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Details for Benchmark: LX6431

N 41° 15.298 W 072° 48.381 (NAD 83)

Altitude: 0

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

Location:
In NEW HAVEN county, CT View Original Datasheet
Designation:
BISHOP
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
Most reliable and expected to hold position/elevation well.

Reference Points

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Found station and the remaining RM.

[Photos:]
photobenchmark LX6431 station
photobenchmark LX6431 station Bishop close
photobenchmark LX6431 RM 1
photobenchmark LX6431 RM 1 close
photobenchmark LX6431 view from station
Looking toward the Thimble Islands off Branford from station.

Documented History (by the NGS)

01/01/1933 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1933 (GCM) THIS STATION IS LOCATED ON THE SE SHORE OF INDIAN NECK ON A ROCKY POINT TO THE NORTHWARD OF AND JUST INSIDE OF BISHOPS ROCK. IT IS ON THE PRIVATE BEACH BELONGING TO THE RESIDENCE OF PHELPS MONTGOMERY. THIS HOUSE IS ON THE OPPOSITE SIDE OF THE INDIAN NECK ROAD AND IS THE FIFTH HOUSE TO THE WESTWARD OF THE MONTOWESE HOTEL. STATION AND REFERENCE MARKS ARE STANDARD BRONZE DISKS WEDGED IN A DRILL HOLE IN OUTCROPPING BEDROCK AS DESCRIBED IN NOTES 2 AND 12A. THE END OF A PAVED SEAWALL BEARS N 50 DEG W (MAGNETIC) AND IS 11.5 METERS DISTANT. THE LEDGE CARRYING THE STATION IS ABOUT 3 FEET ABOVE HIGH WATER LINE AND IS CUT-OFF FROM MAINLAND AT HIGH WATER. REFERENCE MARK NO.1 IS A SIMILAR OUTCROPPING LEDGE AND BEARS S 70 DEG W (MAGNETIC). REFERENCE MARK NO.2 IS IN THE S EDGE OF THE PAVED SEAWALL TOP AND BEARS N 35 DEG W (MAGNETIC). HEIGHT OF LIGHT ABOVE STATION MARK 4.9 METERS.
01/01/1961 by CGS (SEE DESCRIPTION)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 (GFW) STATION AND R.M.1 WERE RECOVERED IN GOOD CONDITION. R.M.2 WAS DESTROYED IN THE 1938 HURRICANE. THE STATION IS STAMPED, BISHOP 1933 AND THE R.M.1 IS STAMPED, BISHOP NO 1 1933. THE ORIGINAL DESCRIPTION BY G.C.M. IN 1933 IS COMPLETE AND ADEQUATE.
01/06/1991 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1991 (CT) RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in August 1998.
  • The orthometric height was scaled from a topographic map.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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