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Details for Benchmark: KV1181

N 40° 34.217 W 074° 39.133 (NAD 83)

Altitude: 105.57

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

Location:
In SOMERSET county, NJ View Original Datasheet
Designation:
E 26
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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I'll agree with Mr. Magoo. This is the bridge that is one mile west of the station at Raritan. And, no, it is not easy to get to! There is a hole in the rock. That is probably where the disk was. Looks to be gone.

[Photos:]
photoKV1181 Raritan Somerset NJ View East
photoKV1181 Raritan Somerst NJ Mountain Lion?
As I was walking toward the bridge, I heard a loud rustling in the undergrowth, from the north. This is what I saw looking at me, for about five minutes. Certainly enough time to take the picture. The distance is about 500', so I cannot say for sure, but it looks like a mountain lion to me!
photoUntouched photo of critter

I found the correct bridge as per the description. There has been some patch cemenet work done as well as some missing stones.
I couldnt find the disk though. It might be here under the cement.

[Photos:]
photoLooking East
Here is the bridge (not an easy one to get to). Here were looking East
photoLooking West

Documented History (by the NGS)

01/01/1942 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1942 1 MI W FROM RARITAN. 1 MILE WEST ALONG THE CENTRAL RAILROAD OF NEW JERSEY FROM THE STATION AT RARITAN, SOMERSET COUNTY, 0.1 MILE EAST OF MILEPOST 37, 6 RAILS EAST OF AUTOMATIC SIGNAL 363, AT BRIDGE 36-88, IN THE NORTH STONE WALL, AND ABOUT 6 INCHES LOWER THAN THE TRACK.
01/01/1955 by USGS (MARK NOT FOUND)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1955 MARK NOT FOUND.
05/07/1994 by USPSQD (MARK NOT FOUND)
RECOVERY NOTE BY US POWER SQUADRON 1994 MARK NOT FOUND.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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