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Details for Benchmark: CZ1931

N 32° 33.516 W 111° 29.481 (NAD 83)

Altitude: 817

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

Location:
In PINAL county, AZ View Original Datasheet
Designation:
ROTTEN
Marker Type:
triangulation station disk
Setting:
in rock outcrop
Stability:

Reference Points

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Located Rotten BM and RM #2 in good condition.
RM #1 is gone.

[Photos:]
photoROTTEN BM
photoROTTEN BM
photoROTTEN BM & GPSr
photoVIEW SE

Found in good shape.

[Photos:]
photoROTTEN
photoROTTEN w/ GPSr

Found while caching; in great shape.

[Photos:]
photoROTTEN benchmark

Found in good shape, along with RM2.

[Photos:]
photoCZ1931 w GPS
photoCZ1931 Ref 2 w GPS

Recovered station ROTTEN along with RM 2, both in good condition. RM 1 not found.

[Photos:]
photoCZ1931 ROTTEN closeup
photoCZ1931 ROTTEN wide view looking NE
photoCZ1931 ROTTEN RM 2
photoWith the GPSr

Found in good shape as described. Also located RM2, but not RM1...

[Photos:]
photoCZ1931
photoCZ1931 RM2

Recovered as described, in good condition. AZ mark recovered separately, RM2 recovered in good condition, RM1 searched for but not found.

[Photos:]
photoROTTEN / CZ1931
A close-up of the mark, with the GPSr.
photoROTTEN / CZ1931
A close-up of the mark alone.
photoROTTEN / CZ1931
A close-up of RM 2.
photoROTTEN / CZ1931
A wide view of the general area, looking north.
photoROTTEN / CZ1931
A wide view of the general area, looking east.
photoROTTEN / CZ1931
A wide view of the general area, looking south.
photoROTTEN / CZ1931
A wide view of the general area, looking west.

Documented History (by the NGS)

01/01/1936 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1936 (JB) ABOUT 4 MILES WEST-NORTHWEST OF SASCO, 9 MILES NORTH-NORTHEAST OF SILVERBELL, IN T. 10S., R. 8 E., ON THE SUMMIT OF THE WESTERLY AND HIGHEST ONE OF A GROUP OF THREE SIMILAR HILLS OF ABOUT THE SAME ELEVATION LYING SOUTH OF PICACHO PEAK AND STATE ROUTE NO. 84, ON THE CENTRAL AND HIGHEST PEAK OF THE HILL, ON A SMALL ROCKY KNOLL, IN THE CENTER OF THE ROUNDED SUMMIT. MARKED BY A STANDARD BRONZE DISK. REFERENCE MARK NO. 1, A STANDARD BRONZE REFERENCE DISK IS NEAR THE EAST EDGE OF THE SUMMIT, IN TOP OF A FLAT ROCK LEDGE AND 5.875 METERS (19.27 FEET) FROM STATION. REFERENCE MARK NO. 2, A STANDARD BRONZE REFERENCE DISK IS ON HIGH, ROCKY POINT, IN SHARP ROCK OUTCROP, 2.870 METERS (9.42 FEET) FROM STATION. THE AZIMUTH MARK, A STANDARD COAST AND GEODETIC SURVEY BENCH MARK DISK STAMPED W 91 1935, SET IN TOP OF A CONCRETE POST, IS ON ROAD LEADING TO FOOT OF STATION PEAK, ABOUT 400 YARDS EAST-SOUTHEAST OF A RANCH HOUSE, 40 YARDS SOUTH-SOUTHWEST OF THE CENTER OF THE ROAD, 20 FEET NORTHEAST OF A CATTLE TRAIL LEADING SOUTHWEST ACROSS FLAT AND 1.3 MILES FROM STATION.
01/01/1960 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1960 (CTH) STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND IN GOOD CONDITION. FOLLOWING IS A NEW DESCRIPTION TO REACH THE STATION. REACHED FROM THE FIRST BAPTIST CHURCH IN PICACHO BY GOING SOUTH ON PICACHO HI-WAY FOR 8.4 MILES TO A T-INTERSECTION, TURN RIGHT THEN LEFT ON GRADED ROAD, SOUTH, FOR 0.5 MILE TO RANCH BUILDINGS, CROSS A CATTLEGUARD JUST WEST OF BUILDINGS AND GO SOUTH FOR 1.0 MILE TO RANCH BUILDINGS, TURN LEFT THROUGH GATE JUST BEFORE REACHING BUILDINGS AND FOLLOW GRADED ROAD FOR ABOUT 100 YARDS (TO REACH THE AZIMUTH MARK FROM THIS POINT CONTINUE ON GRADED ROAD FOR 0.8 MILE TO A NORTH-SOUTH EARTH DIKE, CROSS DIKE AND TURN LEFT, PICKING WAY THROUGH BRUSH ABOUT 110 YARDS TO THE MARK), TURN LEFT AT FORKS AND FOLLOW GRADED ROAD 0.3 MILE TO REVERSE FORKS, FROM HERE PICK WAY TO BASE OF HILL AND END OF TRUCK TRAVEL. FROM END OF TRUCK TRAVEL PACK SOUTHEASTERLY TO TOP OF HILL AND STATION. ABOUT 1/2 HOUR PACKING TIME.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in August 1993.
  • 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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