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Details for Benchmark: KV1384

N 40° 35.133 W 074° 47.500 (NAD 83)

Altitude: 190.22

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

Location:
In HUNTERDON county, NJ View Original Datasheet
Designation:
H 29
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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This benchmark was destroyed earlier this year when the bulkhead was replaced.

Found it.® As we drove by.

N 40° 35.143 W 074° 47.528

For some reason, I had this programmed into my GPS. On the drive down to Stockton, Gupy reported the benchmark nearby, and I could see it as I drove by. I stopped to find it on the drive back.
Hand-held GPS coordinates: N 40 35 08.6 W 074 47 31.7.

[Photos:]
photoKV1384 Readington Hunterdon NJ Close Up
photoKV1384 Readington Hunterdon NJ View Southwest
Along Holland Brook.

Still there. the Disk is in fine shape , but the 'massive' structure (bridge) is crumbling and cracking. This may get tagged poor soon because of stability reasons.

[Photos:]
photoThe Disk
photoThe Bridge Looking SW
Not to bad from this view. 1 major crack behind the Disk.
photoFrom below
You can see the extensive bracing as well as the large amounts of concrete falling off the bridge.

Good Condition. Along County Road 523 (tar road) at bridge over Holland Brook.

[Photos:]
photoMark w/GPS
photoLooking SW

Documented History (by the NGS)

01/01/1942 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1942 2.4 MI SW FROM WHITE HOUSE STATION. 2.4 MILES SOUTHWEST ALONG A TAR ROAD FROM THE LEHIGH VALLEY RAILROAD STATION AT WHITE HOUSE STATION, HUNTERDON COUNTY, AT A SMALL CONCRETE ARCH BRIDGE OVER A STREAM, IN THE TOP OF THE NORTH WING WALL, AND ABOUT 2 FEET HIGHER THAN THE PAVEMENT.
11/15/1998 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1998 RECOVERED IN GOOD CONDITION.

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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