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Details for Benchmark: BS1561

N 31° 57.303 W 083° 46.818 (NAD 83)

Altitude: 328.3

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

Location:
In CRISP county, GA View Original Datasheet
Designation:
10E 31 GAGS 1935
Marker Type:
survey disk
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

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Documented History (by the NGS)

01/01/1935 by GAGS (MONUMENTED)
DESCRIBED BY GEORGIA GEODETIC SURVEY 1935 (JB) AT CORDELE, 5 PACES NORTH OF CENTER LINE OF GRADE CROSSING, 4.3 FEET EAST OF EAST RAIL OF SWITCH TRACK AND 4.2 FEET WEST OF WEST RAIL OF MAIN TRACK. STATION IS A STATE SURVEY STANDARD DISK SET IN 6-INCH STOVEPIPE FILLED WITH CONCRETE, PROJECTS 1 INCH AND IS 1907 FEET EAST OF CORDELE (SEE DESCRIPTION THEREOF) S 79 DEG 59 MIN E.
01/01/1971 by NGS (MARK NOT FOUND)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS) STATION SEARCHED FOR BUT NOT FOUND AND APPEARS DESTROYED BY RAILROAD RIGHT-OF-WAY IMPROVEMENTS. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN AT CORDELE.
01/01/1975 by NGS (MARK NOT FOUND)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1975 (CLN) STATION WAS SEARCHED FOR BUT NOT FOUND. THE ROAD HAS BEEN WIDENED AND THERE IS ABOUT 6 TRACKS AT THE RAILROAD CROSSING NOW. RAILROAD TRACK AND ROAD IMPROVEMENTS APPARENTLY DESTROYED THE MARK. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN 1/2 MILE SOUTH OF CORDELE ALONG TRACKS.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in September 1997.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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