Details for Benchmark: GG0391
N 36° 22.817 W 095° 39.767 (NAD 83)
Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)
- In ROGERS county, OK View Original Datasheet
- RV 35
- Marker Type:
- light structures
- Mark of questionable or unknown stability.
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.
||bearbrew found GG0391
Benchmarking with BasicPoke on a rainy day and located the benchmark as described. The coordinates were off but we were able to locate by the description.
This entry was edited by bearbrew on Thursday, 21 November 2013 at 17:08:27 UTC.
Documented History (by the NGS)
|Unknown by MPRR (MONUMENTED)
|01/01/1960 by NGS (GOOD)
|DESCRIBED BY NATIONAL GEODETIC SURVEY 1960
6 MI S FROM OOLAGAH. 6.0 MILES SOUTH ALONG THE MISSOURI PACIFIC RAILROAD FROM THE STATION AT OOLOGAH, ROGERS COUNTY, ABOUT 27-1/2 POLES NORTH OF MILEPOST 615, AT A 6- BY 8-FOOT CONCRETE CULVERT, AND IN THE CENTER OF THE TOP OF THE WEST HEAD WALL. A STANDARD MONEL-METAL RIVET.
- 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.