U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 5 Station ID: 8531223 PUBLICATION DATE: 05/28/2004 Name: CHEESEQUAKE CREEK NJ NOAA Chart: 12131 Latitude: 40° 27.2' N ( 40.45330) USGS Quad: SOUTH AMBOY Longitude: 74° 16.4' W ( -74.27330) To reach the tidal bench marks from the State Highway 35 Bridge over Cheesequake Creek, proceed 1.6 km (1.0 mi) west to the underpass beneath the Garden State Parkway, then turn left and proceed SSE parallel to the Parkway to the Cheesequake Creek. The bench marks in the vicinity of the Garden State Parkway bridges over the Cheesequake Creek. The tide gage and staff were located on the dock at the Morgan Marina. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 1223 A 1975 DESIGNATION: 853 1223 A TIDAL MONUMENTATION: Tidal Station disk VM#: 2513 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Concrete retaining wall OPUS PID: LATITUDE: 40° 27.2' N ( 40.45330) LONGITUDE: 74° 16.4' W ( -74.27330) The primary bench mark is a disk set in the SE corner of a concrete retaining wall near the NE abutment of the east bridge of the Garden State Parkway bridge, 11 m (36 ft) SW of the southerly corner of a concrete wall supporting a drainage pipe, 1.01 m (3.3 ft) south of the abutment, 0.30 m (1.6 ft) NW of the concrete wall corner, and 2.99 m (9.8 ft) below pavement level.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 5 Station ID: 8531223 PUBLICATION DATE: 05/28/2004 Name: CHEESEQUAKE CREEK NJ NOAA Chart: 12131 Latitude: 40° 27.2' N ( 40.45330) USGS Quad: SOUTH AMBOY Longitude: 74° 16.4' W ( -74.27330) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 1223 B 1975 DESIGNATION: 853 1223 B TIDAL MONUMENTATION: Tidal Station disk VM#: 2514 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper clad steel rod OPUS PID: LATITUDE: 40° 27.2' N ( 40.45330) LONGITUDE: 74° 16.4' W ( -74.27330) The bench mark is a disk located 0.2 km (0.1 mi) NW of the east bridge abutment of the Garden State Parkway bridge, 39.44 m (129.4 ft) north of the NE corner of a nearby drain, 6.77 m (22.2 ft) east of the east edge of the pavement, and 6.28 m (20.6 ft) SE of the end of a concrete and wood guard rail. The bench mark is crimped to the top of a copper-clad steel rod driven 13.4 m (44 ft) to refusal, and encased in a PVC pipe and concrete. BENCH MARK STAMPING: 1223 C 1975 DESIGNATION: 853 1223 C TIDAL MONUMENTATION: Tidal Station disk VM#: 2515 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper clad steel rod OPUS PID: LATITUDE: 40° 27.2' N ( 40.45330) LONGITUDE: 74° 16.4' W ( -74.27330) The bench mark is a disk located 0.6 km (0.4 mi) north of the Parkway bridge over Cheesequake Creek, 58 m (190 ft) north of the north end of the wood guard rail, 14.11 m (46.3 ft) west of a 0.61 m (2.0 ft) diameter twin oak, and 11.80 m (38.7 ft) east of the east edge of the pavement. The bench mark is crimped to the top of a copper-clad steel rod driven 12.5 m (41 ft) to refusal, and encased in a PVC pipe and concrete.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 5 Station ID: 8531223 PUBLICATION DATE: 05/28/2004 Name: CHEESEQUAKE CREEK NJ NOAA Chart: 12131 Latitude: 40° 27.2' N ( 40.45330) USGS Quad: SOUTH AMBOY Longitude: 74° 16.4' W ( -74.27330) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 1223 D 1975 DESIGNATION: 853 1223 D TIDAL MONUMENTATION: Tidal Station disk VM#: 2516 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Copper clad steel rod OPUS PID: LATITUDE: 40° 27.2' N ( 40.45330) LONGITUDE: 74° 16.4' W ( -74.27330) The bench mark is a disk located just south of the Ernston Road underpass of the Garden State Parkway, 25.73 m (84.4 ft) SE of the center of a nearby drain, 9.51 m (31.2 ft) east of the east edge of the pavement, and 2.74 m (9.0 ft) west of the top of the slope. The bench mark is set 6 cm (0.2 ft) below ground level, crimped to the top of a copper-clad steel rod driven 14.6 m (48 ft) to refusal, and encased in a PVC pipe and concrete. BENCH MARK STAMPING: 1223 E 1975 DESIGNATION: 853 1223 E TIDAL MONUMENTATION: Tidal Station disk VM#: 2517 AGENCY: National Ocean Survey (NOS) IDB PID#: SETTING CLASSIFICATION: Bridge abutment OPUS PID: LATITUDE: 40° 27.2' N ( 40.45330) LONGITUDE: 74° 16.4' W ( -74.27330) The bench mark is a disk set vertically into the east face of the abutment, in the SE corner of the most easterly Parkway bridge over Ernston Road, 25.0 m (82.0 ft) SW of the 0.6 m (2 ft) diameter manhole on Ernston Road, 20.18 m (66.2 ft) west of the easterly end of a wood and steel guard rail, 2.93 m (9.6 ft) from the SE corner, and 0.70 m (2.3 ft) below the level of the Parkway surface.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 5 Station ID: 8531223 PUBLICATION DATE: 05/28/2004 Name: CHEESEQUAKE CREEK NJ NOAA Chart: 12131 Latitude: 40° 27.2' N ( 40.45330) USGS Quad: SOUTH AMBOY Longitude: 74° 16.4' W ( -74.27330) T I D A L D A T U M S Tidal datums at CHEESEQUAKE CREEK 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 = 1.717 MEAN HIGH WATER MHW = 1.623 MEAN SEA LEVEL MSL = 0.875 MEAN TIDE LEVEL MTL = 0.843 MEAN LOW WATER MLW = 0.062 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 1223 A 1975 5.016 3.393 1223 B 1975 10.616 8.993 1223 C 1975 16.929 15.306 1223 D 1975 19.739 18.116 1223 E 1975 20.699 19.076
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 5 Station ID: 8531223 PUBLICATION DATE: 05/28/2004 Name: CHEESEQUAKE CREEK NJ NOAA Chart: 12131 Latitude: 40° 27.2' N ( 40.45330) USGS Quad: SOUTH AMBOY Longitude: 74° 16.4' W ( -74.27330) 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.