U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Datums Page Page 1 of 7
Station ID: 8659897 PUBLICATION DATE: 01/26/2012
Name: SUNSET BEACH PIER, ATLANTIC OCEAN
NC
NOAA Chart: 11535 Latitude: 33° 51.9' N ( 33.86500)
USGS Quad: BRUNSWICK Longitude: 78° 30.4' W ( -78.50670)
T I D A L B E N C H M A R K S
PRIMARY BENCH MARK STAMPING: 9897 A 2003
DESIGNATION: 865 9897 A
MONUMENTATION: Metal Rod VM#: 17566
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Stainless steel rod OPUS PID:
LATITUDE: 33° 52.1' N ( 33.86830) LONGITUDE: 78° 30.4' W ( -78.50670)
The primary bench mark is set in the center of the Vesta Pier parking lot, 66.81
m (219.2 ft) SSE of a power transformer FS1B (near bench mark VP NO 11975),
20.21 m (66.3 ft) NE of the NE corner of power transformer SC1-FS2, and 1.10 m
(3.6 ft) north of a witness post driven into the ground on the north side of an
0.21 m (0.7 ft) diameter post. The datum point is 10 cm (0.3 ft) below the
ground, being the top of a stainless steel rod driven 13.4 m (44 ft) in a sleeve
extending to a depth of 0.91 m (3.0 ft) and encased in a NOS logo cap. Note-The
sleeve depth does not meet the specifications of a Class A rod mark.
BENCH MARK STAMPING: 9897 B 2003
DESIGNATION: 865 9897 B
MONUMENTATION: Tidal Station disk VM#: 17567
AGENCY: National Ocean Service (NOS) IDB PID#:
SETTING CLASSIFICATION: Concrete pad OPUS PID:
LATITUDE: 33° 52.0' N ( 33.86670) LONGITUDE: 78° 30.4' W ( -78.50670)
The bench mark is set in a 1 m X 1 m X 0.21 m (2 ft X 2 ft X 0.7 ft) concrete
pad located just east of the Vesta Pier entrance ramp, 17.83 m (58.5 ft) west of
light pole NO. 7 in city beach access and parking area, 17.53 m (57.5 ft) east
of the extended centerline of the pier ramp, and 0.3 m (1 ft) north of a witness
post.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 2 of 7
Station ID: 8659897 PUBLICATION DATE: 01/26/2012
Name: SUNSET BEACH PIER, ATLANTIC OCEAN
NC
NOAA Chart: 11535 Latitude: 33° 51.9' N ( 33.86500)
USGS Quad: BRUNSWICK Longitude: 78° 30.4' W ( -78.50670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: MSL 10.535
DESIGNATION: MSL 10.535
MONUMENTATION: Tidal Station disk VM#: 17568
AGENCY: US Corp of Engineers (USE) IDB PID#: DD4657
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 33° 52.1' N ( 33.86830) LONGITUDE: 78° 30.4' W ( -78.50670)
The bench mark is a disk set in a concrete monument located on the south side of
Main Street between 27th Street and Sunset Boulevard, 10.45 m (34.3 ft) south of
the centerline of Main Street, 0.79 m (2.6 ft) ESE of a witness post, 0.49 m
(WNW of a light pole 32, and 0.15 m (0.49 ft) above the ground.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 3 of 7
Station ID: 8659897 PUBLICATION DATE: 01/26/2012
Name: SUNSET BEACH PIER, ATLANTIC OCEAN
NC
NOAA Chart: 11535 Latitude: 33° 51.9' N ( 33.86500)
USGS Quad: BRUNSWICK Longitude: 78° 30.4' W ( -78.50670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: SOUP 1999
DESIGNATION: SOUP
MONUMENTATION: Horizontal Station disk VM#: 17569
AGENCY: National Goedetic Survey (NGS) IDB PID#: AJ4993
SETTING CLASSIFICATION: Sidewalk OPUS PID:
LATITUDE: 33° 52.1' N ( 33.86830) LONGITUDE: 78° 30.1' W ( -78.50170)
The bench mark is a disk set in a concrete sidewalk located at the SW corner of
the intersection of Sunset Boulevard and Main Street, 21.98 m (72.1 ft) ENE of
bench mark MSL 10.535, 9.88 m (32.4 ft) west of the centerline of Sunset
Boulevard, and 6.70 m (22.0 ft) south of the centerline of Main Street.
BENCH MARK STAMPING: L-34
DESIGNATION: L 34
ALIAS:
MONUMENTATION: Bench Mark disk VM#: 17570
AGENCY: US Army Corp of Engineers (USE) IDB PID#:
SETTING CLASSIFICATION: Concrete monument OPUS PID:
LATITUDE: 33° 52.1' N ( 33.86830) LONGITUDE: 78° 30.4' W ( -78.50670)
The bench mark is a disk set in a 0.13 m (0.4 ft) X 0.13 m (0.4 ft) concrete
monument located at the NE corner of the intersection of Main Street and Sunset
Boulevard, 11.89 m (39.0 ft) east of the centerline of Sunset Boulevard, 7.77 m
(25.5 ft) north of the centerline of Main Street, and 0.15 m (0.49 ft0 above the
ground level.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 4 of 7
Station ID: 8659897 PUBLICATION DATE: 01/26/2012
Name: SUNSET BEACH PIER, ATLANTIC OCEAN
NC
NOAA Chart: 11535 Latitude: 33° 51.9' N ( 33.86500)
USGS Quad: BRUNSWICK Longitude: 78° 30.4' W ( -78.50670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: VP NO 5 1975
DESIGNATION: VP NO 5
MONUMENTATION: Tidal Station disk VM#: 17571
AGENCY: National Ocean Survey (NOS) IDB PID#: DD4655
SETTING CLASSIFICATION: Galvanized steel pipe OPUS PID:
LATITUDE: 33° 52.1' N ( 33.86830) LONGITUDE: 78° 30.4' W ( -78.50670)
The bench mark is a disk located at the intersection of Main Street and First
Street, 10.06 m (33.0 ft) south of the centerline of Main Street, 7.65 m (25.0
ft) north of the NW corner of a house on the south side of Main Street, 0.88 m
(2.89 ft) west of a witness post, and 0.82 m (2.69 ft) east of power pole
C-13-12. The bench mark is crimped to a galvanized steel pipe driven 11.6 m (38
ft) to refusal, and ecased in a 4" PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 5 of 7
Station ID: 8659897 PUBLICATION DATE: 01/26/2012
Name: SUNSET BEACH PIER, ATLANTIC OCEAN
NC
NOAA Chart: 11535 Latitude: 33° 51.9' N ( 33.86500)
USGS Quad: BRUNSWICK Longitude: 78° 30.4' W ( -78.50670)
T I D A L B E N C H M A R K S
BENCH MARK STAMPING: VP NO 1 1975
DESIGNATION: VP NO 1
MONUMENTATION: Tidal Station disk VM#: 17572
AGENCY: National Ocean Survey (NOS) IDB PID#: DD4658
SETTING CLASSIFICATION: Galvanized steel rod OPUS PID:
LATITUDE: 33° 52.1' N ( 33.86830) LONGITUDE: 78° 30.5' W ( -78.50830)
The bench mark is a disk located at the west end of the Vesta Pier parking lot,
9.17 m (30.1 ft) south of the centerline of Main Street, 0.79 m (2.6 ft) SE of a
telephone pole located on the south side of Main Street at the intersection with
27th Street, and 0.67 m (2.2 ft) west of a witness post. The bench mark is set
3 cm (0.1 ft) below the ground, crimped to a galvanized steel rod driven 12.2 m
(40 ft) to refusal, and encased in a 4" PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 6 of 7
Station ID: 8659897 PUBLICATION DATE: 01/26/2012
Name: SUNSET BEACH PIER, ATLANTIC OCEAN
NC
NOAA Chart: 11535 Latitude: 33° 51.9' N ( 33.86500)
USGS Quad: BRUNSWICK Longitude: 78° 30.4' W ( -78.50670)
T I D A L D A T U M S
Tidal datums at SUNSET BEACH PIER, ATLANTIC OCEAN based on:
LENGTH OF SERIES: 3 YEARS
TIME PERIOD: March 2005 - February 2008
TIDAL EPOCH: 1983-2001
CONTROL TIDE STATION: 8661070 SPRINGMAID PIER, ATLANTIC OCEAN
Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS:
HIGHEST OBSERVED WATER LEVEL (10/09/2006) = 2.309
MEAN HIGHER HIGH WATER MHHW = 1.683
MEAN HIGH WATER MHW = 1.564
MEAN SEA LEVEL MSL = 0.813
MEAN TIDE LEVEL MTL = 0.810
MEAN LOW WATER MLW = 0.055
MEAN LOWER LOW WATER MLLW = 0.000
LOWEST OBSERVED WATER LEVEL (03/12/2005) = -0.959
North American Vertical Datum (NAVD88)
Bench Mark Elevation Information In METERS above:
Stamping or Designation MLLW MHW
9897 A 2003 3.325 1.761
9897 B 2003 3.269 1.705
MSL 10.535 3.777 2.213
SOUP 1999 3.544 1.980
L-34 3.819 2.255
VP NO 5 1975 3.302 1.738
VP NO 1 1975 3.291 1.727
U.S. DEPARTMENT OF COMMERCE
National Oceanic and Atmospheric Administration
National Ocean Service
Page 7 of 7
Station ID: 8659897 PUBLICATION DATE: 01/26/2012
Name: SUNSET BEACH PIER, ATLANTIC OCEAN
NC
NOAA Chart: 11535 Latitude: 33° 51.9' N ( 33.86500)
USGS Quad: BRUNSWICK Longitude: 78° 30.4' W ( -78.50670)
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.