U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) To reach the tidal bench marks from the intersection of 17 south and 74 East in Wilmington, proceed east on 74 east for 8.0 km (5.0 mi) toward Wrightsville Beach, once over the drawbridge bear left on 74E to the intersection of Lumina Avenue and East Salisbury Street, continue through the light to the end of the street to Johnny Mercers Fishing Pier. The bench marks are located on East Salisbury Street and extend down N. Lumina Ave. The tide gauge is located on the offshore end of the pier. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 8163 A 2004 DESIGNATION: 865 8163 A MONUMENTATION: Tidal Station disk VM#: 17624 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Stainless steel rod in sleeve OPUS PID: LATITUDE: 34° 12.9' N ( 34.21439) LONGITUDE: 77° 47.3' W ( -77.78914) The primary bench mark is a disk located at the east end of East Salisbury Street in the sand on the south side of the walkway to Johnny Mercers Fishing Pier, 16.74 m (54.9 ft) NE of the NW corner of the public restrooms, 3.95 m (13.0 ft) SE of the south rail of the walkway, 2.86 m (9.4 ft) east of a NOAA witness post, and 2.70 m (8.9 ft) east of the southern leg of the sign for the Johnny Mercers Fishing Pier. The bench mark is set 0.3 m (1 ft) below the sand, crimped to the top of a stainless steel rod driven 21.6 m (71 ft) to refusal, encased in a 1.0 m (3.2 ft) grease sleeve with aluminum access cover and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 8163 B 2004 DESIGNATION: 865 8163 B MONUMENTATION: Tidal Station disk VM#: 17625 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Concrete pier deck OPUS PID: LATITUDE: 34° 12.8' N ( 34.21331) LONGITUDE: 77° 47.2' W ( -77.78653) The benchmark is a disk set flush in the concrete deck of the Johnny Mercer Fishing Pier, near the offshore end of the pier, 18.6 m (61.0 ft) NNW of the south end of the pier, 7.79 m (25.6 ft) west of the east side of the pier, and 7.76 m (25.5 ft) east of the west side of the pier. BENCH MARK STAMPING: 8163 C 2004 DESIGNATION: 865 8163 C MONUMENTATION: Tidal Station disk VM#: 17626 AGENCY: National Ocean Service (NOS) IDB PID: SETTING CLASSIFICATION: Concrete pier deck OPUS PID: LATITUDE: 34° 12.8' N ( 34.21392) LONGITUDE: 77° 47.3' W ( -77.78772) The benchmark is a disk set flush in the concrete deck of the Johnny Mercer Fishing Pier, near the center of the pier, approximately 96.41 m (316.3 ft) south of the south side of the pier house, 12.48 m (40.9 ft) SSE of the 5th light pole south of the pier house, 5.65 m (18.54 ft) NNW of the 6th light pole south of the pier house, and 3.22 (10.6 ft) NE of the SW side of the pier.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) T I D A L B E N C H M A R K S BENCH MARK STAMPING: C 163 1963 DESIGNATION: C 163 MONUMENTATION: Bench Mark disk VM#: 17628 AGENCY: National Geodetic Survey (NGS) IDB PID#: EA0631 SETTING CLASSIFICATION: Copper clad steel rod OPUS PID: LATITUDE: 34° 12.7' N ( 34.21111) LONGITUDE: 77° 47.6' W ( -77.79361) The bench mark is a disk crimped to the top of a copper coated steel rod located at the junction of North Lumina Avenue and Raleigh Street, 12.37 m (40.6 ft) NW of the NW corner of a frame house, 6.86 m (22.5 ft) SE of the centerline of Lumina Avenue, 6.71 m (22.0 ft) SW of the centerline of Raleigh Street, 0.31 m (1.0 ft) SW of a power line pole with two transformers, and projecting 2 inches above the level of the ground and protected by a 3 inch tile which projects 3 inches above the level of the ground, and driven to a depth of 14.6 m (48 ft) to refusal.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) T I D A L B E N C H M A R K S BENCH MARK STAMPING: D 163 1963 DESIGNATION: D 163 MONUMENTATION: Bench Mark disk VM#: 17629 AGENCY: National Geodetic Survey (NGS) IDB PID#: EA0630 SETTING CLASSIFICATION: Copper clad steel rod OPUS PID: LATITUDE: 34° 12.6' N ( 34.21056) LONGITUDE: 77° 47.7' W ( -77.79417) The benchmark is a disk crimped to the top of a copper coated steel rod located at the junction of North Lumina Avenue and Charlotte Street, 19.51 m (64.0 ft) SE of the east corner of a house at NO. 207, 7.93 m (26.02 ft) SW of the centerline of the street, 7.10 m (23.29 ft) NW of the center line of the avenue, 0.24 m (0.8 ft) NE of a board fence, and 0.24 m (0.8 ft) SW of a power line pole, projecting 4 inches above the level of the ground and protected by a 3-inch tile which projects 4 inches above the level of the ground, and driven to a depth of 15.8 m (52 ft) to refusal.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) T I D A L B E N C H M A R K S BENCH MARK STAMPING: PIER NO 2 1962 DESIGNATION: PIER RM 2 MONUMENTATION: Reference Mark disk VM#: 17630 AGENCY: National Geodetic Survey (NGS) IDB PID#: SETTING CLASSIFICATION: Concrete median OPUS PID#: EA3650 LATITUDE: 34° 12.9' N ( 34.21453) LONGITUDE: 77° 47.4' W ( -77.78981) The benchmark is a disk set flush in a concrete monument in the center of a concrete median strip, 22.71 m (74.5 ft) south of a fire hydrant, 21.15 m (69.4 ft) east of a light pole number ABD72Q, and 8.51 m (27.9 ft) NNE of the centerline of the south lane of the street. BENCH MARK STAMPING: NO 3 1923 DESIGNATION: 865 8163 TIDAL 3 MONUMENTATION: Tidal Station disk VM#: 18217 AGENCY: US Coast and Geodetic Survey (USC&GS) IDB PID#: EA0629 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 34° 12.6' N ( 34.21000) LONGITUDE: 77° 47.7' W ( -77.79444) The bench mark is a disk set in the top of a concrete monument, flush with the ground, and above the level of the avenue, NNE of the intersection of Atlanta Street and North Lumina Avenue, 8.23 m (27.0 ft) SE of the centerline of North Lumina Avenue, 5.03 m (16.5 ft) east of a power line pole, 4.57 m (15.0 ft) west of the west corner of house No. 204, and 4.27 m (14.0 ft) north of the north corner of house No. 202.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) T I D A L B E N C H M A R K S BENCH MARK STAMPING: NCGS 10 1994 DESIGNATION: NCGS 10 MONUMENTATION: Cap-and-Bolt VM#: 18219 AGENCY: US Army Corps of Engineers (USE) IDB PID#: DG8630 SETTING CLASSIFICATION: Beach sand dunes OPUS PID: LATITUDE: 34° 12.5' N ( 34.20778) LONGITUDE: 77° 47.6' W ( -77.79389) The bench mark is a disk set in the sand dunes of the beach recessed about 18 cm (0.6 ft) below the ground, at the east end of Oceanic Avenue, 25.40 m (83.3 ft) east of the SE corner of apartment building No. 24, 24.20 m (79.4 ft) SE of the NE corner of the apartment building, 22.0 m (72.2 ft) SSE of the centerline of the east end of Oceanic Avenue, and 0.3 m (1 ft) north of a witness post. BENCH MARK STAMPING: NO 7 1974 DESIGNATION: 865 8163 TIDAL 7 MONUMENTATION: Traverse Station disk VM#: 18998 AGENCY: NOS IDB PID: SETTING CLASSIFICATION: sidewalk OPUS PID: LATITUDE: 34° 12.6' N ( 34.21028) LONGITUDE: 77° 47.7' W ( -77.79472) The bench mark is located at Wrightsville Beach along North Lumina avenue near the intersection of North Lumina Avenue and East Atlanta Street, set flush in the sidewalk 25.5 ft (7.8 m) south of the centerline of East Atlanta Street, 22.6 ft (6.9 m) west of the NW corner of a porch of a house at 106 North Lumina Avenue, and 21.6 ft (6.6 m) east of North Lumina Avenue.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 7 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 8163 E 2017 DESIGNATION: 865 8163 E MONUMENTATION: Bench Mark disk VM#: 22622 AGENCY: National Ocean Service IDB PID: SETTING CLASSIFICATION: OPUS PID: LATITUDE: 34° 13.0' N ( 34.21619) LONGITUDE: 77° 47.6' W ( -77.79325) The bench mark is a brass disk set in the SE corner of bridge abutment along w. Salisbury St. This is the first bridge you cross when leaving Johnny Mercers fishing pier. The bench mark is 18.3 m (60 ft ) west of a fire hydrant number 015, 12.4 m (40.7 ft ) NE of residential concrete retaining wall, 7.0 m (23 ft ) SW of the centerline of Salisbury St, and 0.4 m (1.2 ft ) SSE of NNW face of retaining wall. BENCH MARK STAMPING: 8163 F 2017 DESIGNATION: 865 8163 F MONUMENTATION: Bench Mark disk VM#: 22623 AGENCY: National Ocean Service IDB PID: SETTING CLASSIFICATION: Light pole foundation OPUS PID: LATITUDE: 34° 12.9' N ( 34.21514) LONGITUDE: 77° 47.4' W ( -77.79078) The bench mark is a disk set in the foundation of light pole at intersection of N. Lumina Avenue and W. Salisbury, 12.0 m (39.3 ft ) north of the center median of W. Salisbury, 10.4 m (34 ft) west of the centerline of N. Lumina and 5.2 m (17.2 ft ) south of power pole number 1CCH58.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 8 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) T I D A L D A T U M S Tidal datums at WRIGHTSVILLE BEACH based on: LENGTH OF SERIES: 9 YEARS TIME PERIOD: 10/04-9/08, 9/09-8/11, 6/12-5/13, 10/13-9/15 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8656483 BEAUFORT, DUKE MARINE LAB Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: HIGHEST OBSERVED WATER LEVEL (09/14/2018) = 2.601 MEAN HIGHER HIGH WATER MHHW = 1.366 MEAN HIGH WATER MHW = 1.261 North American Vertical Datum NAVD88 = 0.827 MEAN SEA LEVEL MSL = 0.658 MEAN TIDE LEVEL MTL = 0.655 MEAN LOW WATER MLW = 0.048 MEAN LOWER LOW WATER MLLW = 0.000 LOWEST OBSERVED WATER LEVEL (01/08/2009) = -0.806 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 8163 A 2004 4.262 3.001 8163 B 2004 8.119 6.858 8163 C 2004 8.153 6.892 C 163 1963 3.056 1.795 D 163 1963 2.605 1.344 PIER NO 2 1962 2.812 1.551 NO 3 1923 2.353 1.092 NCGS 10 1994 4.599 3.338 NO 7 1974 2.205 0.944 8163 E 2017 3.660 2.399 8163 F 2017 2.532 1.271
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 9 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) Foot Notes: Bench marks 8163 E 2017 and 8163 F 2017 are based on one differential leveling connection and do not meet the quality control standards of the NOS. Therefore, caution should be used when deriving elevations for these marks.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 10 of 10 Station ID: 8658163 PUBLICATION DATE: 12/19/2018 Name: WRIGHTSVILLE BEACH NC NOAA Chart: 11539 Latitude: 34° 12.8' N ( 34.21331) USGS Quad: WRIGHTSVILLE BEACH Longitude: 77° 47.2' W ( -77.78669) 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.