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Details for Benchmark: LK0552

N 40° 10.198 W 102° 37.315 (NAD 83)

Altitude: 4045

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

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

Reference Points

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Found in good cond.

[Photos:]
photoLK0552 1935

Documented History (by the NGS)

1/1/1935 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1935 (WRP) STATION IS 4 MILES NORTH AND 5 MILES EAST OF YUMA, COLORADO, IN THE SW 1/4 NW 1/4 SEC. 3, T. 2 N., R. 47 W., ON A SMALL ROUND KNOLL WHICH IS SURROUNDED BY CULTIVATED FIELDS, ON LAND OWNED BY MRS. VONA KELLY OF FORT LUPTON, COLORADO, AND LEASED BY R.W. POWELL WHO LIVES ABOUT 1 MILE NORTHERLY. IT IS 190 FEET NORTH OF AN EAST-WEST FENCE, 0.1 MILE EAST OF A NORTH-SOUTH TRACK ROAD AND FENCE, AND PROJECTS 4 INCHES. REFERENCE MARK NO. 1 IS SOUTH OF THE STATION, 1 FOOT NORTH OF AN EAST-WEST FENCE, AND PROJECTS 2 INCHES. REFERENCE MARK NO. 2 IS WEST OF THE STATION AND PROJECTS 2 INCHES. AZIMUTH MARK IS SOUTH-SOUTHWEST OF THE STATION, IN A LONE SOUTHWEST FENCE CORNER AT THE INTERSECTION OF SECTION-LINE ROADS, 4 FEET NORTHEAST OF THE CORNER POST, 28 FEET EAST OF THE CENTERLINE OF THE EAST-WEST ROAD, 39 FEET NORTH OF THE CENTERLINE OF THE EAST-WEST ROAD, AND PROJECTS 4 INCHES. A 20-FOOT STAND CLEARS ALL LINES.
1/1/1969 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1969 (JLC) THE STATION MARK, REFERENCE MARKS 1 AND 2 AND THE AZIMUTH MARK WERE RECOVERED IN GOOD CONDITION. THE DISTANCES TO THE REFERENCE MARKS AND THE DISTANCE BETWEEN THE REFERENCE MARKS WERE MADE MARK TO MARK, SLOPE, THIS DATE. THE DIRECTIONS TO THE REFERENCE MARKS AND THE AZIMUTH MARK CHECKED. THE DISTANCE TO THE AZIMUTH MARK IS 0.5 MILE NOT 0.4 MILE AS STATED IN THE 1935 RECORDS. THE STATION IS LOCATED IN THE SOUTHWEST CORNER OF THE NORTHWEST 1/4 OF SECTION 3, T. 2 N., R. 47 W. AND ON THE SUMMIT OF A LOW GRASSY KNOLL IN PASTURE LAND OWNED BY MR. SELMER PRESCOTT. IT IS LOCATED 5 MILES EAST AND 4 MILES NORTH OF YUMA. TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 34 AND STATE HIGHWAY 59, IN THE EAST EDGE OF YUMA, GO EAST ON U.S. HIGHWAY 34 FOR 5.05 MILES TO A SIDE ROAD LEFT. TURN LEFT AND GO NORTH ON A GRAVELED ROAD FOR 3.25 MILES TO A CROSSROAD AND THE AZIMUTH MARK IN THE NORTHEAST ANGLE. CONTINUE NORTH ON THE GRAVELED ROAD FOR 0.5 MILE TO A T-FENCE CORNER AND THE STATION ABOUT 100 YARDS EAST-NORTHEAST OF THE FENCE CORNER. THE STATION MARK IS A STANDARD DISK STAMPED VONA 1935, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT PROJECTING 7 INCHES. IT IS 190 FEET NORTH OF AN EAST-WEST WIRE FENCE. REFERENCE MARK 1 IS A STANDARD DISK STAMPED VONA NO 1 1935, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT PROJECTING 1 INCH. IT IS 1.1 FEET NORTH OF THE EAST-WEST FENCE AND ABOUT 15 FEET LOWER THAN THE STATION MARK ELEVATION. REFERENCE MARK 2 IS A STANDARD DISK STAMPED VONA NO 2 1935, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT PROJECTING 6 INCHES. IT IS ON THE WEST SLOPE OF THE STATION HILL AND IS ABOUT 3 FEET LOWER THAN THE STATION MARK ELEVATION. THE AZIMUTH MARK IS A STANDARD REFERENCE MARK DISK STAMPED VONA AZIMUTH 1935, SET IN THE TOP OF A 12-INCH SQUARE CONCRETE MONUMENT PROJECTING 1 INCH. IT IS 36 FEET NORTH OF THE CENTER OF AN EAST-WEST GRAVELED ROAD, 33 FEET EAST OF A NORTH-SOUTH GRAVELED ROAD, 4.7 FEET NORTHWEST OF A TELEPHONE POLE AND 3.0 FEET EAST OF A METAL WITNESS POST. R.M. 1 TO R.M. 2 MEASUREMENT = 216.11 FT., (65.870M) HEIGHT OF LIGHT ABOVE STATION MARK 46.6 FEET.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in January 1993.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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