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Details for Benchmark: GQ0284

N 36° 54.281 W 112° 21.709 (NAD 83)

Altitude: 5272

Coordinates may not be exact. Altitude is SCALED and location is ADJUSTED. (more info)

Location:
In COCONINO county, AZ View Original Datasheet
Designation:
RYAN
Marker Type:
triangulation station disk
Setting:
set into the top of a round concrete monument
Stability:

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Triangulation Station RYAN was recovered in good condition. It wa found along the old road alignment.

[Photos:]
photoGQ0284 20060509 G (Coconino Co. AZ)
Triangulation Station RYAN w/GPSr.
photoGQ0284 20060509 C (Coconino Co. AZ)
Triangulation Station RYAN.
photoGQ0284 20060509 B (Coconino Co. AZ)
Triangulation Station RYAN from Eye Level.
photoGQ0284 20060509 A1 N (Coconino Co. AZ)
North at Triangulation Station RYAN.
photoGQ0284 20060509 A2 E (Coconino Co. AZ)
East at Triangulation Station RYAN.

Found station as described and RM 1, but we could not find RM 2 even with the metal detector. The station has 2 orange witness posts (like goal posts).

The Azimuth mark recovered as described with the exception of the small rock cairn that is now next to the mark.

[Photos:]
photoStation Ryan South of Fredonia, Az Old Hwy 89
photoRyan RM 1
photoRyan Azimuth
photoRyan AZI looking West towards Ryan Station
photoRyan looking South at Hemi between goal posts
photoRyan looking towards the 'Grand Staircase'
photoRM1 looking at Station Ryan

Documented History (by the NGS)

01/01/1938 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1938 (FGJ) LOCATED ABOUT 9 MILES AIRLINE, 9.9 MILES BY ROAD SOUTHEAST OF FREDONIA, ARIZONA. ABOUT 8 MILES SOUTH OF THE UTAH STATE LINE ON LOW, FLAT, SAGE COVERED RIDGE 19.2 METERS NORTH OF THE HIGHWAY U.S. 89. SURFACE AND UNDERGROUND MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE. REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN BOULDERS. AZIMUTH MARK IS A STANDARD BRONZE DISK SET IN BEDROCK. REACHED FROM FREDONIA, ARIZONA, WHERE THE HIGHWAY U.S. 89 TURNS SHARP LEFT (EAST) AT THE SOUTH EDGE OF TOWN, GO FOR 9.4 MILES SOUTHEAST ON 89 TO WHERE THE TELEPHONE CROSSES THE HIGHWAY. THENCE CONTINUE ON FOR 0.5 MILE TO WHERE THE HIGHWAY MAKES A BEND TO THE SOUTH. HERE LEAVE THE HIGHWAY AND DRIVE NORTH ACROSS THE SAGE BRUSH FOR 60 FEET TO THE STATION. THE AZIMUTH MARK IS 0.75 MILE FURTHER SOUTH ON THE RIGHT HAND SIDE OF THE HIGHWAY, ABOUT 40 FEET WEST OF THE CENTER LINE OF THE HIGHWAY.
01/01/1952 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1952 (GES) STATION WAS RECOVERED, AND ALL MARKS WERE FOUND IN GOOD CONDITION. THE HIGHWAY HAS CHANGED SINCE 1938. TO REACH THE STATION FROM FREDONA, FOLLOW THE NEW U.S. HIGHWAY 89 TOWARD JACOB LAKE FOR 9.1 MI., THEN PACK ACROSS COUNTRY FOR ABOUT 1/2 MI. TO THE N AND TO THE STATION.
01/01/1953 by FAS (GOOD)
RECOVERY NOTE BY FAIRCHILD AERIAL SURVEYS 1953 (GCS) RECOVERED THE STATION MARK AND REFERENCE MARKS 1 AND 2 IN GOOD CONDITION. THE PUBLISHED DESCRIPTION IS ADEQUATE. HOWEVER, HIGHWAY 89 REFERRED TO IN THE DESCRIPTION HAS BEEN REALIGNED AND RESURFACED SINCE 1938. MILEAGES, THOUGH, WILL STILL HOLD WITHIN 0.1 MI.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in November 1997.
  • 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.

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