Details for Benchmark: NZ1272
N 42° 22.759 W 123° 15.282 (NAD 83)
Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)
- In JOSEPHINE county, OR View Original Datasheet
- GRANTS PASS
- Marker Type:
- NGS Benchmark
- setting not listed - see description
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Documented History (by the NGS)
|01/01/1904 by USGS (MONUMENTED)
|DESCRIBED BY US GEOLOGICAL SURVEY 1904 (AIO)
ON HIGHEST POINT OF GRANTS PASS PEAK, ELEVATION 3836 FEET, SITUATED ABOUT 6 MILES SOUTHEAST OF GRANTS PASS. PROBABLY EASIEST REACHED BY TAKING ROAD FROM GRANTS PASS SOUTH ABOUT 6 MILES TO LUTHER DIVIDE, AND CLIMBING FROM THAT POINT TO EAST. MARKED BY USGS BRONZE DISK IN HIGHEST POINT. DRILL HOLES 1 INCH DEEP IN SOLID ROCK ARE 11.2 FEET TO SOUTHWEST AND 44.1 FEET TO NORTH.
- The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 1991.
- The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
- The Laplace correction was computed from DEFLEC99 derived deflections.
- The geoid height was determined by GEOID99.