Geocaching - The Official Global GPS Cache Hunt Site

You are not logged in. Log in.

Geocaching > Benchmark Hunting > Benchmark Details

Details for Benchmark: QH0630

Start a New Search


Learn More About Waypoint Downloads

N 45° 00.804 W 071° 30.329 (NAD 83)

Altitude: 1102.92

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

Location:
In ESSEX county, VT View Original Datasheet
Designation:
BOUNDARY MON 519 A CD US
Marker Type:
boundary marker disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

Reference Points

Nearest

Navigation

Must Read!

Benchmarks may be on private property or in dangerous locations. Obey local laws. By using the services on Geocaching.com you agree to this disclaimer.

Found it 10/5/2006 Papa-Bear-NYC found QH0630 (NGS Benchmark)   Visit Log
Found in good condition.

Over the Columbus weekend I headed up to northern New Hampshire for some hiking, benchmarking and a bit of sight seeing. All the recovered marks (and all but one of the Not Founds) were boundary markers of one sort or another. Some were state boundary markers, some were US-Canada boundary markers and some were IBC triangulation stations (used when the US-Canada border was surveyed in 1915-1916).

Here's a trip report: (visit link)
And here's a set of photo albums: (visit link)

This particular monument was originally a post like the others but was repeatedly damaged and repaired, and finally was cut off and replaced by a disk in 1937. It has been sitting here nicely ever since.

Logged with the NGS as "Recovered in good condition" on 10/12/2006.

Photos:
photoQH0630 "BOUNDARY MON 519 A CD US"
photoQH0630 "BOUNDARY MON 519 A CD US"
Closeup

Documented History (by the NGS)

1/1/1906 by IBC (MONUMENTED)
DESCRIBED BY INTERNATIONAL BOUNDARY COMMISSION 1906 STATION MARK--AN INTERMEDIATE POST OF GRANITE OR CONCRETE ABOUT 16-1/2 INCHES HIGH SET IN A CONCRETE BASE 3X3X3 FEET DEEP.
1/1/1906 by IBC (GOOD)
RECOVERY NOTE BY INTERNATIONAL BOUNDARY COMMISSION 1906 RECOVERED IN GOOD CONDITION.
1/1/1929 by IBC (POOR)
RECOVERY NOTE BY INTERNATIONAL BOUNDARY COMMISSION 1929 (JH) NEARLY BURIED WITH FILL AT LINE HOUSE
1/1/1937 by IBC (POOR)
RECOVERY NOTE BY INTERNATIONAL BOUNDARY COMMISSION 1937 (JGH) A STANDARD LINE DISK WAS SET IN BASE TO REPLACE POST IN 1937.
8/11/1993 by VTAT (GOOD)
RECOVERY NOTE BY VERMONT AGENCY OF TRANSPORTATION 1993 THE STATION IS LOCATED AT THE INTERSECTION OF VT ROUTE 253 AND THE U.S. CANADIAN BORDER (EAST HEREFORD, QUEBEC/BEECHER FALLS, VERMONT). STATION IS LOCATED IN A LAWN 12.5 M (41.0 FT) EAST OF THE CENTERLINE OF ROUTE 253, 9.3 M (30.5 FT) SOUTH OF THE CENTERLINE OF A GRAVEL DRIVE, 16.4 M (53.8 FT) SOUTH OF THE SOUTHEAST CORNER OF A ONE STORY BRICK HOUSE, 23.2 M (76.1 FT) SOUTHWEST OF POLE NUMBER K2K2Z, 20.2 M (66.3 FT) WEST OF U.S./CANADA BOUNDARY MARKER 518.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in May 1998.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in August 1994.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • 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.

Geocaching, a Groundspeak Project.

Copyright © 2000-2010 Groundspeak, Inc. All Rights Reserved.
About Groundspeak | Contact Us
Designated trademarks and brands are the property of their respective owners.
Use of this Web site constitutes acceptance of the Groundspeak Terms of Use.
Read our Geocaching Logo Usage Guidelines.
Hotels | Altrec Gear | GPS Reviews