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Details for Benchmark: LY0800

N 41° 10.717 W 074° 47.600 (NAD 83)

Altitude: 904.99

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

Location:
In SUSSEX county, NJ View Original Datasheet
Designation:
RV 2448
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Found in good condition.

[Photos:]
photoLY0800 Rivet
Closeup of Rivet with GPS

Found it.®

Benchmarking with Andy Bear and Borress. Easy find.

[Photos:]
photoLY0800 RV2448 Sussex County NJ
photoLY0800 Sussex County NJ view NW
N 41° 10.709 W 074° 47.622

This was the most fiercely guarded benchmark I've yet encountered. I never imagined searching for a little rivet on a bridge in a public right-of-way would have caused us any trouble! The bridge was easily accessible, we determined as we drove by on Route 206. We parked nearby and walked to the bridge to scout it out. We could see green paint on the southeast corner of the headwall, but the area needed to be cleared before we could take photographs. Aaron remained near the bridge while Rich and I returned to the vehicle to retrieve our tools. And this is where things got ugly. As we walked back to the bridge, I saw and heard a confrontation taking place between Aaron and a visibly angry little man.

When we arrived, the man was gesturing wildly and screaming that we'd better “get your [expletive] off my [expletive] bridge,” “don't even think about stealing my [expletive] water,” etc. He seemed convinced that we were “city folk,” against whom he apparently holds a grudge.

“Oh, so you say you're [i]not[/i] from the City. Where you from, then? Oh, I bet I know. [i]South[/i] Jersey. Or Central Jersey!!! [Expletive] city folk!”

“We're Americans! That's all you need to know.”

“Well, then that's one thing you got going for you. I been overrun with these [expletive] Hindus and blacks!”

Nothing we said would calm him, even when we asked “Do you own this bridge?” and he responded “No!” The cursing continued as Rich defied him and stepped over the guardrail.

“You get back on this side of that [expletive] guardrail right now!” he demanded. Rich ignored him.

“I'll call the cops!” the man shouted.

“Go ahead.”

“I'm gonna push you right in the [expletive] water!”

“Go ahead!”

I looked on, astonished and feeling within seconds of tossing this guy over the guardrail myself. At long last, the man started to lose steam and while he was still acting guarded and macho, he did eventually listen to our explanation of the purpose of the mark and read the datasheet while we photographed the mark. For the time being, we decided to forget about the mark on the opposite headwall of the bridge and just get out while the getting out was good. The man's last grumble to us was something like “well, at least you're not [expletive] Hindus.”

[i]A report on the status of this mark was submitted to NGS, along with the following recovery note:[/i]

Mark recovered in good condition. State Highway No. S 31 is now US Route 206.

Zhanna

[Photos:]
photoLY0080, Sussex County, NJ
photoEye-level view of the mark on the bridge headwall.
photoLooking northwest along Route 206.
N 41° 10.709 W 074° 47.623

[b]Recovered in good condition.[/b]

This second order vertical control station is set in the top of the southwest headwall of a concrete bridge along U.S. Rt. 206 (formerly State Highway S31) crossing a small stream feeding Kittatinny Lake. The historical description leads reliably to the station. The station mark is a standard monel rivet and appears to be in good condition. At the station a Garmin GPSmap76 receiver with remote active antenna was used to record WAAS-corrected coordinates which were 116 feet from the scaled coordinates listed on the NGS datasheet. ~Rich in NEPA~

[Photos:]
photoLY0800, RV 2448, Sussex County, NJ.
photoGPSr and the station mark.
photoEyelevel view of station mark and setting.
photoView, facing northwest along Rt. 206, mark indicated.

Documented History (by the NGS)

Unknown by NJGS (MONUMENTED)
1/1/1942 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 4 MI SE FROM LAYTON. 2.4 MILES SOUTHEAST ALONG A BLACK TOP ROAD FROM THE POST OFFICE AT LAYTON, THENCE 1.6 MILES SOUTH ALONG STATE HIGHWAY NO. S 31, AT A CONCRETE BRIDGE WHICH IS AT THE NORTHEAST END OF KITTATINNY LAKE. A STANDARD MONEL METAL RIVET, SET IN THE TOP OF THE SOUTHEAST END OF THE SOUTHWEST HEAD WALL, AND 23 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY.

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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