Skip to Content

Details for Benchmark: KV0563

N 40° 38.283 W 074° 00.633 (NAD 83)

Altitude: 99.41

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

Location:
In KINGS county, NY View Original Datasheet
Designation:
TDB
Marker Type:
chiseled cross
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

Must Read!

Benchmarks may be on private property or in dangerous locations. Obey local laws. By using the services on Geocaching.com you agree to this disclaimer.

I love to find ones like this.

It was an old chiseled cross on a granite monument 6 inches below the sidewalk. It was accessible through an old Brooklyn Topographical Bureau 12 inch square "man hole". I had to dig out a few inches of dirt. I discovered the chiselled cross had a chiselled arrow pointing to it from the west side of the granite monument.

First to Find!

[Photos:]
photoKV0563 TDB setting, Bay Ridge, Brooklyn NY
For once the cover had not been buried by a new layer of concrete. The cover was not the standard Brooklyn Topographical Bureau cover, just a square drainage cover.
photoKV0563 TDB setting, Bay Ridge, Brooklyn NY
The cover is opened revealing a few inches of dirt to dig.
photoKV0563 TDB setting, Bay Ridge, Brooklyn NY
Down to the granite revealing an arrow pointing to the right.
photoKV0563 TDB, Bay Ridge, Brooklyn NY
Closeup of arrow and cross.
photoKV0563 TDB, Bay Ridge, Brooklyn NY
Arrow and cross highlighted.

Documented History (by the NGS)

01/01/1952 by LOCENG (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1952 AT NEW YORK. AT NEW YORK, IN BOROUGH OF BROOKLYN, AT THE INTERSECTION OF 58TH STREET AND 7TH AVENUE, 8.8 FEET NORTHWEST OF NORTHWEST CURB OF 7TH AVENUE, 15 FEET NORTHEAST OF NORTHEAST CURB OF 58TH STREET, AND UNDER AN IRON COVER MARKED MONUMENT BROOKLYN TOPOGRAPHICAL DIVISION ABOUT 1/2 FOOT BELOW LEVEL OF WALK.
01/01/1952 by CGS (GOOD)

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.

Advertising with Us

Return to the Top of the Page