIGH WATER                            MHW    =  0.991
     North American Vertical Datum              NAVD88 =  0.633
     MEAN SEA LEVEL                             MSL    =  0.521
     MEAN TIDE LEVEL                            MTL    =  0.517
     MEAN LOW WATER                             MLW    =  0.043
     MEAN LOWER LOW WATER                       MLLW   =  0.000
     LOWEST  OBSERVED WATER LEVEL (03/08/2004)         = -0.751

North American Vertical Datum (NAVD88)

Bench Mark Elevation Information                In METERS above:

     Stamping or Designation                    MLLW        MHW

     NO 11 1964                                  2.535    1.544
     NO 10 1964                                  1.564    0.573
     X 112 1963                                  5.161    4.170
     6483 A 1996                                 2.759    1.768
     6483 B 1996                                 2.038    1.047
     6483 E 1998                                 1.782    0.791
     6483 F 1999                                 2.134    1.143
     6483 G 1999                                 2.134    1.143
     6483 J 2009                                 3.214    2.223
     NCCOS BEAUFORT                              2.864    1.873


                          U.S. DEPARTMENT OF COMMERCE
                National Oceanic and Atmospheric Administration
                            National Ocean Service
                                                                   Page  9 of  9

                                                                                
Station ID: 8656483                                PUBLICATION DATE:  05/06/2016
Name:       BEAUFORT, DUKE MARINE LAB                         
            NC
NOAA Chart: 11547                                  Latitude:         34° 43.2' N
USGS Quad:  BEAUFORT                               Longitude:        76° 40.2' W


                             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 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 8656483 Beaufort, NC

Revised: 10/15/2013
NOAA / National Ocean Service
Web site owner: Center for Operational Oceanographic Products and Services