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Details for Benchmark: GP0061

N 36° 19.267 W 110° 56.333 (NAD 83)

Altitude: 5512.75

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

Location:
In COCONINO county, AZ View Original Datasheet
Designation:
X 49
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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Found a disk at the calls but it is not stamped. Permission to take photos was denied.

Found as described when monumented. Our coordinates are as follows..

36 19.297 - 110 56.357

[Photos:]
photoX 49 at the Red Lake Trading Company
photoX 49 Right by the step along hwy 160 - AZ
photoRed Lake Trading Co. - X 49s home

Documented History (by the NGS)

1/1/1934 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1934 IN TONALEA. AT TONALEA, COCONINO COUNTY, AT THE POST OFFICE AND STORE BUILDING OF THE RED LAKE TRADING CO., 5 FEET SOUTH OF THE CENTER OF THE ENTRANCE, IN THE TOP OF THE FIRST STEP TO THE MAIN ENTRANCE, AND 8 INCHES WEST OF THE EDGE OF THE STEP. A STANDARD DISK, STAMPED X 49 1934.
1/1/1965 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1965 RECOVERED IN GOOD CONDITION.
1/1/1983 by NGS (MARK NOT FOUND)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1983 MARK NOT FOUND.

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 June 1991.
  • 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.

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