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Details for Benchmark: KV2041

N 40° 24.817 W 075° 02.350 (NAD 83)

Altitude: 91.68

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

Location:
In HUNTERDON county, NJ View Original Datasheet
Designation:
13
Marker Type:
bolt
Setting:
retaining walls, concrete ledge, etc.
Stability:
May hold, but of type commonly subject to surface motion.

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Found it while biking the D&R canal trail.

[Photos:]
photoKV2041 marker bolt 13
photoKV2041 from edge of the rail trail.
N 40° 24.823 W 075° 02.375

Easy find on an easy hike along the towpath from Bulls Island. The orange paint definitely helps! Hand-held GPS coordinatesL N 40 24 49.4 W 75 02 22.5.

[Photos:]
photoKV2041 Delaware Hunterdon NJ Close Up
photoKV2041 Delaware Hunderdon NJ View Southwest
Toward Bulls Island
N 40° 24.819 W 075° 02.373

At first I looked on the wrong side of the culvert. Once I switch sides I found it very quickly. This is on the North side of the path.
It is at the Easertly end of the head wall. Coordinates were off a ways . posted my corrections above.

[Photos:]
photoKV2041 - 13 - Looking West
Looking down the path o the West. I had walked up the path from Bulls Island Park
photoKV2041 - 13 - Bolt
The bolt had some paint from past recovery. The designation was nicely chiseled right into the headwall. it clearly reads BM 13

Documented History (by the NGS)

Unknown by PRR (MONUMENTED)
01/01/1956 by CGS (GOOD)
DESCRIBED BY COAST AND GEODETIC SURVEY 1956 3.7 MI NW FROM STOCKTON. 3.7 MILES NORTHWEST ALONG THE PENNSYLVANIA RAILROAD FROM THE STATION AT STOCKTON, 0.4 MILE NORTHWEST OF THE ROAD CROSSING AT RAVEN ROCK, ON TOP OF THE SOUTHEAST END OF THE NORTHEAST HEADWALL OF A LARGE ARCHED CULVERT, 12.3 FEET NORTHEAST OF THE NORTHEAST RAIL, 0.8 FOOT NORTHWEST OF THE SOUTHEAST END OF THE HEADWALL AND 2 FEET BELOW THE LEVEL OF THE TRACK. NOTE-- THE LETTERING BM IS CHISELED IN THE HEADWALL 0.4 FOOT SOUTHWEST OF THE BOLT.
01/01/1975 by LOCENG (GOOD)
RECOVERY NOTE BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1975 RECOVERED IN GOOD CONDITION.
10/10/1988 by NJGS (GOOD)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW DESCRIPTION AS FOLLOWS. 5.92 KM (3.70 MI) NORTHWEST ALONG STATE ROUTE 29 FROM THE JUNCTION WITH BRIDGE STREET IN STOCKTON, 0.64 KM (0.40 MI) NORTHWEST OF THE ENTRANCE ROAD TO BULLS ISLAND STATE PARK AT RAVEN ROCK, ON TOP OF THE SOUTHEAST END OF THE HEADWALL OF AN UNUSED ARCHED CULVERT, 0.24 M (0.8 FT) NORTHWEST OF THE SOUTHEAST END OF THE HEADWALL, 0.6 M (2.0 FT) BELOW LEVEL OF GRADE PATH, BM IS CHISELED IN THE HEADWALL 0.12 M (0.4 FT) SOUTHWEST OF THE BOLT. SAID CULVERT IS ALSO SOUTH OF ROUTE 29 CULVERT 1008 166 MILE POST 26.11. HEADWALL IS SPALLING.

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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