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Details for Benchmark: LY2797

N 41° 38.261 W 075° 38.180 (NAD 83)

Altitude: 1454

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

Location:
In LACKAWANNA county, PA View Original Datasheet
Designation:
FINN
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

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Documented History (by the NGS)

1/1/1959 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (CGS) THE STATION IS LOCATED IN THE NORTHWEST ANGLE OF A CROSSROAD AND IN THE SOUTHEAST CORNER OF A PASTURE, ABOUT 5 MILES NORTHEAST OF FLEETVILLE, 2.5 MILES SOUTHWEST OF CLIFFORD AND ON PROPERTY OWNED BY MR LUCAS AND NICHOLAS SKROBAK. TO REACH THE STATION FROM THE CAUTION LIGHT AND STATE HIGHWAY 247 IN THE VILLAGE OF CLIFFORD, GO SOUTHWEST ON STATE HIGHWAY 247 FOR 1.45 MILE TO A GRAVELED ROAD ON THE RIGHT. TURN RIGHT AND GO WEST ON A GRAVELED ROAD FOR 0.94 MILE TO A CROSSROAD AND THE STATION AS DESCRIBED. THE STATION MARK, A STANDARD DISK STAMPED FINN 1959, IS SET IN THE TOP OF A SQUARE CONCRETE MONUMENT WHICH PROJECTS ABOUT 2 INCHES ABOVE THE SURFACE OF THE GROUND. IT IS 68 FEET NORTHWEST OF THE CENTER OF THE INTERSECTION OF THE CROSSROAD, 29 FEET NORTHWEST OF A 14-INCH MAPLE TREE WITH A TRIANGULAR BLAZE, 22.4 FEET NORTH-NORTHWEST OF A STANDARD METAL WITNESS POST AND MARKER, 12.5 FEET NORTH OF THE SOUTHEAST PASTURE FENCE CORNER AND 10.7 FEET WEST OF A NORTH AND SOUTH FENCE LINE. REFERENCE MARK 1, A STANDARD DISK STAMPED FINN NO 1 1959, IS CEMENTED IN A DRILL HOLE IN THE TOP OF A 2 BY 3 FOOT BOULDER WHICH PROJECTS ABOUT 4 INCHES ABOVE THE SURFACE OF THE GROUND. IT IS 51 FEET NORTH OF THE CENTER OF A GRAVELED ROAD, 31 FEET NORTH OF AN EAST AND WEST FENCE LINE AND IS ABOUT 2 FEET LOWER THAN THE STATION. REFERENCE MARK 2, A STANDARD DISK STAMPED FINN NO 2 1959, IS CEMENTED IN A DRILL HOLE IN THE TOP OF A 14 BY 24 INCH BOULDER WHICH PROTUDES ABOUT 4 INCHES ABOVE THE SURFACE OF THE GROUND. IT IS 51 FEET SOUTHEAST OF A STANDARD METAL WITNESS POST AND MARKER, 16 FEET WEST OF A NORTH AND SOUTH FENCE LINE, 38.6 FEET WEST OF THE CENTER OF A BLADED ROAD AND IS ABOUT THE SAME ELEVATION AS THE STATION. AN AZIMUTH MARK WAS NOT ESTABLISHED FOR THIS STATION. STATION UHRIN OR STATION RANSOM MAY BE USED AS AN AZIMUTH MARK. HEIGHT OF LIGHT ABOVE STATION MARK 1 METERS.
1/1/1973 by NGS (SEE DESCRIPTION)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 (RH) THE STATION AND REFERENCE MARKS 1 AND 2 WERE RECOVERED AS DESCRIBED AND FOUND TO BE IN GOOD CONDITION.
1/1/1974 by NGS (SEE DESCRIPTION)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (CLN) THE STATION AND ALL MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION AS DESCRIBED IN THE 1959 DESCRIPTION. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 2-1/2 MILES SOUTHWEST OF CLIFFORD.
1/1/1978 by LOCENG (GOOD)
RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1978 (GMB) STATION RECOVERED ALONG WITH REFERENCE MARKS 1 AND 2 IN GOOD CONDITION. DESCRIPTION TO REACH STATION ERRONOUSLY CALLS SOUTHWEST ON STATE HIGHWAY 247 FOR 1.45 MILES SHOULD BE STATE HIGHWAY 322. REFERENCES TO OBJECTS ARE IN ERROR. STATION IS 22 FT NORTH OF SOUTHEAST PASTURE FENCE CORNER. 12.4 FEET NORTH-NORTHWEST OF WITNESS POST (WHICH MAY HAVE BEEN MOVED) REST OF DESCRIPTION IS CORRECT. STATION IS 2 INCHES BELOW SURFACE.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in September 1999.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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