U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 8531156 PUBLICATION DATE: 06/16/2004 Name: WOODBRIDGE CREEK #1 NJ NOAA Chart: 12327 Latitude: 40° 32.7' N ( 40.54500) USGS Quad: PERTH AMBOY Longitude: 74° 15.9' W ( -74.26500) To reach the tidal bench marks from the State Street underpass at the Outer Bridge at Perth Amboy, proceed 2.7 km (1.7 mi) north along State Street to where the bridge over the New York and Long Beach Railroad tracks. The bench marks are north and northeast of the C.P. Chemical plant wharf. The tide gage and staff were on the C.P. Chemical plant wharf on the east side of Woodbridge Creek. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 1156 A 1975 DESIGNATION: 853 1156 A TIDAL MONUMENTATION: Tidal Station disk VM#: 2508 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete foundation OPUS PID: LATITUDE: 40° 32.7' N ( 40.54500) LONGITUDE: 74° 15.9' W ( -74.26500) The primary bench mark is a disk set vertically in the north face of a two story concrete brick and metal building at the C.P. Chemical plant grounds, 122 m (400 ft) NE of Woodbridge Creek, 27.19 m (89.2 ft) SW of the SW corner of a 2-story brick and stucco building immediately to the NE, 25.45 m (83.5 ft) SW of a fire hydrant, 15.36 m (50.4 ft) SW from the most northerly corner of the building, 12 m (39 ft) south of utility pole #ER 50, and 0.91 m (3.0 ft) above ground.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 8531156 PUBLICATION DATE: 06/16/2004 Name: WOODBRIDGE CREEK #1 NJ NOAA Chart: 12327 Latitude: 40° 32.7' N ( 40.54500) USGS Quad: PERTH AMBOY Longitude: 74° 15.9' W ( -74.26500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: D 37 1952 DESIGNATION: D 37 MONUMENTATION: Bench Mark disk VM#: 2507 AGENCY: US Coast & Geodetic Survey (USC&GS) IDB PID#: KV0199 SETTING CLASSIFICATION: Overpass OPUS PID: LATITUDE: 40° 32.9' N ( 40.54830) LONGITUDE: 74° 15.6' W ( -74.26000) The bench mark is a disk set in the NE end of the State Street overpass over the New York and Long Beach railroad, 2.6 km (1.6 mi) north along State Street from its underpass under the Outer Bridge at Perth Amboy, 9 m (30 ft) east of the centerline of the street, and 1.22 m (4.0 ft) below street level. BENCH MARK STAMPING: 1156 B 1975 DESIGNATION: 853 1156 B TIDAL MONUMENTATION: Tidal Station disk VM#: 2509 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete wall OPUS PID: LATITUDE: 40° 32.7' N ( 40.54500) LONGITUDE: 74° 15.9' W ( -74.26500) The bench mark is a disk set horizontally in the top of a 0.40 m (1.3 ft) wide concrete wall, along the double tracks next to the guard house, at the C.P. Chemical plant grounds, 22.74 m (74.6 ft) west of the north corner of the guard house, 2.50 m (8.2 ft) SE of the most northerly track rail, and 2.29 m (7.5 ft) NW of an utility pole.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 8531156 PUBLICATION DATE: 06/16/2004 Name: WOODBRIDGE CREEK #1 NJ NOAA Chart: 12327 Latitude: 40° 32.7' N ( 40.54500) USGS Quad: PERTH AMBOY Longitude: 74° 15.9' W ( -74.26500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 1156 C 1975 DESIGNATION: 853 1156 C TIDAL MONUMENTATION: Tidal Station disk VM#: 2510 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper clad steel rod OPUS PID: LATITUDE: 40° 32.7' N ( 40.54500) LONGITUDE: 74° 15.9' W ( -74.26500) The bench mark is a disk located 0.3 km (0.2 mi) south along West Avenue from its intersection with Woodbridge Avenue, 122 m (400 ft) west along Arbor Street, 23.93 m (78.5 ft) west of a fire hydrant, 22.31 m (73.2 ft) south of the SE corner of the 2-story building at 29 Arbor Street, and 2.23 m (7.3 ft) north of a chain link fence around the Shell Oil Tank farm. The bench mark is set 6 cm (0.2 ft) below ground level, crimped to the top of a copper-clad steel rod driven 15.2 m (50 ft), and encased in a PVC pipe and concrete kickblock. BENCH MARK STAMPING: 1156 D 1975 DESIGNATION: 853 1156 D TIDAL MONUMENTATION: Tidal Station disk VM#: 2511 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper clad steel rod OPUS PID: LATITUDE: 40° 32.7' N ( 40.54500) LONGITUDE: 74° 15.9' W ( -74.26500) The bench mark is a disk located 0.3 km (0.2 mi) south along West Avenue from its intersection with Woodbridge Avenue, 76 m (250 ft) north of the State Street bridge over the New York and Long Beach railroad, 13.90 m (45.6 ft) SW of a fire hydrant, 10.15 m (33.3 ft) south of utility pole #28 WB, 4.51 m (14.8 ft) east of the east curb of State Street, and 2.50 m (8.2 ft) west of the west curb of West Avenue. The bench mark is set 0.30 m (1.0 ft) below ground level, crimped to the top of a copper-clad steel rod, and encased in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 8531156 PUBLICATION DATE: 06/16/2004 Name: WOODBRIDGE CREEK #1 NJ NOAA Chart: 12327 Latitude: 40° 32.7' N ( 40.54500) USGS Quad: PERTH AMBOY Longitude: 74° 15.9' W ( -74.26500) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 1156 E 1975 DESIGNATION: 853 1156 E TIDAL MONUMENTATION: Tidal Station disk VM#: 2512 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper clad steel rod OPUS PID: LATITUDE: 40° 32.7' N ( 40.54500) LONGITUDE: 74° 15.9' W ( -74.26500) The bench mark is a disk located in a park at the intersection of Woodbridge Avenue and West Avenue, 3.1 km (1.9 mi) north along State Street from the State Street underpass at the Outer Bridge, 19.69 m (64.6 ft) SW of utility pole #BP 3481, 9.27 m (30.4 ft) east of the east curb of Old Road, 8.96 m (29.4 ft) west of the west curb of West Avenue and 4.72 m (15.5 ft) south of a flagpole. The bench mark is set 6 cm (0.2 ft) below ground level, crimped to the top of a copper-clad steel rod driven 6.4 m (21 ft) to refusal, and encased in a PVC pipe and concrete kickblock.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 8531156 PUBLICATION DATE: 06/16/2004 Name: WOODBRIDGE CREEK #1 NJ NOAA Chart: 12327 Latitude: 40° 32.7' N ( 40.54500) USGS Quad: PERTH AMBOY Longitude: 74° 15.9' W ( -74.26500) T I D A L D A T U M S Tidal datums at WOODBRIDGE CREEK #1 based on: LENGTH OF SERIES: 11 MONTHS TIME PERIOD: January 1976 - November 1976 TIDAL EPOCH: 1983-2001 CONTROL TIDE STATION: 8531680 SANDY HOOK Elevations of tidal datums referred to Mean Lower Low Water (MLLW), in METERS: MEAN HIGHER HIGH WATER MHHW = 1.736 MEAN HIGH WATER MHW = 1.644 MEAN SEA LEVEL MSL = 0.886 MEAN TIDE LEVEL MTL = 0.850 MEAN LOW WATER MLW = 0.057 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 1156 A 1975 4.514 2.870 D 37 1952 12.861 11.217 1156 B 1975 5.578 3.934 1156 C 1975 4.519 2.875 1156 D 1975 7.910 6.266 1156 E 1975 10.617 8.973
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 8531156 PUBLICATION DATE: 06/16/2004 Name: WOODBRIDGE CREEK #1 NJ NOAA Chart: 12327 Latitude: 40° 32.7' N ( 40.54500) USGS Quad: PERTH AMBOY Longitude: 74° 15.9' W ( -74.26500) 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.