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Details for Benchmark: ET0216

N 34° 23.610 W 112° 05.000 (NAD 83)

Altitude: 3879.8

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

Location:
In YAVAPAI county, AZ View Original Datasheet
Designation:
ASH
Marker Type:
triangulation station disk
Setting:
in a boulder
Stability:
May hold, but of type commonly subject to surface motion.

Reference Points

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Recovered Station Mark , Reference Mark 1, and Reference Mark 2 in good condition as described.

[Photos:]
photoET0216 - Benchmark - Yavapai County, AZ
photoET0216 - Northeast looking Southwest
photoET0216 - RM1
photoET0216 - RM1 looking toward Mark
photoET0216 - RM2
photoET0216 - RM2 looking toward Mark

Documented History (by the NGS)

01/01/1958 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1958 24.5 MI N FROM BLACK CANYON. 19.25 MILES NORTH ALONG STATE HIGHWAY 69 FROM THE POST OFFICE IN BLACK CANYON, THENCE 5.3 MILES NORTH ALONG STATE HIGHWAY 79 TO THE SOUTH END OF A HIGHWAY CUT, FROM HERE GO NORTHWESTERLY TO THE HIGHEST PART OF THE RIDGE AND THE STATION, 5.5 FEET NORTH OF THE WITNESS POST, CEMENTED IN A DRILL HOLE IN A BOULDER THAT PROJECTS 6 INCHES.
01/01/1959 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1959 (SLH) THE STATION IS LOCATED ABOUT 400 FEET WEST OF ARIZONA STATE HIGHWAY 79, ON THE EAST END AND HIGHEST PART OF A LOW EAST-WEST RIDGE. IT IS 5 MILES NORTH OF CORDES JUNCTION AND 6 MILES WEST OF DUGAS. TO REACH THE STATION FROM CORDES JUNCTION, GO NORTH ON ARIZONA STATE HIGHWAY 79 FOR 5.3 MILES TO THE SOUTH END OF A HIGHWAY CUT ON THE LEFT AND THE END OF TRUCK TRAVEL. PACK NORTHWESTERLY TO THE HIGHEST PART OF THE RIDGE AND THE STATION. THE STATION MARK IS A STANDARD DISK STAMPED ASH 1958, SET IN A DRILL HOLE IN A BOULDER THAT PROJECTS 6 INCHES AND IS 5.5 FEET NORTH OF A WITNESS POST. R.M. 1 IS A STANDARD DISK STAMPED ASH NO 1 1958, SET IN A DRILL HOLE IN A BOULDER THAT PROJECTS 3 INCHES AND IS 36.7 FEET NORTH OF THE WITNESS POST. R.M. 2 IS A STANDARD DISK STAMPED ASH NO 2 1958, SET IN A DRILL HOLE IN A BOULDER THAT PROJECTS 8 INCHES AND IS 33.6 FEET NORTHWEST OF THE WITNESS POST. TRIANGULATION STATION BEN MAY BE USED AS AN AZIMUTH MARK. (SEE DESCRIPTION THEREOF.)
01/01/1969 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1969 (FLA) NO TEXT AVAILABLE.
01/01/1971 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 (LFS) THE STATION MARK, REFERENCE MARKS 1 AND 2 AND BEN 1958 WHICH SERVES FOR AN AZIMUTH MARK WERE RECOVERED AS DESCRIBED. TO REACH THE STATION FROM CORDS JUNCTION GO NORTH ALONG I-17 FOR 5.5 MILES TO A SMALL HILL ON THE LEFT AND THE STATION ON TOP. 1958 DISTANCES TO REFERENCE MARKS WAS USED. AIRLINE DISTANCE AND DIRECTION FROM NEAREST TOWN--5-1/2 MILES NORTH OF CORDS JUNCTION.
01/01/1974 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 (RTR) THE STATION IS LOCATED 539 FEET WEST OF THE NORTHBOUND LANES OF INTERSTATE 17. IT IS 5 MILES NORTH OF CORDES JUNCTION AND 6 MILES WEST OF DUGAS. TO REACH FROM CORDES JUNCTION ( INTERSECTION STATE HIGHWAY 69 AND INTERSTATE 17, GO NORTH ON INTERSTATE 17 FOR 5.4 MILES. THE STATION IS 539 FEET WEST OF THE NORTH BOUND LANES AND ON THE HIGHEST PART OF THE RIDGE. THE TWO REFERENCE MARKS AND STATION MARK ARE ALL IN GOOD CONDITION AND AS PREVIOUSLY DESCRIBED IN THE 1959 COAST DESCRIPTION. DISTANCE AND DIRECTION CORDES JUNCTION, 5.4 MILES N.

Control Text

  • 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 vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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