Skip to Content

Details for Benchmark: GP0258

N 36° 42.600 W 111° 46.850 (NAD 83)

Altitude: 4364.65

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

Location:
In COCONINO county, AZ View Original Datasheet
Designation:
4373.55
Marker Type:
survey disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

Must Read!

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.

N 36° 42.615 W 111° 46.868

Survey Disk 4373.55 was recovered as described, in good condition. Additionally, this mark is located at Milepost 549.87 of U.S. Highway 89A.

[Photos:]
photoGP0258 20060509 G (Coconino Co. AZ)
Survey Disk 4373.55 w/GPSr.
photoGP0258 20060509 C (Coconino Co. AZ)
Survey Disk 4373.55.
photoGP0258 20060509 B (Coconino Co. AZ)
Survey Disk 4373.55 from Eye Level.
photoGP0258 20060509 A1 E (Coconino Co. AZ)
East at Survey Disk 4373.55.
photoGP0258 20060509 A2 N (Coconino Co. AZ)
North at Survey Disk 4373.55.

Recovered in good condition. Written description is adequate.

[Photos:]
photoGP0258 near Marble Canyon, AZ

Documented History (by the NGS)

01/01/1934 by AZHD (MONUMENTED)
DESCRIBED BY ARIZONA HIGHWAY DEPARTMENT (NOW AZDT) 1934 11.5 MI SW FROM MARBLE CANYON. 11.5 MILES SOUTHWEST ALONG U.S. HIGHWAY 89 FROM THE POST OFFICE AT MARBLE CANYON, COCONINO COUNTY, AT A DOUBLE 12- BY 12-FOOT CONCRETE-BOX CULVERT, AND IN THE CENTER OF THE TOP OF THE NORTH HEADWALL. AN ARIZONA STATE HIGHWAY DEPARTMENT STANDARD DISK, STAMPED 4373.55 637+54.3 1934.

Control Text

  • 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. * This is a POSTED BENCH MARK height. Code A indicates a distribution rate of 0.0 thru 1.0 mm/km.
  • 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.

Advertising with Us

Return to the Top of the Page