Details for Benchmark: RC2263
N 45° 21.041 W 121° 48.930 (NAD 83)
Coordinates may not be exact. Altitude is SCALED and location is ADJUSTED. (more info)
- In CLACKAMAS county, OR View Original Datasheet
- EAST ZIGZAG MOUNTAIN FP
- Marker Type:
- NGS Benchmark
- setting not listed - see description
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Documented History (by the NGS)
|01/01/1953 by CGS (MONUMENTED)
|DESCRIBED BY COAST AND GEODETIC SURVEY 1953
SEE STATION ZIGZAG
- The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 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.