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Details for Benchmark: AB3870

N 41° 21.388 W 074° 40.901 (NAD 83)

Altitude: 465.26

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

Location:
In ORANGE county, NY View Original Datasheet
Designation:
DIANNE
Marker Type:
survey disk
Setting:
abutments and piers of large bridges
Stability:
Probably hold position/elevation well.

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Found while on a major Road Trip with Binrat, drove through NY, PA, NJ, CT, MA, NH and VT.

Found while on a major Road Trip with SigsPig, drove through NY, PA, NJ, CT, MA, NH and VT.

Binrat

Recovered in good condition - heavy traffic area!

Found with Flyer1957. See his picture.

Middle of the day and traffic all over.

[Photos:]
photoRight on the side of the road

Found easily - just be careful of the traffic.

Easy find, but tough on pedestrians. Parked at the Port Jervis Welcome Center.

[Photos:]
photoAB3870 Deer Park Orange NY Close Up
photoAB3870 Deer Park Orange NY View Northwest

Easy to spot!

you can see this one as you drive on by

Well marked with orange and easy to find.

Passed by this one while going from "Where Are You From Heading West" to "Where Are You From Heading East".

Easy find, but the intersection is not very pedestrian-friendly.

[Photos:]
photoCloseup of station DIANNE, outskirts of Port Jervis, NY
photoArea around station DIANNE, outskirts of Port Jervis, NY
Road in distance leads to business district; interstate entrance is to left.

#3 of 15 for the day. Except for the traffic, it is an easy find.

Mark #10 Easy to find in a busy location. Picture looks upstream.

[Photos:]
photoBeautiful Fall Day

Busy intersection at TriState entrance to Port Jervis. The mark is embedded in the bridge platform in the lower left of the area photo. . . . . patrick & shirley

[Photos:]
photoDiane area photo at intersection
Mark is in lower left of photo, in the bridge platform.
photoDiane marker itself
Recovered as described in good condition.

Took the family to visit Grandma in nearby NW Jersey for the Labor Day weekend and just had to log BM Diane on our trip from Albany, New York.

[Photos:]
photoDiane
The benchmark close-up

Documented History (by the NGS)

01/01/1995 by NYDT (MONUMENTED)
DESCRIBED BY NY DEPT OF TRANSP 1995 (KDS) THE STATION IS LOCATED ON THE EAST SIDE OF PORT JERVIS, NEW YORK, AT THE JUNCTION OF US HIGHWAY 6 AND HIGHWAY 23 JUST WEST OF EXIT 1 OF INTERSTATE HIGHWAY 84. TO REACH STATION FROM THE JUNCTION OF HIGHWAY 6 AND THE I-84 WEST BOUND EXIT RAMP, GO WEST ON HIGHWAY 6 FOR 0.2 KM (0.1 MI) TO THE JUNCTION OF HIGHWAY 23 AND THE STATION ON THE LEFT AT THE SOUTHEAST CORNER OF THE CONCRETE BRIDGE. THE STATION IS A BRONZE SURVEY DISK SET IN A DRILL HOLE IN THE CONCRETE DECK, ABOVE THE ABUTMENT, BEHIND THE GUIDERAIL, AND LEVEL WITH THE ROAD.
06/07/1995 by NJGS (GOOD)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1995 (EDB) THE STATION IS LOCATED IN DEER PARK TOWNSHIP ON THE SOUTH SIDE OF U.S. HIGHWAY 6, WEST OF THE CITY OF PORT JERVIS AT THE INTERSECTION OF U.S. HIGHWAY 6 AND NEW JERSEY ROUTE 23 AND WEST OF INTERCHANGE 1 OF INTERSTATE HIGHWAY 84. TO REACH THE STATION, PROCEED TO THE SOUTHEAST CORNER OF THE CONCRETE BRIDGE THAT IS THE EAST LEG OF THE THREE WAY INTERSECTION OF U.S. HIGHWAY 6 AND NEW JERSEY ROUTE 23 TO THE STATION ON THE RIGHT, SET FLUSH IN A DRILL HOLE IN THE CONCRETE DECK, ABOVE THE ABUTMENT AND BEHIND THE GUIDE RAIL.
12/04/1996 by NJGS (GOOD)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1996 (MWC) RECOVERED AS DESCRIBED.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in July 1997.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in September 1996.
  • 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.
  • 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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