OC0822: K 9 (USC&GS/NGS, Bow, NH)
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NH2beers
N 43° 10.386 W 071° 31.627
19T E 294593 N 4783137
A USC&GS/NGS standard bench mark disk located in Bow, NH.
The NGS PID is OC0822.
The NHDOT ID# is 051-0310.
Waymark Code: WMA1QH
Location: New Hampshire, United States
Date Posted: 11/01/2010
Views: 5
This station is a U.S. Coast & Geodetic Survey disk, stamped -K 9 1933-, and set in the top of a concrete wing wall of a small culvert.
It has been reported as suitable for satellite observations July 5, 2004.
The NGS datasheet uses railroad measurements predominantly in their description, whereas the NHDOT datasheet has more road access details:
THE STATION IS LOCATED IN BOW. TO REACH THE STATION FROM THE JUNCTION OF STATE ROUTE 3A AND HALL STREET IN CONCORD, GO NORTHEAST FOR 100 FT ON HALL STREET TO THE STATION ON THE LEFT. THE STATION IS A STANDARD USCGS DISK STAMPED -K 9 1933-, SET IN THE TOP OF THE EAST END OF THE NORTHEAST CONCRETE WING WALL OF A SMALL CULVERT, LOCATED 318 FT NORTH ALONG THE BOSTON AND MAINE RAILROAD FROM HALL STREET,31.5 FT NORTHEAST FROM A CONCRETE MONUMENT MARKED 71/12, 18.5 FT EAST FROM THE CENTER OF THE TRACK, 11.0 FT WEST FROM THE WEST EDGE OF PAVEMENT, 11.0 FT NORTH FROM THE CENTER OF A 3.0 FT DIAMETER CONCRETE PIPE.
Both datasheets are adequate in their descriptions, however, for the NGS datasheet: there are no longer any signals present, and the B-71 milestone has been changed to 43.
There is a yellow-painted steel railing around the culvert where the station is, the mark is right under the railing, making for an easy find.
Two caveats here: The railroad, though used infrequently, is still active. Also, the parking area next to the culvert is a depot for a grain and feed company and could be very busy, especially on weekdays. Use your best judgment, be safe.
Condition: Mark found in good condition
Designation: K 9 1933
Benchmark Agency: U.S. Coast & Geodetic Survey
Monumentation type: BENCH MARK (or B.M.) Disk
County: Merrimack
USGS 7.5' Topographic Quadrangle Name (optional): Concord
Find type: Coordinates and/or to-reach information from an online local database were used
Web address of this benchmark's datasheet (optional): [Web Link]
NGS PID: OC0822
Local database's URL (optional): [Web Link]
Benchmark Agency (if other): Not listed
Monumentation type (if other): Not listed
Special category (optional): Not listed
Special Category (if other): Not listed
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