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Details for Benchmark: KV1290

N 40° 46.967 W 074° 49.900 (NAD 83)

Altitude: 941.46

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

Location:
In MORRIS county, NJ View Original Datasheet
Designation:
M 25
Marker Type:
bench mark 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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Found it.® With the help of a very friendly lady.

N 40° 46.966 W 074° 49.911

So, we parked alongside Zellers Road, in Washington Township, Morris. We even found pole BT-366! We're puttering around in the weeds and poison ivy. A sweet lady comes walking down the road. "Are you looking for the marker? I saw you pacing off distances." "Yes." "We put a rock next to it to protect if from the township mowers." Pokes around with a stick. "Here it is. What is it good for?" We explained benchmarks to her, and thanked her profusely for her help. We had been about to give up on the search!
Found, with the help of a very sweet lady who lives up the street.

[Photos:]
photoKV1290 Washington Morris Close Up
photoKV1290 Washington Morris NJ View downward
photoKV1290 Washington Morris NJ View Northeast
photoKV1290 with GPS and coordinates

Documented History (by the NGS)

01/01/1942 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1942 1.8 MI N FROM MIDDLE VALLEY. 1.8 MILES NORTH ALONG A DIRT ROAD FROM THE CENTRAL RAILROAD OF NEW JERSEY CROSSING AT MIDDLE VALLEY, MORRIS COUNTY, 450 FEET SOUTHEAST OF A WHITE HOUSE, 150 FEET NORTH OF THE NORTHEAST HEAD WALL OF A CULVERT, 56.5 FEET NORTH ACROSS THE ROAD FROM POLE BT-366, 21 FEET NORTHEAST OF THE CENTERLINE OF THE ROAD, AND ABOUT LEVEL WITH THE ROAD.
01/01/1973 by NGS (MARK NOT FOUND)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1973 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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