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Details for Benchmark: LY0629

N 41° 22.150 W 074° 41.367 (NAD 83)

Altitude: 438.8

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

Location:
In ORANGE county, NY View Original Datasheet
Designation:
U 140 RESET 1959
Marker Type:
bench mark disk
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

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Documented History (by the NGS)

01/01/1959 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1959 0.2 MI SE FROM PORT JERVIS. THE MARK IS LOCATED AT PORT JERVIS, ABOUT 0.25 MILE SOUTHEAST ALONG THE ERIE RAILROAD FROM THE STATION, 9.5 FEET SOUTH OF MILEPOST 87 AND 8 FEET EAST OF THE CENTERLINE OF THE MOST EASTERLY TRACKS SET IN CONCRETE 1 INCH ABOVE THE GROUND.
01/01/1978 by NGS (MARK NOT FOUND)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 MARK NOT FOUND.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The geoid height was determined by GEOID99.

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