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Details for Benchmark: LY0567

N 41° 19.467 W 074° 48.033 (NAD 83)

Altitude: 502.26

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

Location:
In PIKE county, PA View Original Datasheet
Designation:
K 10
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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Two BM's on the same building. First time that I have found that.

[Photos:]
photoThe disk K-10
photoFront of the building. Disk on the left, top step

Found as described.

Found disk as described.

[Photos:]
photok10 20448.jpg

Found disk in good condition.

[Photos:]
photoLY0567 Disk
Closeup of LY0567 Disk located on the front of the Pike County County Courthouse.
photoLY0567 Overview
Overview of LY0567 Disk location on the front of the Pike County County Courthouse.

Found it.®

Easy find. The top step is blue stone, not cement.

[Photos:]
photoLY0567, Milford, Pike Cty, Pa Close up
photoLY0567 Milford, Pike Cty, Pa, with GPS
photoLY0567 Milford, Pike Cty, Pa View NW

Not to bad, Some fun in the sun and rain aswell!

N 41° 19.472 W 074° 48.064

This was our first benchmark find on a cold and windy Sunday. The marker was very easy to locate due to the accurate description. It is still in very good condition.

Zhanna and Aaron

[Photos:]
photoLY0567, Pike County, PA
photoPike County Courthouse steps...
The benchmark is located just to the right of the can in front of the near door.

LY0567 marked K10 1932 Elev 502.845 feet found in good condition, set in the concrete step of the main entrance to the county courthouse. . . . patrick & shirley

[Photos:]
photoLY0567 in good condition

Lovely Thursday afternoon. Walked right up to it. Excellent condition, still can read the elevation above sea level. Easy find. 4 Fun and Dog

Documented History (by the NGS)

1/1/1932 by CGS (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 SOUTHWEST END OF THE TOP CONCRETE STEP AT THE SOUTHEAST ENTRANCE TO THE BUILDING AND 2.4 FEET SOUTHWEST OF THE CENTER OF ENTRANCE.
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. The observed gravity was obtained from relative gravimeter ties to the IGSN71 gravity network.

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