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Details for Benchmark: KV6906

N 40° 42.813 W 074° 24.451 (NAD 83)

Altitude: 217

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

Location:
In MORRIS county, NJ View Original Datasheet
Designation:
27809
Marker Type:
bench mark disk
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

Must Read!

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Happy New Year. Found with no problem although altitude number is hard to read.

Easy benchmark find on a nice winter afternoon. Just as described below. Pics made this one easy.

Easy find on this Benchmark. Sorry no picture, we didn't have our camera and we were doing this from memory.

Easy find by description and coordinates. On northwest balustrade of Passaic Avenue Bridge over the Passaic River, between Morris and Union Counties.

[Photos:]
photoKV6906 Chatham Twp Morris NJ Close Up
photoKV6906 Chatham Twp Morris NJ Close Up
photoKV6906 Chatham Twp Morris NJ View South
The Passaic River is high due to snow melt.

I found the area where this is with the quadrants, and it is on a slope not far from the sidewalk, I didn't want to fall into the waterway, so I didn't try to dig for it, but I took a picture as to where it is, and put my yellow GPS two feet from it, as it is in the grass and I didn't want my GPS to fall down the slope, nice area, Sparkie48
July 17, 2005

Documented History (by the NGS)

Unknown by (MONUMENTED)
10/07/1992 by NJGS (GOOD)
DESCRIBED BY NEW JERSEY GEODETIC SURVEY 1992 THE STATION IS LOCATED IN CHATHAM TOWNSHIP ON THE SOUTH SIDE OF A BRIDGE CARRYING PASSAIC STREET OVER THE PASSAIC RIVER ON THE MORRIS AND UNION COUNTY LINE. TO REACH THE STATION FROM THE INTERSECTION OF INTERSTATE HIGHWAY 78 AND HILLCREST ROAD, COUNTY ROAD 531, AT INTERCHANGE 40, GO NORTH ON HILLCREST ROAD FOR 1.05 MI (1.69 KM) TO THE CROSSROADS INTERSECTION WITH COUNTY ROAD 622. BEAR TO THE LEFT AND CONTINUE NORTH ON HILLCREST ROAD FOR 0.75 MI (1.21 KM) TO THE CROSSROADS INTERSECTION WITH VALLEY ROAD, COUNTY ROAD 512, TO THE EAST AND WEST AND MOUNTAIN AVENUE, COUNTY ROAD 638 TO THE NORTH. TURN RIGHT AND GO EAST ON VALLEY ROAD, COUNTY ROAD 512 FOR 0.85 MI (1.37 KM) TO THE UNION COUNTY LINE. CONTINUE EAST ON SPRINGFIELD AVENUE, COUNTY ROAD 512 FOR 2.95 MI (4.75 KM) TO THE INTERSECTION WITH SOUTH STREET. TURN LEFT AND GO NORTH NORTHWEST ON SOUTH STREET FOR 0.5 MI (0.80 KM) TO THE BRIDGE, AND THE STATION ON THE LEFT JUST PAST THE COUNTY LINE, SET FLUSH IN THE TOP OF THE NORTHWEST CONCRETE PARAPET PYLON, WITH THE MORRIS COUNTY 1975 NAMEPLATE. THE STATION IS 8.7 M (28.54 FT) SOUTHWEST FROM THE CENTERLINE OF PASSAIC STREET, 2.0 M (6.56 FT) SOUTHWEST FROM THE SOUTHWEST CURB OF PASSAIC STREET, 7.5 M (24.61 FT) SOUTH SOUTHWEST FROM AN INLET ON THE WEST SIDE OF PASSAIC STREET, 7.0 M (22.97 FT) SOUTH SOUTHEAST FROM A LARGE UTILITY MANHOLE ADJACENT TO THE STEEL GUIDE RAIL AT THE NORTHWEST CORNER OF THE BRIDGE AND 23.7 M (77.76 FT) NORTHWEST FROM THE CENTERLINE OF THE BRIDGE. A TRIVET WILL MAKE OBSERVATIONS ON THE STATION EASIER. THE DISK HAS BEEN MARRED AND THE STAMPING OF THE ELEVATION VALUE IS DIFFICULT TO READ.

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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