Bench Mark Sheet for 8517756, Kingsborough CC
Leaflet |
Station Location
Published bench mark
Unpublished bench mark
Bench mark positions only appear on the map if their coordinates in the CO-OPS database are at the precision of degrees/minutes/seconds/and tenths of seconds. If the coordinates are less precise, the mark will not appear.
Printable version
Published Bench Mark Sheet for 8517756 KINGSBOROUGH CC, SHEEPSHEAD BAY NY
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Datums Page Page 1 of 6 Station ID: 8517756 PUBLICATION DATE: 01/13/2016 Name: KINGSBOROUGH CC, SHEEPSHEAD BAY NY NOAA Chart: 12350 Latitude: 40° 34.9' N ( 40.58125) USGS Quad: Coney Island Longitude: 73° 56.0' W ( -73.93383) To reach the station from the northern security checkpoint at the entrance to Kingsborough Community College campus on Shore Boulevard in Brooklyn, proceed 0.24 km (0.15 mi) east on Shore Boulevard past the checkpoint to the Maritime Technology Program building T-3 on the right and the tide station on the concrete dock directly north across the street. The bench marks are in the seawall and buildings around the perimeter of the campus. T I D A L B E N C H M A R K S PRIMARY BENCH MARK STAMPING: 7756 A 2015 DESIGNATION: 851 7756 A MONUMENTATION: DB VM#: 21358 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: Massive retaining walls OPUS PID: LATITUDE: 40° 34.9' N ( 40.58114) LONGITUDE: 73° 56.0' W ( -73.93400) The primary bench mark is a disk set in the top of a concrete seawall, 32.75 m (107.4 ft) NNE of a light pole on the N side of tennis courts, 27.26 m (89.4 ft) WNW of flag pole E of sidewalk leading to concrete pier, 24.34 m (79.9 ft) ENE of light pole in grass S of seawall, 13.73 m (45.0 ft) NNW of fire hydrant in grass S of seawall and 7.73 m (25.4 ft) NE of the NE corner of chain link fence around electrical transformer.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 2 of 6 Station ID: 8517756 PUBLICATION DATE: 01/13/2016 Name: KINGSBOROUGH CC, SHEEPSHEAD BAY NY NOAA Chart: 12350 Latitude: 40° 34.9' N ( 40.58125) USGS Quad: Coney Island Longitude: 73° 56.0' W ( -73.93383) T I D A L B E N C H M A R K S BENCH MARK STAMPING: 7756 B 2015 DESIGNATION: 851 7756 B MONUMENTATION: DB VM#: 21359 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: Massive retaining walls OPUS PID#: BBDV04 LATITUDE: 40° 34.7' N ( 40.57856) LONGITUDE: 73° 55.9' W ( -73.93200) The bench mark is a disk set in the top of a concrete seawall that is now inland of a parking area and the new seawall on the E side of campus, 21.41 m (70.2 ft) WNW of second light pole from S along newer section of seawall E of parking area, 19.26 m (63.2 ft) SSW of third light pole from S along newer section of seawall E of parking area, 19.09 m (62.6 ft) SE of light pole E of building t7, 18.01 m (59.1 ft) ENE of fire hydrant that is W of seawall avenue and S of building t7 and 12.73 m (41.8 ft) ESE of do not enter sign W of seawall avenue and N of concrete driveway. BENCH MARK STAMPING: 7756 C 2015 DESIGNATION: 851 7756 C MONUMENTATION: DB VM#: 21360 AGENCY: National Ocean Service IDB PID#: SETTING CLASSIFICATION: Mat foundations OPUS PID: LATITUDE: 40° 34.6' N ( 40.57642) LONGITUDE: 73° 55.9' W ( -73.93181) The bench mark is a disk set in N end of the concrete sill of the S of two garage doors, 23.25 m (76.3 ft) W of light pole on N side of concrete access driveway and S of brick wall, 19.79 m (64.9 ft) WNW of light pole near angle point on S side of concrete access driveway, 10.59 m (34.7 ft) NW of first light pole E of marine academic center building and S of concrete access driveway, 7.64 m (25.1 ft) N of marine academic center building corner on east side of a doorway and 5.50 m (18.0 ft) SW of N most bollard protecting the N garage door.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 3 of 6 Station ID: 8517756 PUBLICATION DATE: 01/13/2016 Name: KINGSBOROUGH CC, SHEEPSHEAD BAY NY NOAA Chart: 12350 Latitude: 40° 34.9' N ( 40.58125) USGS Quad: Coney Island Longitude: 73° 56.0' W ( -73.93383) T I D A L B E N C H M A R K S BENCH MARK STAMPING: N.E. KING 1989 DESIGNATION: 851 7756 NE KING MONUMENTATION: DB VM#: 21361 AGENCY: US Army Corps of Engineers IDB PID#: SETTING CLASSIFICATION: Massive retaining walls OPUS PID: LATITUDE: 40° 34.9' N ( 40.58114) LONGITUDE: 73° 56.0' W ( -73.93256) The bench mark is a disk set just S of the NE corner of the seawall, 32.14 m (105.4 ft) NE of a light pole on the W side of seawall avenue at the N end, 23.54 m (77.2 ft) ESE of W most post for railing on E side of the dry dock pier, 17.64 m (57.9 ft) S of metal pole with square concrete base N of seawall in rock riprap, 4.49 m (14.7 ft) E of metal pole for camera mount SW of the seawall corner and 4.17 m (13.7 ft) N of N most bollard on sea wall before wall steps down 0.6 m (2.0 ft) to lower seawall. The disk is recessed 1 cm (0 inch) in the concrete. BENCH MARK STAMPING: P. T. E. 1989 DESIGNATION: 851 7756 PT E MONUMENTATION: DB VM#: 21362 AGENCY: US Army Corps of Engineers IDB PID#: SETTING CLASSIFICATION: Massive retaining walls OPUS PID: LATITUDE: 40° 34.6' N ( 40.57625) LONGITUDE: 73° 55.9' W ( -73.93125) The bench mark is a disk set in the top of the seawall, 28.11 m (92.2 ft) SE of E most light pole on W side of seawall avenue and S of concrete driveway to marine academic center building, 26.28 m (86.2 ft) NE of emergency call box on post in grass NW of seawall avenue and 23.31 m (76.5 ft) SE of fire hydrant on W side of seawall avenue.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 4 of 6 Station ID: 8517756 PUBLICATION DATE: 01/13/2016 Name: KINGSBOROUGH CC, SHEEPSHEAD BAY NY NOAA Chart: 12350 Latitude: 40° 34.9' N ( 40.58125) USGS Quad: Coney Island Longitude: 73° 56.0' W ( -73.93383) T I D A L B E N C H M A R K S BENCH MARK STAMPING: P.T. F. 1989 DESIGNATION: 851 7756 PT F MONUMENTATION: DB VM#: 21363 AGENCY: US Army Corps of Engineers IDB PID#: SETTING CLASSIFICATION: Massive retaining walls OPUS PID: LATITUDE: 40° 34.5' N ( 40.57581) LONGITUDE: 73° 55.9' W ( -73.93161) The bench mark is a disk set in the top of the concrete seawall, 10.32 m (33.9 ft) SSE of fire hydrant on N side Seawall Avenue, 9.16 m (30.1 ft) SE of utility manhole on N side of Seawall Avenue and 9.05 m (29.7 ft) NNE of the SE corner of concrete wing wall on S side of seawall.
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 5 of 6 Station ID: 8517756 PUBLICATION DATE: 01/13/2016 Name: KINGSBOROUGH CC, SHEEPSHEAD BAY NY NOAA Chart: 12350 Latitude: 40° 34.9' N ( 40.58125) USGS Quad: Coney Island Longitude: 73° 56.0' W ( -73.93383) T I D A L D A T U M S Tidal datums at KINGSBOROUGH CC, SHEEPSHEAD BAY based on: LENGTH OF SERIES: 5 MONTHS TIME PERIOD: April 2015 - August 2015 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 = 1.674 MEAN HIGH WATER MHW = 1.566 MEAN TIDE LEVEL MTL = 0.815 MEAN SEA LEVEL MSL = 0.810 MEAN LOW WATER MLW = 0.065 MEAN LOWER LOW WATER MLLW = 0.000 North American Vertical Datum (NAVD88) Bench Mark Elevation Information In METERS above: Stamping or Designation MLLW MHW 7756 A 2015 3.759 2.193 7756 B 2015 4.428 2.862 7756 C 2015 4.474 2.908 N.E. KING 1989 3.794 2.228 P. T. E. 1989 4.438 2.872 P.T. F. 1989 4.445 2.879
U.S. DEPARTMENT OF COMMERCE National Oceanic and Atmospheric Administration National Ocean Service Page 6 of 6 Station ID: 8517756 PUBLICATION DATE: 01/13/2016 Name: KINGSBOROUGH CC, SHEEPSHEAD BAY NY NOAA Chart: 12350 Latitude: 40° 34.9' N ( 40.58125) USGS Quad: Coney Island Longitude: 73° 56.0' W ( -73.93383) 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.