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Details for Benchmark: LC0403

N 40° 15.109 W 088° 38.681 (NAD 83)

Altitude: 731.52

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

Location:
In DE WITT county, IL View Original Datasheet
Designation:
FARMER 2
Marker Type:
triangulation station disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

Reference Points

Must Read!

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This one is still there and bears another picture since it has been a couple years.

[Photos:]
photoLC0403 Farmer 2

Found pretty easily.

[Photos:]
photoLC0403 close up
photoLC0403 showing area

Documented History (by the NGS)

01/01/1971 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1971 (LFS) THE STATION IS LOCATED AT THE NORTH EDGE OF FARMER CITY, ABOUT 150 FEET NORTHEAST OF THE INTERSECTION OF PLUM AND VAN BUREN STREETS, 43 FEET EAST OF THE CENTERLINE OF N PLUM STREET, 5 FEET SOUTHWEST OF A TELEPHONE POLE, 55 FEET SOUTHEAST OF RAILROAD LIGHT SIGNAL, 12 FEET SOUTH OF SOUTH RAIL OF SIDE TRACK, 20 FEET SOUTH OF SOUTH RAIL OF MAIN TRACK, 7 FEET NORTHEAST OF THE END OF RAILROAD SIDING, 6 FEET NORTH OF NORTH RAIL OF SIDE TRACK AND 1 FOOT NORTHEAST OF A METAL WITNESS POST. THE MONUMENT IS FLUSH AND THE DISK IS STAMPED FARMER 2 1971. TO REACH THE AZIMUTH MARK FROM THE STATION, GO NORTH ON PLUM ST. FOR ABOUT 200 FEET TO THE INTERSECTION OF U.S. HIGHWAY 150. TURN LEFT AND GO NORTHWEST ON THE HIGHWAY FOR 0.35 MILE TO THE AZIMUTH MARK ON THE RIGHT. REFERENCE MARK 2 IS 14 FEET NORTH OF THE NORTH CURB OF W VAN BUREN ST., 13 FEET WEST OF THE WEST CURB OF N PLUM ST., 6 FEET NORTHWEST OF A STREET SIGN POST AND 12 FEET SOUTH OF A FIRE HYDRANT. THE MONUMENT PROJECTS 4 INCHES AND THE DISK IS STAMPED FARMER NO 2 1934. REFERENCE MARK 3 IS A STANDARD DISK STAMPED FARMER 2 NO 3 1971 SET IN A DRILL HOLE IN THE SOUTHEAST CORNER OF THE CONCRETE BASE OF THE RAILROAD SIGNAL LIGHT, 4 FEET NORTH OF TJE NORTH RAIL OF THE MAIN TRACK AND 34 FEET EAST OF THE CENTERLINE OF N PLUM ST. THE AZIMUTH MARK IS 26 FEET NORTHEAST OF THE CENTERLINE OF THE HIGHWAY, 101 FEET NORTHEAST AND ACROSS THE HIGHWAY FROM THE NORTHEAST RAIL OF RAILROAD TRACKS, 300 FEET NORTHWEST OF CENTER OF THE JUNCTION OF HIGHWAY AND DRIVEWAY NORTH TO A 2 STORY BRICK HOUSE, 4 FEET SOUTHWEST OF A FENCE AND 1 FOOT SOUTHEAST OF A METAL WITNESS POST. THE MONUMENT PROJECTS 4 INCHES AND THE DISK IS STAMPED FARMER AZIMUTH 1934. HEIGHT OF LIGHT ABOVE STATION MARK 5 FEET. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--AT FARMER CITY
01/01/1971 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 AT FARMER CITY. LOCATED AT THE NORTH EDGE OF FARMER CITY, ABOUT 150 FEET NORTHEAST OF THE INTERSECTION OF N PLUM AND W VAN BUREN STREETS, 43 FEET EAST OF THE CENTERLINE OF N PLUM ST., 5 FEET SOUTHWEST OF A TELEPHONE POLE, 55 FEET SOUTHEAST OF A RAILROAD SIGNAL LIGHT, 12 FEET SOUTH OF THE SOUTH RAIL OF SIDE TRACK, 20 FEET SOUTH OF THE SOUTHRAIL OF MAIN TRACK, 7 FEET NORTHEAST OF THE END OF RAILROAD SIDING, 6 FEET NORTH OF THE NORTH RAIL OF SIDETRACK, 1 FOOT NORTHEAST OF A METAL WITNESS POST, SET IN THE TOP OF A ROUND CONCRETE POST FLUSH WITH THE GROUND.
01/01/1975 by LOCSUR (GOOD)
RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1975 (JDW) RECOVERED BY BARNS CLANCY AND ASSOC THE AZIMUTH MARK WAS FOUND IN GOOD CONDITION.
01/01/1976 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 (LHW) THE STATION WAS RECOVERED AS DESCRIBED IN 1971 EXCEPT A NEW RAILROAD SIGNAL WAS INSTALLED. THE BASE TO THE OLD SIGNAL IS STILL THERE. NO OBSERVATIONS OR MEASUREMENTS WERE TAKEN AT THIS TIME. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--AT FARMER CITY.
01/01/1976 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 RECOVERED IN GOOD CONDITION.
01/01/1986 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986 RECOVERED IN GOOD CONDITION. NEW DESCRIPTION FOLLOWS. IN FARMER CITY, AT THE INTERSECTION OF NORTH PLUM AND WEST VAN BUREN STREETS, 104.0 M (341.2 FT) SOUTH OF THE CENTERLINE OF U.S. HIGHWAY 150, 51.2 M (168.0 FT) NORTH OF THE CENTER OF VAN BUREN STREET, 13.2 M (43.3 FT) EAST OF THE CENTER OF PLUM STREET, AND 7.8 M (25.6 FT) SOUTH-SOUTHEAST OF THE NEAR RAIL OF THE MAIN TRACK OF THE CONRAIL RAILROAD. THE MARK IS 0.2 METERS N FROM A WITNESS POST THE MARK IS ABOVE LEVEL WITH PLUM STREET.
03/18/1991 by LOCSUR (GOOD)
RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1991 (SS) RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in October 1999. No horizontal observational check was made to the station.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • 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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