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Details for Benchmark: QH0624

N 45° 00.793 W 071° 30.045 (NAD 83)

Altitude: 1099

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

Location:
In ESSEX county, VT View Original Datasheet
Designation:
LOT
Marker Type:
survey disk
Setting:
set into the top of a prefabricated concrete post imbedded in the ground
Stability:
Mark of questionable or unknown stability.

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I spent a productive 4 day weekend in Northern New Hampshire and Vermont in late September. From Friday noon till Monday noon. The weather on Friday and Monday was great, but Saturday and Sunday were rainy. But luckily we escaped the worst of the rain which came late in the day for both Saturday and Sunday.

The targets were all boundary monuments and related marks: Boundary Monuments, Reference Monuments and Triangulations stations used in the boundary survey done from 1914-1919. The Reference Monuments were not in the NGS database, so I include them as "exra credit" stations logged with the nearest NGS station.

I arrived Friday around noon after a drive from the Boston area and explored the lower part of Halls Stream Road, which starts in Beecher Falls (part of Canaan Vermont) and goes up along the east side of the stream (which forms the US / Canada boundary) into New Hampshire.

This station is just south of the Vermont / New Hampshire line and is in the back of the property of the last house in Vermont. I talked to the charming owner who was unaware of the existence of the mark. She just wanted reassurance that it was in Vermont and therefore on her land. She apparently didn't get along too well with her next door neighbor across the line in New Hampshire.

The station is on a slight knoll which rises in the back of the property, just before the land drops off at the stream bank. It took a while to find it with a metal detector since there were no reference marks and the area was covered with grass and ferns and the mark was under a few inches of duff. But find it I did, and (at that point) it became the easternmost Vermont station logged on GC.

[Photos:]
photoQH0624 "LOT", Beecher Falls Vermont
View looking towards Halls Stream showing the knoll in the back of the property where the mark was found.
photoQH0624 "LOT", Beecher Falls Vermont
My metal detector found the station under the ferns and and inch or two of dirt and roots.
photoQH0624 "LOT", Beecher Falls Vermont
The unstamped disk was set in the top of a concrete post, originally flush with the ground.
photoQH0624 "LOT", Beecher Falls Vermont
Closeup of station. "U.S.&C.B.SURVEY" stands for "United States and Canada Boundary Survey", which took place in 1914-1919.

Documented History (by the NGS)

01/01/1914 by IBC (MONUMENTED)
DESCRIBED BY INTERNATIONAL BOUNDARY COMMISSION 1914 (JEM) IN CANAAN TOWNSHIP, ON THE EAST SIDE OF HALLS STREAM, ON A SMALL KNOLL ABOUT 120 FEET FROM HALLS STREAM AND ABOUT 175 FEET SOUTH OF THE INTERNATIONAL BOUNDARY PRODUCED ACROSS THE STREAM. STATION MARK--A STANDARD BRONZE DISK SET FLUSH WITH THE SURFACE OF THE GROUND IN THE TOP OF A 3-FOOT CONCRETE POST. THE SUBSURFACE MARK IS A GIN BOTTLE BURIED 3-1/4 FEET BELOW THE SURFACE OF THE GROUND.
01/01/1980 by IBC (GOOD)
RECOVERY NOTE BY INTERNATIONAL BOUNDARY COMMISSION 1980 (DD) STATION WAS RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in May 1998.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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