MW0835 - USC&GS 'OVERPASS' Triangulation Station - Modoc County, CA
N 41° 42.303 W 121° 16.884
10T E 642988 N 4618456
An NGS triangulation station as part of the OVERPASS series just west of Highway 139 and SE of an overpass bridge.
Waymark Code: WMVJ3K
Location: California, United States
Date Posted: 04/23/2017
Views: 1
I recovered the U.S. Coast & Geodetic Survey triangulation station from 1948 in good condition. The station is located west of Highway 139 and on top of a small hill and just south of an overpass bridge. An orange carsonite witness post and a white reflector witness post aid in station recovery. Reference marks 1 and 2 were located although RM 1 were recovered in addition to he Azimuth Mark. This station mark is also located on a topography map as 'OVERPASS'.
The posted NGS coordinates and datasheet description are acceptable for station recovery, although the community of Tionesta no longer exists and the blazed fence line post is gone.
NGS datasheet info for station mark:
01/01/1948 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (WRH) THE STATION IS LOCATED ALONG STATE HIGHWAY 139, ABOUT 20 MILES, AIRLINE, 21.5 MILES BY ROAD SOUTH SOUTHEAST OF THE TOWN OF TULELAKE, 5-1/2 MILES NORTHEAST OF THE LOGGING TOWN OF TIONESTA, ON THE WEST SIDE OF THE HIGHWAY ABOUT 150 FEET SOUTH FROM THE SOUTH END OF THE HIGHWAY OVERPASS ON THE GREAT NORTHERN RAILROAD. THE STATION MARK, STAMPED OVERPASS 1948, IS A STANDARD DISK CEMENTED IN A DRILL HOLE IN OUTCROPPING BEDROCK THAT PROJECTS 6 INCHES. IT IS 59.7 FEET WEST OF THE CENTER OF STATE HIGHWAY 139, 9.5 FEET SOUTHWEST OF A TRIANGULAR BLAZED FENCE POLE AND 7.5 FEET WEST OF THE FENCELINE.
THE STATION IS REACHED AS FOLLOWS--FROM THE TRAFFIC CAUTION LIGHT ON STATE HIGHWAY 139 AT THE TOWN OF TULELAKE, GO SOUTH SOUTHEAST ON STATE HIGHWAY 139 FOR 21.5 MILES TO THE SOUTH END OF THE HIGHWAY OVERPASS AND THE STATION ON THE RIGHT.
Condition: Mark found in good condition
Designation: OVERPASS
Benchmark Agency: U.S. Coast & Geodetic Survey
Monumentation type: TRIANGULATION STATION Disk
County: Modoc County
USGS 7.5' Topographic Quadrangle Name (optional): Perez (1993)
Find type: Coordinates and/or to-reach information from the NGS database (or Geocaching's copy of it) were used
Web address of this benchmark's datasheet (optional): [Web Link]
NGS PID: MW0835
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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Visit Instructions:
- A closeup photo of the mark taken by you is required.
- A 'distant' photo including the mark in the view is highly recommended. Include the compass direction you faced when you took the picture.
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