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Details for Benchmark: CL1199

N 32° 59.450 W 083° 44.017 (NAD 83)

Altitude: 423.82

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

Location:
In MONROE county, GA View Original Datasheet
Designation:
L 347
Marker Type:
metal rod
Setting:
stainless steel rod
Stability:
Probably hold position/elevation well.

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turning around in the drive and we spotted the witness post. a little poking and digging and there it was.

Documented History (by the NGS)

01/01/1979 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1979 12.35 MI NW FROM MACON. 12.35 MILES NORTHWEST ALONG U.S. HIGHWAY 23 FROM THE JUNCTION OF HIGHWAYS 23 AND 49 IN MACON TO THE MARK ON THE RIGHT, AT THE SOUTHEAST CORNER OF THE JUNCTION OF 23 AND POPES FERRY ROAD, BETWEEN POWER POLE AND GUY WIRE, 194 FEET EAST OF CENTERLINE OF HIGHWAY, 34 FEET SOUTH OF THE CENTER OF ROAD, 32 FEET WEST OF PRIVATE DRIVE TO THE G.M. ROSS RESIDENCE, 18 FEET SOUTH OF A CONCRETE PIPE CULVERT, 15 FEET WEST OF GUY WIEW, 2 FEET EAST OF POWER POLE NUMBER 18. THE MARK IS 1 FT W FROM L 347 THE MARK IS 3 FT ABOVE ROAD.
02/13/1992 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 (JRO) RECOVERED AS DESCRIBED.

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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