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Details for Benchmark: LC1177

N 40° 29.167 W 089° 02.117 (NAD 83)

Altitude: 813.1

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

Location:
In MCLEAN county, IL View Original Datasheet
Designation:
BLOON 2 RM 3
Marker Type:
reference mark disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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this one is still there.

[Photos:]
photoLC1177

Found this early spring day.

[Photos:]
photoLC1177
Bloomington, IL

Documented History (by the NGS)

01/01/1961 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1961 1.4 MI SW FROM BLOOMINGTON. ABOUT 1.45 MILES SOUTH AND WEST ALONG STATE HIGHWAY 9 FROM ITS JUNCTION WITH U.S. HIGHWAY 150 IN THE NORTHWEST PART OF BLOOMINGTON, ABOUT 0.3 MILE WEST OF THE JUNCTION OF AN ASPHALT PAVED ROAD SOUTH, AT A FARM HOUSE NORTH OF THE ROAD, 164 FEET NORTH OF THE CENTER LINE OF STATE HIGHWAY 9, 128 FEET NORTHWEST OF THE SOUTHWEST CORNER OF THE FARM HOUSE, 1 FOOT EAST OF A FENCE, 133 FEET NORTH OF A FENCE CORNER, 35.0 FEET NORTH OF TRIANGULATION STATION BLOON 2, 43.8 FEET NORTH OF A WOODEN WITNESS POST, AND SET IN THE TOP OF A CONCRETE POST FLUSH WITH THE GROUND.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was computed from unverified reset data.
  • The geoid height was determined by GEOID99.

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