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Details for Benchmark: KU0985

N 40° 48.283 W 073° 47.450 (NAD 83)

Altitude: 14.6

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

Location:
In BRONX county, NY View Original Datasheet
Designation:
Z 339 USLHS
Marker Type:
survey disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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My son and I were visiting the college for the Maritime College Eagle Scout Fraternity Camporee with our Troop. I had some time to locate this benchmark.

[Photos:]
photoTop of post
photoView

I go to school here

The top of the concrete post with the disk has been sheared or broken off (possibly by some equipment) so that only the stem of the disk survives.

[Photos:]
photoKU0985 "Z 339 USLHS", Throgs Neck, Bronx NY
The remnant of the concrete post near the fire hydrant which is mentioned in the description. The old fort is in the background.
photoKU0985 "Z 339 USLHS", Throgs Neck, Bronx NY
The top of the concrete post showing the stem of the missing disk.

Documented History (by the NGS)

01/01/1952 by USLHS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1952 AT NEW YORK. AT NEW YORK, IN BOROUGH OF BRONX, AT FORT SCHUYLER, 150 FEET NORTH AND ACROSS A CONCRETE DRIVE FROM THROGS NECK LIGHT TOWER, 58.6 FEET NORTH OF NORTH CORNER OF LIGHT KEEPERS HOUSE, 9 FEET NORTH-NORTHEAST OF A FIRE HYDRANT, 9 1/2 FEET NORTHWEST OF NORTHWEST CURB OF CONCRETE DRIVE, 12.2 FEET SOUTH OF EAST CORNER OF OLD FORT SCHUYLER (NOW MARITIME COLLEGE), ABOUT 2 FEET ABOVE CONCRETE DRIVE AND SET IN THE TOP OF A CONCRETE POST PROJECTING 6 INCHES.
01/01/1952 by NGS (GOOD)
01/01/1983 by NY-005 (GOOD)
RECOVERY NOTE BY BOROUGH OF BRONX NEW YORK 1983 RECOVERED IN GOOD CONDITION.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (PS) RECOVERED IN GOOD CONDITION.

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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