Details for Benchmark: CG1066
N 31° 45.529 W 110° 45.370 (NAD 83)
Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)
- In PIMA county, AZ View Original Datasheet
- Marker Type:
- NGS Benchmark
- setting not listed - see description
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Documented History (by the NGS)
|01/01/1936 by CGS (MONUMENTED)
|DESCRIBED BY COAST AND GEODETIC SURVEY 1936 (JB)
THE STATION IS LOCATED ABOUT 1/2 MILE S OF THE OLD VILLAGE OF GREATERVILLE, A GENERAL STORE AND POST OFFICE STILL BEING MAINTAINED. ON THE HIGHEST HILL APPROACHING FROM THE E, BUT ALL THE COUNTRY TO THE W BEING HIGHER. IT IS ABOUT 33 MILES SE OF TUCSON AND 3 MILES W OF HIGHWAY NO. 83. THE HILL THE STATION IS LOCATED ON IS A GRASSY HILL, SURROUNDED BY SCATTERED LOW TIMBER.
THE STATION PROJECTS ABOUT 4 INCHES ABOVE THE GROUND AND IS ABOUT 75 YARDS N OF TRACK ROAD TO GREATERVILLE.
R.M. NO. 1 IS NE OF THE STATION AND PROJECTS ABOUT 4 INCHES ABOVE GROUND.
R.M. NO. 2 IS ESE OF THE STATION AND PROJECTS ABOUT 4 INCHES ABOVE THE GROUND.
THE AZIMUTH MARK IS ABOUT 0.4 MILE NNE OF THE STATION ON TOP OF A HILL 0.15 MILE N OF THE POST OFFICE AT GREATERVILLE VIA THE ROAD LEADING N AND E TO HIGHWAY 83 AND 10 FEET E OF THE ROAD, 36 FEET E OF A N AND S FENCE, PROJECTING ABOUT 4 INCHES ABOVE GROUND.
A 4-FT. STAND WILL CLEAR ALL LINES.
TO REACH THE STATION FROM TUCSON, GO E A DISTANCE OF 21.2 MILES ON U.S. NO. 80 HIGHWAY FROM THE JUNCTION OF HIGHWAYS NOS. U.S. 80 AND STATE NO. 89 AT THE S EDGE OF TUCSON. TURN S ON STATE ROAD NO. 83 AND GO FOR A DISTANCE OF 20 MILES TO A ROAD TO THE W, WITH A SIGN READING GREATERVILLE AND BOX CANYON. TURN W AT THIS POINT AND GO FOR A DISTANCE OF 2.9 MILES. TAKE THE LEFT FORK AT THIS POINT AND CONTINUE IN A SOUTHERLY DIRECTION FOR A DISTANCE OF 1.8 MILES TO THE POST OFFICE OR GREATERVILLE. CONTINUE S CROSSING THE WASH IN FRONT OF THE POST OFFICE AND BEARING TO THE RIGHT IN FRONT OF AN ADOBE SHACK TO PICK UP A VERY POOR TRACK ROAD, CONTINUING SW AROUND A HILL TO THE TOP OF A SMALL SADDLE. THE STATION BEING ABOUT 75 YARDS NW OF THIS POINT ON TOP OF THE HILL.
- The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in August 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- The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)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.