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Details for Benchmark: LY2618

N 41° 08.890 W 074° 31.806 (NAD 83)

Altitude: 1429

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

Location:
In SUSSEX county, NJ View Original Datasheet
Designation:
HAMBURGH 1882
Marker Type:
triangulation station disk
Setting:
in rock outcrop
Stability:
Most reliable and expected to hold position/elevation well.

Reference Points

Must Read!

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This one intrigued me, so I went for it. It is located in Hamburg Mountain Wildlife Management Area. I parked at a parking area/large rock ledge on Sand Pond Road, just before the 'No Trespassing' signs. From there I bushwhacked the .35 mile to the station. Down to, and across, the stream, then a fairly gentle two hundred foot climb up Hamburg Mountain.
The station is located in bedrock 13 feet south of a five foot boulder, and eleven feet north of an exposed rock ledge with a guy anchor for the 1936 tower. The station is underneath two rocks with a piece of pink surveying tape.
Reference Mark 2 was recovered at hand-help GPS coordinates of N 41º 08.883 W 074º 31.801. Reference Mark 3 was recovered at hand-held GPS coordinates of N 41º 08.891 W 074º 31.801. Unble to locate RM1 (No directions or distances are listed.) Also recovered original Reference Mark 1 (cross cut on south face of large boulder). Unable to locate original Reference Marks 2 or 3. I also found two of the footings of the 1936 tower.
This is the only place I've seen Hamburgh with the 'h' at the end.

[Photos:]
photoLY2618 Hardyston Sussex NJ Close Up
photoLY2618 Hardyston Sussex NJ View South
photoLY2618 Hardyston Sussex NJ Original RM1
photoLY2618 Original RM1 View North from Station
photoLY2618 RM2 Hardyston Sussex NJ Close Up
photoLY2618 RM2 Hardyston Sussex NJ View North
Toward station
photoLY2618 RM3 Hardyston Sussex NJ Close Up
photoLY2618 Anchor for guy wire for tower
Oh! Is this how they get these rocks up to the tops of mountains!
photoLY2618 Northeast Footing for tower
photoLY2618 Southeast footing for tower

Documented History (by the NGS)

01/01/1882 by CGS (MONUMENTED)
01/01/1908 by CGS (SEE DESCRIPTION)
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
01/01/1936 by NJGS (GOOD)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1936 STATION RECOVERED AS DESCRIBED WITH THE FOLLOWING EXCEPTIONS--COPPER BOLT WHICH ORIGINALLY MARKED THE STATION HAS BEEN REMOVED BUT THE REMAINING DRILL HOLE IN THE LEDGE ROCK, AND THE ROCK ITSELF, ARE IN EXCELLENT CONDITION. REFERENCE MARKS ARE ALL IN GOOD CONDITION. DISTANCES AND BEARINGS FROM STATION TO OLD REFERENCE MARKS SHOULD READ AS FOLLOWS--R.M.NO.1 N 19 DEG E, 11.92 FEET, R.M.NO.2 S 18 DEG E, 13.11 FEET, R.M.NO.3 N 80 DEG E, 2.64 FEET. NO TRACES REMAIN OF THE ORIGINAL WOODEN TOWER. IT WAS REPLACED BY A 40-FOOT LOOKOUT TOWER WHICH HAS RECENTLY BEEN REMOVED, BUT THE FOOTINGS AND ALSO THE EYE BOLTS FOR GUY WIRES OF THE LATTER TOWER REMAIN.
01/01/1936 by NJGS (SEE DESCRIPTION)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1936 STATION RECOVERED IN GOOD CONDITION AS DESCRIBED. IT WAS REMARKED WITH A STANDARD U.S.C. AND G.S. DISK STAMPED HAMBURGH 1882-1936, SET IN THE ORIGINAL 1-INCH DRILL HOLE IN LEDGE ROCK. THREE NEW REFERENCE MARKS WERE SET. REFERENCE MARK NO.1 IS A STANDARD STATE SURVEY DISK SET IN THE TOP OF A LARGE BOULDER. REFERENCE MARK NO.2 IS A STANDARD STATE SURVEY DISK, SET IN A LARGE FLAT BOULDER. REFERENCE MARK NO.3 IS A STANDARD STATE SURVEY DISK, SET IN LEDGE ROCK OUTCROP. AZIMUTH MARK IS THE APEX OF HIGH POINT MONUMENT. SOME CLEARING MAY BE NECESSARY IN THE FUTURE TO SEE THIS FROM THE GROUND, AS TREES WILL GROW AGAIN ON LINE.
04/05/1991 by NJGS (GOOD)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1991 THE STATION IS LOCATED IS HARDYSTON TOWNSHIP ON ONE OF THE SUMMITS OF THE HAMBURGH MOUNTAINS, ABOUT 2.75 MI (4.43 KM) SOUTHEAST OF THE BOROUGH OF HAMBURG. TO REACH THE STATION FROM THE INTERSECTION OF N.J. ROUTES 23 AND 94 IN THE BOROUGH OF HAMBURG, GO 1.15 MI (1.85 KM) SOUTH ON N.J. ROUTE 23 TO THE JUNCTION WITH COUNTY ROAD 517, HARDYSTON ROAD, ON THE LEFT. TURN LEFT ON COUNTY ROAD 517 AND G0 1.6 MI (2.6 KM) TO SAND POND ROAD ON THE RIGHT. TURN RIGHT ON SAND POND ROAD, AND GO 1.25 MI (2.01 KM) UPHILL TO A METAL PIPE GATE. GO THROUGH THE GATE, STILL GOING UPHILL TO A FORK IN THE ROAD. TAKE THE RIGHT FORK AND GO TO THE FIRST DRIVE ON THE RIGHT, A FRAME HOUSE BELONGING TO MR. BERRY IS ON THE LEFT SIDE OF THE DRIVE. GO THROUGH THE BACKYARD AND PACK DOWNHILL, CROSSING A SMALL BROOK AND THEN PACK UPHILL FOLLOWING THE FLAGGED TRAIL TO THE SUMMIT AND THE STATION. THE STATION IS A STANDARD DISK, STAMPED HAMBURGH 1882 1936, SET FLUSH IN A DRILL HOLE IN A LARGE ROCK OUTCROP. MR. BERRY REQUESTS THAT HE BE NOTIFIED PRIOR TO OCCUPATION OF THE MARK. ANOTHER LOCAL PROPERTY OWNER, MR. BUIST PHONE 201 827 4043, ALSO REQUESTS THE SAME COURTESY.
09/17/1992 by (GOOD)
RECOVERED 1992 RECOVERED IN GOOD CONDITION.
09/16/1993 by NJGS (GOOD)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1993 THE STATION IS LOCATED IS HARDYSTON TOWNSHIP ON ONE OF THE SUMMITS OF THE HAMBURGH MOUNTAINS, ABOUT 2.75 MI (4.43 KM) SOUTHEAST OF THE BOROUGH OF HAMBURG. TO REACH THE STATION FROM THE INTERSECTION OF STATE ROUTES 23 AND 94 IN THE BOROUGH OF HAMBURG, GO 1.15 MI (1.85 KM) SOUTH ON STATE ROUTE 23 TO THE JUNCTION WITH COUNTY ROAD 517, HARDYSTON ROAD, ON THE LEFT. TURN LEFT ON COUNTY ROAD 517 AND G0 1.6 MI (2.6 KM) TO SAND POND ROAD ON THE RIGHT. TURN RIGHT ON SAND POND ROAD AND GO 1.25 MI (2.01 KM) UPHILL TO A METAL PIPE GATE. GO THROUGH THE GATE, STILL GOING UPHILL TO A FORK IN THE ROAD. TAKE THE RIGHT FORK AND GO TO THE FIRST DRIVE ON THE RIGHT, A FRAME HOUSE BELONGING TO MR. BERRY IS ON THE LEFT SIDE OF THE DRIVE. GO THROUGH THE BACKYARD AND PACK SOUTHWEST ALONG THE SOUTHEAST EDGE OF THE WOODS, DOWNHILL, CROSSING A SMALL BROOK AND THEN PACK UPHILL FOLLOWING THE TRAIL TO A JUNCTION WITH AN EAST WEST PATH, TURN RIGHT AND GO 5 PACES TO A JUNCTION WITH THE MAIN TRAIL RUNNING NORTH TO SOUTH, TURN LEFT AND GO NORTH ABOUT 85 PACES TO A PAIR OF 2 M (6.6 FT) TO 2.5 M (8.2 FT) BOULDERS ON THE LEFT, TURN RIGHT AND GO WEST ABOUT 40 PACES CROSSING A DITCH, CONTINUE FOR ABOUT 2 MINUTES WESTERLY TO A DIM PATH RUNNING SOUTH SOUTHWEST TURN LEFT AND PACK SOUTH SOUTHWEST UPHILL FOR ABOUT 15 MINUTES TO THE SUMMIT AND THE STATION SET IN A DRILL HOLE IN A ROCK OUTCROP IN THE APPROXIMATE CENTER OF A CLEARED AREA. THE STATION IS A STANDARD DISK, STAMPED HAMBURGH 1882 1936. MR. BERRY REQUESTS THAT HE BE NOTIFIED PRIOR TO OCCUPATION OF THE MARK. ANOTHER LOCAL PROERTY OWNER, MR. BUIST PHONE 201 827 4043, ALSO REQUESTS THE SAME COURTESY.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in May 1999.
  • The orthometric height was determined by GPS observations and a high-resolution geoid model.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.

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