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Details for Benchmark: LY0568

N 41° 19.467 W 074° 48.050 (NAD 83)

Altitude: 502.19

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

Location:
In PIKE county, PA View Original Datasheet
Designation:
C 91 =503 USGS
Marker Type:
survey disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Two BM's on the same building! Makes the job easier for sure.

[Photos:]
photoThe disk under the window
photoThe ledge under the window where the dish is.

Very cool place for a benchmark!!

Refind for benchmarking Poker Fun Run

[Photos:]
photoLY0568 Milford Pike Pa Close Up
photoLY0568 Milford Pike Pa Area View

Found as described.

Found mark as described.

[Photos:]
photoc91 503USGS 20452.jpg
photoc91 window sill 20453.jpg

Found in good condition.

[Photos:]
photoLY0568 Disk
Closeup of LY0568 Disk located on the right side of the Pike County County Courthouse.
photoLY0568 Disk
Closeup of LY0568 Disk located on the right side of the Pike County County Courthouse.
photoLY0568 Overview
Overview of LY0568 Disk location on the right side of the Pike County County Courthouse.

Found it.®

Set horizontally on top of the water table on the NE side of the building.

[Photos:]
photoLY0568 Milford, Pike Cty PA
photoLY0568, Milford, Pike Cty, Pa
View with GPS
photoLY0568, Milford, Pike Cty, Pa, view SW
N 41° 19.498 W 074° 48.058

After locating LY0567 on the southeast side of the county courthouse, we walked right around to the northeast side and found this one. There was no shrubbery to contend with. The marker is set horizontally on a small ledge just beneath the windows. It's in very good condition.

Zhanna and Aaron

[Photos:]
photoLY0568, Pike County, PA
photoLY0568 located on the northeast side of the courthouse.

I looked for this last summer, but huge bushes blocked acess to this spot - all clear now!

[Photos:]
photoBenchmark
The benchmark on the side of the building
photoThe Beautiful Pike County Courthouse

LY0568 marked with triangle, Elevation 503 feet, found in good condition at NE side of courthouse, set vertically in wall about 3 feet above ground level. . . . patrick & shirley

[last edit: 10/5/2002 5:21:05 AM PST]

[Photos:]
photoLY0568 found in good condition

Documented History (by the NGS)

1/1/1921 by USGS (MONUMENTED)
1/1/1956 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1956 AT MILFORD. AT MILFORD, AT THE COUNTY COURTHOUSE, ON TOP OF THE WATER TABLE AT THE NORTHEAST SIDE OF THE BUILDING, 28.2 NORTHWEST OF THE SOUTHEAST CORNER OF THE BUILDING AND 2.7 FEET ABOVE THE GROUND.
1/1/1959 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1959 RECOVERED IN GOOD CONDITION.
1/1/1978 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 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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