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Details for Benchmark: KU1415

N 40° 45.583 W 073° 57.717 (NAD 83)

Altitude: 55.04

Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)

Location:
In NEW YORK county, NY View Original Datasheet
Designation:
1670 BOM
Marker Type:
chiseled square
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Found in good condition as described. Harassed by a vagrant, but still got my photo.

[Photos:]
photoKU1415 - 1670 BOM

Had to wait for a few minutes because someone was sitting on the benchmark, but I was finally able to get to it....LOL

Found in good condition

[Photos:]
photoCameraZOOM-20121008133040797

construction at that side of the tunnel. Someone spray painted the mark so it was east to spot.

Eine interessante Variante von Geocaching, die ich so bisher noch nicht kannte. Und wenn man schon mal über den großen Teich gereist ist, muss man dies natürlich auch mal testen! Der Benchmark befindet sich wie angegeben in gutem Zustand am bekannten Ort!! Vielen Dank fürs Zeigen!!

P.S.: Ach ja, STF!!

[Photos:]
photoKU1415

Found the red spot on the discribed place.

[Photos:]
photoKU1415

This wasn't far from the animal hospital we were visiting so I walked on over. Glad I looked at pics before coming, as I have never seen this type of benchmark before. Interesting.

[b]Queensboro Bridge Tidal Station
Station ID: 8518687[/b]

This bench mark and several nearby bench marks are [b]Tidal Bench Marks[/b]. They are associated with the Queensboro Bridge Tidal Station. Stations such as this one are maintained by the National Ocean Service (NOS) and the data are administered and published on the web by the Center for Operational Oceanographic Products and Services (CO-OPS), and serve to track local tides and water levels. NOS and CO-OPS are agencies within NOAA, as is the NGS.

For complete information on this tidal station and the associated tidal bench marks, see the page on the CO-OPS web site: [url=http://tidesandcurrents.noaa.gov/data_menu.shtml?stn=8518687%20Queensboro%20Bridge,%20NY&type=Bench%20Mark%20Data%20Sheets]Tidal Station 851 8687[/url].

The bench marks are located on the bridge abutment, on East 60th Street and the FDR Service Road, and in the area of the former 60th Street Heliport (closed in 1998), north of the bridge and east of the FDR Drive. The tide gage was located on the East River bulkhead near the former heliport. The area where the heliport was located has been largely obliterated by the reconstruction of the FDR Drive in this area over the last several years. The southern portion of the former heliport area is currently in use by FDR Drive construction crews.

There are altogether 11 benchmarks associated with this tidal station. 3 stations are NGS stations and the other 8 (with CO-OPS Vertical Mark Numbers or VM#s) are non-NGS stations and are maintained by CO-OPS in a separate database of tidal bench marks.

Of the 3 NGS stations, only one (This station - KU1415 "1670 BOM") is in good condition, one ([url=http://www.geocaching.com/mark/details.aspx?Pid=KU1416]KU1416[/url] "B USE") is questionable and the third ([url=http://www.geocaching.com/mark/details.aspx?Pid=KU1418]KU1418[/url] "H 339") is destroyed.

Of the 8 NOS stations, 5 were found in Good Condition, one was destroyed by new construction and the other 2 were in the former heliport area and were not found due new construction (including a new top surface and fence on the bulkhead), and are probably lost. Directions and photos for the non-NGS marks are given below.

[b]The benchmarks are:[/b]

[b]On the bridge abutment and nearby streets[/b]
PID [url=http://www.geocaching.com/mark/details.aspx?Pid=KU1416]KU1416[/url] "B USE" - Questionable
PID KU1415 "1670 BOM" - (This station) Good Condition
PID [url=http://www.geocaching.com/mark/details.aspx?Pid=KU1418]KU1418[/url] "H 339" - Destroyed
VM# 16519 "851 8687 D" - Good Condition (5/12)
VM# 16520 "851 8687 E" - Good Condition (5/12)
VM# 16551 "851 8687 F" - Destroyed (5/12)

[b]In the former heliport area[/b]
VM# 16286 "851 8687 A" - Good Condition (5/17)
VM# 16287 "851 8687 B" - Not Found (heliport)
VM# 16288 "851 8687 C" - Not Found (heliport)
VM# 16553 "TBM 851 8687 S" - Good Condition (5/17)

[b]Along the FDR Drive pedestrian esplanade[/b]
VM# 16552 "TBM 851 8687 N" - Good Condition (5/12)

[This entry was edited by Papa-Bear-NYC on Saturday, May 20, 2006 at 1:16:33 PM.]

[Photos:]
photoQuensboro Bridge Tidal Station locale, NYC
This shows the 60th Steet Heliport when it was still active. The area extended from the bridge north for about 4 blocks, and from the East 60th Street overpass ramp to the river. The tide guage was attached to the bulkhead near the side of the hanger, to the rear of the photo.
photoQuensboro Bridge Tidal Station locale, NYC
This shows the same area when the FDR Drive reconstruction project was in progress. A temporary bypass roadway was built over the river in the forground to divert traffic off of the roads being rebuilt. The temporary bypass has since been removed. Only in New York!
photoVM #16519 "851 8687 D" setting, 60th & First, NYC
View east on 60th Street between First and York Avenues along the north side of the Queensboro Bridge. The mark is on a retaining wall of a loading dock for Gustavino's Restaurant.
photoVM #16519 "851 8687 D", 60th & First, NYC
Closeup of the disk. Note that they managed to stamp the "D" backwards.
photoVM #16520 "851 8687 E" setting, 61st & FDR, NYC
View from the FDR service road between 61st and 62nd Streets. The mark is on the concrete step which separates the street from the auto drive-through at this building.
photoVM #16520 "851 8687 E", 61st & FDR, NYC
photoVM #16521 Destroyed location, 62nd & FDR, NYC
The mark was on south the concrete pier of the underpass at this location. The underpass has been completely replaced.
photoVM #16286 "851 8687 A",60th Street Heliport,NYC
This is the old heliport area, now a construction site. The mark was a bolt attaching a large iron cleat to the East River bulkhead. Luckily, there was a gap between two construction trailers at this point.
photoVM #16286 "851 8687 A",60th Street Heliport,NYC
photoVM #16553 "TBM 851 8687 S", Heliport hanger,NYC
This view is looking north along the East River bulkhead at around 60th Street. The structure on the left is the former 60th Street Heliport hanger. The newly constructed north bound lanes of the FDR Drive actually go through this structure. The temporary roadway bypass over the river was to the right. The mark is a bolt on the cleat in the foreground.
photoVM #16553 "TBM 851 8687 S", Heliport hanger,NYC
photoVM #16552 "TBM 851 8687 N", FDR Esplanade,NYC
View north along the FDR pedestrian esplanade just south of East 63rd Street. The East 63rd Street pedestrian overpass in in the background. The mark is the center bolt on the bollards.
photoVM #16552 "TBM 851 8687 N", FDR Esplanade,NYC

This is now much easier to find (although I sure took my sweet time). The reference mark, as shown in the photos by previous finders, is now spray painted bright orange. I looked right through that and wandered around elsewhere for a while until I looked carefully through the paint. 6th of 6 benchmarks (and one geocache) this morning while out for a run.

Found during our 6 days trip to NY

[Photos:]
photoRed marker

As described

[Photos:]
photoKU1415 "1670 BOM" 59th & First, NYC
photoKU1415 setting 59th & First, NYC
The corner of the SW butress for the 59th Street bridge arch over First Avenue
photoKU1415 Arch over 1st Ave, 59th & 1st, NYC
View of arch over First Avenue from 59th Street

Found it® with Harry Dolphin.

Fairly easy to find.

[Photos:]
photoKU1415
photoKU1415
N 40° 45.592 W 073° 57.717

This chiseled square was found as described.
Since it is made on the outside corner of the stone, this square only has two carved sides; the other two sides are the edges of the stone.

[Photos:]
photoAt station 1670 BOM in New York, New York
The yellow arrow points to the chiseled square's location. (The purple arrow above it points to KU1416.) The view is NE along 1st Avenue at night.
photoStation 1670 BOM in New York, New York
The chiseled square. Two of its sides are the edges of the stone.

Documented History (by the NGS)

Unknown by NY4170 (MONUMENTED)
01/01/1952 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1952 IN NEW YORK. IN NEW YORK, IN BOROUGH OF MANHATTAN, AT INTERSECTION OF FIRST AVENUE AND EAST 59TH STREET, 14 FEET NORTHWEST OF NORTHWEST CURB OF FIRST AVENUE, 63 1/2 FEET NORTHEAST OF NORTHEAST CURB OF EAST 59TH STREET, A 1 1/4-INCH OUTLINED SQUARE ON TOP OF THE SOUTH CORNER OF STONE AT SOUTHWEST END OF NORTHWEST ABUTMENT OF QUEENSBORO BRIDGE AND ABOUT 1 1/2 FEET ABOVE SIDE WALK.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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