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Details for Benchmark: AI4354

N 39° 38.527 W 075° 05.244 (NAD 83)

Altitude: 128

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

Location:
In GLOUCESTER county, NJ View Original Datasheet
Designation:
4970
Marker Type:
survey disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Mark identified in good condition as described.

[Photos:]
photoThe mark
photoEye level
photoLooking west

I wanted to make this one "official" by posting a picture, so I stopped by today. No problem with water this morning, I found this one easily. In fact, it was kind of dry and dusty.

[Photos:]
photoAI4354
photoStation 4970 in foreground, looking northwest

I was being such a girl, I just didn't want to get my feet wet!

This one was about six inches deep in the soil but still pretty easy to find.

[Photos:]
photo4970

Found as described, and across street from and southeast of Homer L. Ewan American Legion post. Note painted legend in street in photo.

[Photos:]
photoCloseup of station 4970, Franklin Twp., NJ
photoMedium view, station 4970, Franklin Twp., NJ
photoArea view, station 4970, Franklin Twp., NJ

Documented History (by the NGS)

01/01/1940 by NJDCED (MONUMENTED)
07/01/1999 by NJGS (GOOD)
DESCRIBED BY NEW JERSEY GEODETIC SURVEY 1999 (JVS) THE STATION IS LOCATED IN FRANKLIN TOWNSHIP ON THE EAST SIDE OF STATE ROUTE 47. TO REACH THE STATION FROM THE INTERSECTION OF U.S. HIGHWAY 322 EAST AND STATE ROUTE 47 IN THE BOROUGH OF GLASSBORO, GO SOUTH ON STATE ROUTE 47 FOR 4.3 MI (6.9 KM) TO THE STATION ON THE LEFT, OPPOSITE AND ACROSS THE ROAD FROM A DRIVE LEADING TO A ONE STORY FRAME DWELLING, HOUSE NUMBER 3433. THE STATION IS 7.2 M (23.6 FT) EAST FROM THE CENTERLINE OF STATE ROUTE 47, 1.5 M (4.9 FT) EAST SOUTHEAST FROM WOOD UTILITY POLE NUMBER 187, 32.6 M (107.0 FT) NORTH NORTHEAST FROM WOOD UTILITY POLE NUMBER 188 AND 20.0 M (65.6 FT) NORTH FROM THE NORTHERN MOST OF TWO TELEPHONE UTILITY MANHOLES. THE STATION IS ABOUT 0.2 M (0.7 FT) BELOW THE GROUND.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in March 2000.
  • 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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