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Details for Benchmark: KC0680

N 39° 29.130 W 091° 48.579 (NAD 83)

Altitude: 896

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

Location:
In MONROE county, MO View Original Datasheet
Designation:
TWAIN
Marker Type:
triangulation station disk
Setting:
set into the top of a round concrete monument
Stability:

Must Read!

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another day caching with my buddy .. .. Thanks Joeseppis4

WELL SINCE I WAS AT MOGA AT MARK TWAIN I HAD TO FINALLY GET TWAIN OFF THE LIST.
I CAMPED VERY NEAR THIS SPOT THIS YEAR.

I ALSO RECOVERED THIS ONE AT NIGHT ABOUT 10:30.
IT WAS A BLAST AS USUAL TO TRY TO FIND THINGS IN THE DARK.

ALSO RECOVERED REFERENCE MARK 1.
REFERENCE MARK 2 AND THE AZIMUTH MARK NOT FOUND THIS DATE.

THE AREA OF THE AZIMUTH IS HEAVILY GROWN OVER FROM WHAT I COULD FIND.

NGS REPORT TO FOLLOW.

[Photos:]
photoKC0680 TWAIN
TWAIN TRIANGULATION STATION
photoKC0690 TWAIN GPS
TWAIN TRIANGULATION STATION GPS
photoKC0680 TWAIN WP
TWAIN TRIANGULATION STATION WITNESS POST
photoKC0680 TWAIN RM 1
TWAIN TRIANGULATION STATION REFERENCE MARK 1

Found this BM today but couldn't find the reference marks

[Photos:]
photoKC0680, USCGS, Twain, Monroe Co., MO1-sm
photoKC0680, USCGS, Twain, Monroe Co., MO2-sm
photoKC0680, USCGS, Twain, Monroe Co., MO-Loc-sm

Documented History (by the NGS)

01/01/1958 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1958 (GWM) THE STATION IS ABOUT 11 MILES EAST OF PARIS, ABOUT 1 MILE WEST OF FLORIDA AND ON PROPERTY OWNED BY MRS. CLAUDE HENDERSON. IT IS 200 FEET NORTHEAST OF THE INTERSECTION OF COUNTY ROAD U AND A GRAVELED DRIVEWAY SOUTH, 42 FEET NORTHEAST OF THE INTERSECTION OF ROAD U AND A GRAVELED CROSSROAD, 34 FEET NORTH OF THE CENTERLINE OF ROAD U AND 4 FEET SOUTHWEST OF A WHITE WITNESS POST. THE MONUMENT PROJECTS 2 INCHES AND THE DISK IS STAMPED TWAIN 1958. TO REACH THE STATION FROM THE JUNCTION OF STATE HIGHWAY 107 AND COUNTY ROAD U AT THE SOUTH EDGE OF FLORIDA, GO WEST, SOUTH AND WEST FOR 1.55 MILES ON ROAD U TO A GRAVELED CROSSROAD AND THE STATION IN THE NORTHEAST ANGLE. TO REACH THE AZIMUTH MARK FROM THE STATION, GO WEST ON ROAD U FOR 0.3 MILE TO THE AZIMUTH MARK ON THE RIGHT AS DESCRIBED. REFERENCE MARK 1 IS 25 FEET SOUTH OF THE CENTERLINE OF ROAD U AND 15 FEET NORTHWEST OF A 24 INCH OAK TREE. THE MONUMENT PROJECTS 2 INCHES AND THE DISK IS STAMPED TWAIN NO 1 1958. REFERENCE MARK 2 IS 67 FEET NORTHWEST OF THE INTERSECTION OF THE CROSSROAD AND 37 FEET NORTH OF THE CENTERLINE OF ROAD U. THE MONUMENT PROJECTS 2 INCHES AND THE DISK IS STAMPED TWAIN NO 2 1958. THE AZIMUTH MARK IS 93 FEET NORTH OF THE NORTHWEST CORNER OF A BARN, 48 FEET WEST OF THE CENTERLINE OF A DIM TRACK ROAD, 42 FEET NORTH OF THE CENTERLINE OF ROAD U AND 3 FEET SOUTHEAST OF A WHITE WITNESS POST. THE MONUMENT PROJECTS 4 INCHES AND THE DISK IS STAMPED TWAIN 1958. HEIGHT OF LIGHT ABOVE STATION MARK 26 METERS.
01/01/1967 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1967 (LFS) STATION RECOVERED AS DESCRIBED AND ALL MARKS FOUND IN GOOD CONDITION. A METAL WITNESS POST WAS SET 1 FOOT EAST OF THE STATION AND 1.5 FEET WEST OF THE AZIMUTH MARK. THE ORIGINAL DESCRIPTION TO REACH THE STATION IS ADEQUATE FOR RECOVERY. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN- ABOUT 1 MILE WEST OF FLORIDA

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in February 2000.
  • The orthometric height was scaled from a topographic map.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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