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Details for Benchmark: GG0399

N 36° 20.483 W 095° 36.917 (NAD 83)

Altitude: 632.67

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

Location:
In ROGERS county, OK View Original Datasheet
Designation:
RV 41
Marker Type:
rivet
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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We found it too, but could not get a picture because the ballast rock was so loose on the steep grade. :( Glad to get off this without any bodily injury. LOVE these old RR rivet benchmarks

Found the rivet at center top of the culvert in great condition. Tore a big hole in my jeans on barbed wire at knee level. Better position: 36°20.487 95°36.936. About 0.33 mile walk. The numbers on the culvert are "1928".

[Photos:]
photoBenchmark gg0399 - The Rivet
photoBenchmark gg0399 - The Culvert 1928

Documented History (by the NGS)

Unknown by MPRR (MONUMENTED)
01/01/1939 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1939 2.2 MI N FROM CLAREMORE. ABOUT 2.2 MILES NORTH ALONG THE MISSOURI PACIFIC RAILROAD FROM THE STATION AT CLAREMORE, ROGERS COUNTY, ABOUT 24 POLES NORTH OF MILEPOST 611, AT A DOUBLE 5- BY 5-FOOT CONCRETE CULVERT, AND IN THE CENTER OF THE TOP OF THE WEST HEAD WALL. A STANDARD MONEL-METAL RIVET.
01/01/1960 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 RECOVERED IN GOOD CONDITION.

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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