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Details for Benchmark: LY2801

N 41° 30.711 W 075° 59.330 (NAD 83)

Altitude: 820

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

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

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N 41° 30.713 W 075° 59.329

Our first attempt to locate this set of marks occurred on Columbus Day. We arrived on the scene eager to search, only to find that the marks could not be reached without crossing private property. Rich knocked on the open farm house door several times and we searched the barn across the street for someone to ask, but that day we had no luck. Aside from many cats wandering the grounds and a cautiously friendly dog who greeted us, the place seemed deserted, as if the human inhabitants had just picked up and left in an instant. (We did wonder why when we drove away, the door that had previously been open was now closed. Perhaps a child was inside who didn't want to answer the door?)

A bit less than two weeks later, we tried again. This time, the property owner was holding a garage sale—apparently this is a weekly function of his—and he was outside arranging his goods in front of the shed when we arrived. The man was friendly and allowed us immediate access to the area, and wished us well.

We climbed atop the cliff and aside from some necessary “gardening” to remove thorns that were thickly grown, enormous and dangerously sharp, we had no further difficulties. This is a scenic and beautiful spot offering views of nearby farm fields and the mountains surrounding Tunkhannock. All the marks were located with ease using the historic description, and they are all in very good condition.

[i]A report on the condition of these marks was submitted to NGS, along with the following recovery note:[/i]

The station mark and reference marks 1 and 2 were recovered in good condition. The azimuth mark was viewed from the station. The 30-inch oak tree could not be found.

Zhanna

[Photos:]
photoLY2801, Wyoming County, PA
photoEye-level view of the station mark on the ledge.
photoLooking NE toward the powerline pole.
photoLooking NW.

photoLY2801 RM1
photoEye-level view of the mark on the boulder.
photoLooking NE toward the boulder that holds the mark.
photoLooking SE toward the station.

photoLY2801 RM2
photoEye-level view of the mark on the outcropping.
photoView NNE, showing the powerline pole.
photoLooking SE toward the farm.

photoAT&T (now American Tower) Microwave Tower.

N 41° 30.711 W 075° 59.330

[B]Recovered in good condition.[/B]

This second order triangulation station is situated on a brush-covered hillside near the village of Rosengrant, southwest of Tunkhannock. From Tunkhannock at the intersection of Rt. 6 take Rt. 29 south for roughly 2.3 miles (N41° 30.818' W075° 58.109'), turn right onto Hickory Road (T377) and bear left immediately at the Y fork for about 0.8 miles to a Y fork (N41° 30.983' W075° 58.918'), left on Sandbank Road for 0.55 miles to a white farmhouse on the right and a storage shed just beyond. Pack northwest at the shed for roughly 125 yards passing through an opening in a wire fence, along the left edge of a hay field, then on an ATV track leading uphill on the right of an outcropping rock ledge and to the station atop the ledge on the left. A handheld GPS receiver made locating the station an easy task.

The historical description leads reliably to the station and the two reference marks. Powerpole #9550301 still exists, but the 30-inch oak tree was not found. The station mark and both reference marks were found as described. The ATT microwave tower used for the azimuth (located near LY2774 triangulation station EVANS ET) is easily observed. There is no PID for this landmark station.

At the station a Garmin GPSmap76 receiver with active remote antenna was used to record WAAS-corrected coordinates which were identical to the adjusted coordinates listed on the NGS datasheet. All marks are well exposed, in good condition, and the stamped designations are legible. ~Rich in NEPA~

[Photos:]
photoLY2801, “CLIFF ET 1968.” Wyoming County, PA.
photoGPSr and the station mark.
photoEyelevel view of station mark and setting.
photoOrientation view, facing northeast and powerpole.
photoOrientation view, facing southeast, overlooking ledge.
photoOrientation view, facing northeast, Zhanna at RM1 (look closely).

photoLY2801, “CLIFF ET 1968 NO. 1”
photoGPSr and the reference mark.
photoEyelevel view of reference mark and setting.
photoOrientation view, facing southwest and the station.
photoOrientation view, reference mark indicated.

photoLY2801, “CLIFF ET 1968 NO. 2”
photoGPSr and the reference mark.
photoEyelevel view of reference mark and setting.
photoOrientation view to north-northeast, with powerpole.

photoPowerpole ID tag.
photoAzimuth landmark ATT Microwave Tower, indicated.
photoMicrowave tower at American Tower facility.

Documented History (by the NGS)

1/1/1968 by USGS (MONUMENTED)
DESCRIBED BY US GEOLOGICAL SURVEY 1968 (AIM) STATION IS LOCATED ABOUT 8.0 MILES NORTH OF HARVEYS LAKE AND ABOUT 4.5 MILES SOUTHWEST OF TUNKHANNOCK. TO REACH FROM JUNCTION OF STATE HIGHWAYS 309 AND 292 NEAR EVANS FALLS, GO NORTH ON HIGHWAY 309 FOR 2.7 MILES TO T-ROAD LEADING TO MEHOOPANY, TURN LEFT ON MACADAM ROAD AND GO 1.4 MILES TO T-ROAD, TURN RIGHT AND GO 1.0 MILE ON GRAVELED ROAD TO FARM BUILDINGS AND STATION ON LEFT. THE STATION MARK IS A STANDARD TABLET STAMPED CLIFF ET 1968 SET IN DRILL HOLE IN LARGE ROCK LEDGE. IT IS 420 FEET NORTHWEST OF NORTHWEST CORNER OF MAIN BARN, 360 FEET NORTHEAST OF NORTHEAST CORNER OF SINGLE STORY HOUSE, 350 FEET NORTH OF CENTERLINE OF ROAD, 102 FEET SOUTH OF 30-INCH OAK TREE, 41.6 FEET SOUTHWEST OF POWER POLE NO. 9550301 AND 16 FEET NORTHEAST OF 30-INCH ELM TREE. REFERENCE MARK NO. 1 IS A STANDARD REFERENCE MARK TABLET STAMPED CLIFF ET 1968 RM 1 SET IN DRILL HOLE IN 6- BY 12-FOOT BOULDER PROJECTING ABOUT 3 FEET. IT IS 72 FEET SOUTHWEST OF 30-INCH OAK TREE AND 30 FEET NORTHEAST OF 6- BY 6-FOOT ROCK. REFERENCE MARK NO. 2 IS A STANDARD REFERENCE MARK TABLET STAMPED CLIFF ET 2968 RM 2 SET IN DRILL HOLE IN POINT OF ROCK OUTCROP. IT IS 34 FEET NORTHEAST OF 30-INCH ELM TREE, AND 9.7 FEET SOUTH OF POWER POLE NO. 9550301. THE AZIMUTH MARK IS THE CENTERLINE OF THE ATT MICROWAVE TOWER NEXT TO STATION EVANS ET 1968 AND IS VISIBLE FROM GROUND. HEIGHT OF LIGHT ABOVE STATION MARK - 5.0 FEET.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in January 1999.
  • The orthometric height was scaled from a topographic map.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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