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Details for Benchmark: KU3879

N 40° 52.501 W 073° 56.879 (NAD 83)

Altitude: 322

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

Location:
In BERGEN county, NJ View Original Datasheet
Designation:
HAN
Marker Type:
triangulation station disk
Setting:
in rock outcrop
Stability:

Reference Points

Must Read!

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I spent a beautiful Fall Sunday on the Palisades with Harry Dolphin and Andy Bear. We went after 3 marks: HAN, which they had found before but which was new for me, LINDY, which we had searched separately for but not found previously, and HIGH POINT, which was new for all of us.

HAN is located on the cliff behind Saint Peters College in Englewood NJ. You park in the last lot and there is an unlocked gate in the fence along the cliff. Since Harry and Andy Bear had previously found this, there was no problem finding the right place. But they were nice enough to let me find it by myself amoung the vines growing on the rock.

We then searched for the 2 RMs. We found RM 2 using a tape, compass and trowel. Harry did the heavy digging. It was found and interestingly it was a tidal bench mark disk, not a reference disk. The datasheet mentioned a bench mark disk, not the peculiar variety used on tidal marks with the circle bisected by the line. The disk was unstamped (as per description) and the bench line pointed (more or less) to the station disk.

We had no such luck finding RM 1, but we were happy to have uncovered at least one of the RMs since it's probably the first time it has seen the light of day since 1930.

[Photos:]
photoKU3879 "HAN", Englewood Cliffs, NJ
View along the cliff looking north. The Englewood boat basin is below on the Hudson at the base of the cliff. As indicated in the photo, the disk is 3' 0" from the edge of the cliff. Be careful if you go!
photoKU3879 "HAN", Englewood Cliffs, NJ
The disk hidden in the vines on the cliff top.
photoKU3879 "HAN", Englewood Cliffs, NJ
photoKU3879 "HAN" RM2, Englewood Cliffs, NJ
Looking back towards the college from the station disk.
photoKU3879 "HAN" RM2, Englewood Cliffs, NJ
The rock after the dirt and vegetation had been removed. The disk is partly obscured by shadows.
photoKU3879 "HAN" RM2, Englewood Cliffs, NJ
Reference mark #2. As you can see, it's a recycled tidal bench mark disk, unstamped (but slightly banged up).

Benchmarking with Andy Bear and Papa-Bear-NYC, we located RM2. Interesting bench mark disk to use as a reference mark. We had to do quite a bit of digging for this one.

[Photos:]
photoKU3879 RM2 Englewood Cliffs Bergen NJ Close Up
photoKU3879 RM2 Englewood Cliffs Bergen NJ View North

Found it.® Second attempt. Caution should be used. There is a several hundred foot drop off the Palisades at this point.

[Photos:]
photoKU3879

Directions: Heading north on Hudson Terrace, make a right under the Palisades Parkway at Allison Park, left onto Allison Park Road, into the grounds of Saint Peter's College at Englewood Cliffs. Circle to the north parking lot. Exit parking lot through gate. Follow GPS coordinates. Disk was hiding under low growing vine. This was our second attempt to find this one.
Reference marks searched for, briefly, but not found.

[Photos:]
photoKU3879
photoKU3879
View across the Hudson (to the east) of Fort Tryon Park and the Henry Hudson Bridge.

Documented History (by the NGS)

01/01/1930 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1930 (CAE) ON THE BROW OF THE PALISADES ABOUT 1/4 MILE S OF THE ENTRANCE TO THE PALISADES INTERSTATE PARK TOURIST CAMP, AND THE ROAD LEADING DOWN TO THE ENGLEWOOD FERRY LANDING, ON THE SAINT JOSEPH ORPHANAGE HOME FOR BOYS, ABOUT 70 METERS S OF A WOODEN FENCE ON THE N SIDE OF THE GROUNDS, ABOUT 50 METERS S OF A NARROW SHOULDER OF THE CLIFF WITH A SMALL SPOT OF CONCRETE ON ITS TOP. 24.5 METERS SE OF A PATH LEADING ALONG THE CLIFF, AND 0.40 METER S OF A HOLE DRILLED IN THE ROCK. STATION AND REFERENCE MARK NO. 1 ARE STANDARD BRONZE DISKS WEDGED IN A DRILL HOLE IN OUTCROPPING BEDROCK. REFERENCE MARK NO.2 IS A U.S.C. AND G.S. BENCH MARK, CEMENTED IN A DRILL HOLE WITH ITS HORIZONTAL LINE POINTING TOWARD THE STATION. HEIGHT OF SIGNAL ABOVE STATION MARK - 2.5 METERS.
02/07/1992 by NJGS (MARK NOT FOUND)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1992 (ECB) THE STATION WAS SEARCH FOR AND NOT RECOVERED AFTER A HALF HOUR SEARCH BY A TWO MAN PARTY. THE AREA HAS BEEN IMPROVED OVER THE YEARS AND NO ORIGINAL TIES EXIST TO LOCATE THE STATION WITH ANY CERTAINTY.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in September 1999.
  • The orthometric height was scaled from a topographic map.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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