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Details for Benchmark: LY2782

N 41° 42.917 W 075° 33.659 (NAD 83)

Altitude: 2692

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

Location:
In SUSQUEHANNA county, PA View Original Datasheet
Designation:
ELK 2
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

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Found this with the family. Nearby (50 yards away) small mound is the highest point in Susquehanna County, and highest point in eastern PA.

ctchipper

Found in good condition after searching for high point. Station mark was found. Reference marks weren't found.

[Photos:]
photoLY2782 (NGS Benchmark)

Documented History (by the NGS)

01/01/1959 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1959 (CGS) STATION IS LOCATED ON THE NORTH KNOB OF ELK MOUNTAIN, ABOUT 4 MILES WEST OF UNION DALE, 5 MILES NORTHEAST OF CLIFFORD AND 106 FEET NORTHWEST OF THE CENTER OF ELK MOUNTAIN LOOKOUT TOWER. STATION IS REACHED FROM THE TRAFFIC LIGHT IN THE NORTHWEST EDGE OF CLIFFORD. GO NORTHWEST ON U.S. HIGHWAY 106 FOR 2.95 MILES TO A PAVED ROAD RIGHT AND A SERVICE STATION IN THE NORTHWEST ANGLE. TURN RIGHT AND GO NORTH ON STATE ROUTE 57045 FOR 1.52 MILES, JUNCTION WITH STATE ROUTE 57044. TURN RIGHT AND FOLLOW ROUTE 57044 FOR 0.48 MILE, JUNCTION WITH ROUTE 57739, CONTINUE STRAIGHT AHEAD, ON ROUTE 57044 FOR 1.28 MILES, AZIMUTH MARK ON THE LEFT, CONTINUE STRAIGHT AHEAD, ON ROUTE 57044 FOR 1.53 MILES, SHARP REVERSE FORK RIGHT. TURN RIGHT AND FOLLOW A PRIVATE GRAVELED ROAD, UPHILL FOR 0.15 MILE, SUMMIT OF HILL, 5 MASTS, ELK MOUNTAIN LOOKOUT TOWER AND STATION. STATION MARK IS A STANDARD DISK, STAMPED ELK 2 1959, SET IN THE TOP OF A SQUARE CONCRETE MONUMENT, PROJECTING ABOUT 1 INCH. IT IS ABOUT 106 FEET NORTHWEST OF THE CENTER OF THE LOOKOUT TOWER, 65 FEET WEST-NORTHWEST OF A TRACK ROAD, 57 FEET WEST OF THE NORTHWEST CORNER OF A SMALL SHEET IRON BUILDING AND 4.9 FEET EAST OF A STANDARD METAL WITNESS POST. REFERENCE MARK 1 IS A STANDARD U.S. GEOLOGICAL SURVEY MARK, STAMPED TT STA. NO 24A 1929, CEMENTED IN A DRILL HOLE, IN THE TOP OF A SQUARE CONCRETE BASE WHICH IS FOR THE STEPS WHICH LEAD TO THE TOP OF THE LOOKOUT TOWER. REFERENCE MARK 3 IS A STANDARD DISK, STAMPED ELK 2 NO 3 1959, CEMENTED IN A DRILL HOLE, IN THE TOP OF LIMESTONE BEDROCK THAT IS ABOUT 2 INCHES BELOW THE GROUND SURFACE. IT IS ABOUT 34 FEET NORTHWEST OF THE TENNESSEE GAS COMPANY, RADIO MAST AND ABOUT 31 FEET NORTH OF THE NORTHWEST CORNER OF THE SMALL SHEET IRON BUILDING. AZIMUTH MARK IS A STANDARD DISK, STAMPED ELK 2 1959, SET IN THE TOP OF A SQUARE CONCRETE MONUMENT PROJECTING ABOUT 1 INCH. IT IS ABOUT 18 FEET WEST OF THE CENTER OF STATE ROUTE 57044, 2 FEET EAST OF A WIRE FENCE, 20 FEET SOUTH OF A 24- INCH MAPLE TREE AND 3.2 FEET NORTHEAST OF A STANDARD METAL WITNESS POST. TENNESSEE GAS TRANSMISSION CO., RADIO MAST IS A 3-STEEL LEG LATTICED TYPE STRUCTURE, SET IN A TRIANGULAR CONCRETE BASE. THE STRUCTURE IS APPROXIMATELY 110 FEET IN HEIGHT, ORANGE AND WHITE IN COLOR AND HAS AN ANTENNA AND RED LIGHT MOUNTED ON THE TOP. IT IS ABOUT 100 FEET NORTH OF THE LOOKOUT TOWER AND ABOUT 9 FEET NORTHEAST OF THE SMALL SHEET IRON BUILDING. ELK MOUNTAIN LOOKOUT TOWER IS A 4-STEEL LEGGED STRUCTURE WITH AN OBSERVATION ENCLOSURE MOUNTED AT THE TOP. IT IS ABOUT 70 FEET IN HEIGHT AND THE CENTER OF THE TOWER IS ABOUT 53 FEET NORTH-NORTHEAST OF THE NORTHEAST CORNER OF A LARGE COMMUNICATIONS BUILDING. HEIGHT OF LIGHT ABOVE STATION MARK 14 METERS.
01/01/1974 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. REFERENCE MARK 3 WAS REPORTED NOT FOUND IN 1973. I FOUND IT UNDER 2 INCHES OF GROUND AS STATED IN THE 1959 DESCRIPTION. A NEW WITNESS POST WAS ESTABLISHED 1.8 FEET EAST OF THE AZIMUTH MARK. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 4 MILES WEST OF UNION DALE.

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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