Details for Benchmark: TP1194
N 48° 40.174 W 119° 55.948 (NAD 83)
Coordinates may not be exact. Altitude is SCALED and location is ADJUSTED. (more info)
- In OKANOGAN county, WA View Original Datasheet
- Marker Type:
- drill hole
- in rock outcrop
- Most reliable and expected to hold position/elevation well.
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.
Documented History (by the NGS)
|1/1/1900 by IBC (MONUMENTED)
|DESCRIBED BY INTERNATIONAL BOUNDARY COMMISSION 1900
STATION MARK--A DRILL HOLE 6 INCHES DEEP IN SOLID ROCK WITH AN 8-FOOT CAIRN BUILT OVER IT.
|1/1/1925 by CGS (GOOD)
|RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1925
ON THE HIGHER AND MORE SOUTHERN SUMMIT OF TIFFANY MOUNTAIN, A ROUND, BARE, DOUBLE - TOPPED MOUNTAIN IN THE MAIN RANGE BETWEEN THE METHOW AND OKANOGAN RIVERS. THE STATION IS ABOUT 22 MILES NORTHEAST OF WINTHROP, EASHINGTON, ABOUT 20 MILES SOUTHWEST OF LOOMIS, WASHINGTON, AND ABOUT 12 MILES NORTHWEST OF CONCONULLY, WASHINGTON. IT MAY BE CONVENIENTLY APPROACHED FROM ANY OF THESE PLACES.
STATION MARK--A DRILL HOLE 6 INCHES DEEP IN SOLID ROCK WITH AN 8 - FOOT CAIRN BUILT OVER IT. IN 1925 THE US COAST AND GEODETIC SURVEY ESTABLISHED A FIRST ORDER TRIANGULATION STATION 2.890 METERS FROM THE ORIGINAL STATION IN BEARING 88 DEGREES 03 MINUTES. THE ISC AND GS STATION MARK IS A STANDARD BRONZE - DISK STATION MARK WEDGED IN A DRILL HOLE IN OUTCROPPING BEDROCK. A STANDARD USC AND GS BRONZE - DISK REFERENCE MARK, WITH THE ARROW POINTING TOWARD THE STATION, IS WEDGED IN A DRILL HOLE IN A BOULDER 9.321 METERS FROM THE USC AND GS STATION IN BEARING 311 DEGREES 14 MINUTES 42 SECONDS. A LIKE MARK SET IN THE SAME MANNER IS 8.018 METERS FROM THE USC AND GS STATION IN BEARING 24 DEGREES 43 MINUTES 34 SECONDS.
- The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in December 1991.
- The orthometric height was scaled from a topographic map.
- The Laplace correction was computed from DEFLEC99 derived deflections.
- The geoid height was determined by GEOID99.