Details for Benchmark: FR0018
N 35° 38.983 W 112° 08.400 (NAD 83)
Coordinates may not be exact. Altitude is POSTED and location is SCALED. (more info)
- In COCONINO county, AZ View Original Datasheet
- K 262
- Marker Type:
- survey disk
- light structures
- Mark of questionable or unknown stability.
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||2oldfarts (the rockhounders) found FR0018
Recovered in good condition.
Note, the Exxon station is gone and a rock shop is there now. The mark is behind the shop and it is strongly recommended you get permission from the ladies running the rock shop before starting to look. They will show where the flagpole is located and the benchmark is on the west edge of the concrete at the base of the flagpole.
[Photos:]K 262 near the Valle airport in Coconino County.
Documented History (by the NGS)
|01/01/1945 by USE (MONUMENTED)
|DESCRIBED BY US ENGINEERS 1945
IN VALLE AIRPORT. AT VALLE AIRPORT, COCONINO COUNTY, AT THE MAIN ENTRANCE, AT A SEMI CIRCULAR DRIVE IN FRONT OF THE T.W.A. AIRLINE BUILDING, 47 FEET EAST OF THE CENTER LINE OF THE DRIVE, AND IN THE WEST SIDE OF THE CONCRETE BASE OF THE FLAGPOLE. A CORPS OF ENGINEERS, U.S. ARMY, STANDARD DISK, STAMPED K 262 1945.
|01/01/1976 by NGS (GOOD)
|RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976
THE STATION WAS RECOVERED IN GOOD CONDITION AS DESCRIBED BY THE USC AND GS IN LINE 101 IN QUAD. 351121 WITH THE FOLLOWING EXCEPTION NOTED-- THE STATION IS NOW ABOUT 25 FT. WEST OF THE WEST WALL OF AN EXXON SERVICE STATION.
- The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
- The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in 1992. No vertical observational check was made to the station. * This is a POSTED BENCH MARK height. Code NC indicates the bench mark was located on a no-check spur therefore a value was not computed.
- The geoid height was determined by GEOID99.
- The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
- The modeled gravity was interpolated from observed gravity values.