U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 Station ID: 8534212 PUBLICATION DATE: 02/05/2004 Name: CRAMERS BOATYARD, MULLICA RIVER NJ NOAA Chart: 12316 Latitude: 39° 32.9' N ( 39.54830) USGS Quad: NEW GRETNA Longitude: 74° 27.7' W ( -74.46170) To reach the tidal bench marks from the intersection of Main Street and Old New York Road (Route 575) in Port Republic, proceed north on Old New York Road for 1.8 km (1.1 mi) to Chestnut Neck Road, then turn right and proceed NE on Chestnut Neck Road (Route 575) for 2.9 km (1.8 mi) to Old New York Road, then turn left and proceed north along Old New York Road to the Chestnut Neck Marina. The bench marks are located along Old New York Road. The tide gage and staff were located on the Chestnut Neck Marina Pier. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 4212 D 1977 DESIGNATION: 853 4212 D TIDAL MONUMENTATION: Tidal Station disk VM#: 2656 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 39° 32.9' N ( 39.54830) LONGITUDE: 74° 27.7' W ( -74.46170) The primary bench mark is a disk located at the Chestnut Neck Marina, 16.95 m (55.6 ft) east of the centerline of Old New York Road, 14.78 m (48.5 ft) south of the southwesternmost corner of a 1-story wood garage building, and 0.94 m (3.1 ft) SE of wood utility pole #P 34187. The bench mark is 0.06 m (0.2 ft) below ground level, crimped to a copper-coated steel rod driven 15.2 m (50 ft), and encased in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 Station ID: 8534212 PUBLICATION DATE: 02/05/2004 Name: CRAMERS BOATYARD, MULLICA RIVER NJ NOAA Chart: 12316 Latitude: 39° 32.9' N ( 39.54830) USGS Quad: NEW GRETNA Longitude: 74° 27.7' W ( -74.46170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 4212 E 1977 DESIGNATION: 853 4212 E TIDAL MONUMENTATION: Tidal Station disk VM#: 2657 AGENCY: National Ocean Survey (NOS) IDB PID#: JU2432 SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID: LATITUDE: 39° 32.7' N ( 39.54500) LONGITUDE: 74° 27.7' W ( -74.46170) The bench mark is a disk located along Old New York Road, 0.2 km (0.1 mi) south of Bench Mark 4212 D 1977, 92 m (303 ft) NW of Bench Mark 4212 F 1977, 35.57 m (116.7 ft) SW of wood utility pole #8-9, 15.03 m (49.3 ft) west of a wooden fence corner, 9 m (31 ft) east of the centerline of Old New York Road, and 1.37 m (4.5 ft) east of a traffic reflector post. The bench mark is 0.06 (0.2 ft) below ground level, crimped to a copper-clad steel rod driven 15.2 m (50 ft), and encased in a PVC pipe and concrete kickblock. BENCH MARK STAMPING: 4212 F 1977 DESIGNATION: 853 4212 F TIDAL MONUMENTATION: Tidal Station disk VM#: 2658 AGENCY: National Ocean Survey (NOS) IDB PID#: JU2431 SETTING CLASSIFICATION: Copper-clad steel rod OPUS PID#: JU2431 LATITUDE: 39° 32.7' N ( 39.54500) LONGITUDE: 74° 27.7' W ( -74.46170) The bench mark is a disk located 61 m (200 ft) NE of Bench Mark F 8 1930 8.333, 31 m (101 ft) SW of wood utility pole #14605, 24.17 m (79.3 ft) NW of wood utility pole #14604, and 4.39 m (14.4 ft) west of the centerline of the bituminous paved road bordering the east side of a triangular park. The bench mark is 0.06 m (0.2 ft) below ground level, crimped to a copper-clad steel rod driven 15.2 m (50), and encased in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 Station ID: 8534212 PUBLICATION DATE: 02/05/2004 Name: CRAMERS BOATYARD, MULLICA RIVER NJ NOAA Chart: 12316 Latitude: 39° 32.9' N ( 39.54830) USGS Quad: NEW GRETNA Longitude: 74° 27.7' W ( -74.46170) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 1852 DESIGNATION: 1852 MONUMENTATION: Survey disk VM#: 2659 AGENCY: New Jersey Geological Survey (NJGS) IDB PID#: JU0120 SETTING CLASSIFICATION: Concrete monument OPUS PID: LATITUDE: 39° 32.5' N ( 39.54170) LONGITUDE: 74° 27.9' W ( -74.46500) The bench mark is a disk set in the top of a concrete monument along U.S. Highway 9 (New York Highway), 0.2 km (0.1 mi) south of County Road 575, 15.54 m (51.0 ft) west of and across U.S. Highway 9 from power pole #14094, 8.38 m (27.5 ft) WNW of the centerline of the U.S. Highway 9, and 2.74 m (9.0 ft) SW of cable line pole #P-19356.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 Station ID: 8534212 PUBLICATION DATE: 02/05/2004 Name: CRAMERS BOATYARD, MULLICA RIVER NJ NOAA Chart: 12316 Latitude: 39° 32.9' N ( 39.54830) USGS Quad: NEW GRETNA Longitude: 74° 27.7' W ( -74.46170) T I D A L D A T U M S Tidal datums at CRAMERS BOATYARD, MULLICA RIVER based on: LENGTH OF SERIES: 7 MONTHS TIME PERIOD: April 1978 - October 1978 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8557380 LEWES, FT. MILES Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 1.024 MEAN HIGH WATER MHW = 0.943 MEAN SEA LEVEL MSL = 0.530 North American Vertical Datum NAVD88 = 0.522 MEAN TIDE LEVEL MTL = 0.495 MEAN LOW WATER MLW = 0.047 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 4212 D 1977 1.982 1.039 4212 E 1977 2.342 1.399 4212 F 1977 2.346 1.403 1852 2.496 1.553
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 Station ID: 8534212 PUBLICATION DATE: 02/05/2004 Name: CRAMERS BOATYARD, MULLICA RIVER NJ NOAA Chart: 12316 Latitude: 39° 32.9' N ( 39.54830) USGS Quad: NEW GRETNA Longitude: 74° 27.7' W ( -74.46170) 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.