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Details for Benchmark: CZ1392

N 32° 55.517 W 111° 41.433 (NAD 83)

Altitude: 1416.5

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

Location:
In PINAL county, AZ View Original Datasheet
Designation:
L 416
Marker Type:
bench mark disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Recovered as described, in good condition.

[Photos:]
photoL 416 / CZ1392
A close-up of the mark, with the GPSr.
photoL 416 / CZ1392
A close-up of the mark alone.
photoL 416 / CZ1392
A wider view of the area, looking northwest along the freeway.

Documented History (by the NGS)

01/01/1962 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1962 7.30 MI NE FROM CASA GRANDE. 0.2 MILES EAST ALONG STATE 93 FROM THE POST OFFICE AT CASA GRANDE, THENCE 0.2 MILES NORTH ALONG MARSHALL STREET, THENCE 3.7 MILES EAST ON FLORENCE BLVD. TO A CANAL, THENCE NORTH ALONG THE EAST SIDE OF THE CANAL FOR 2.05 MILES TO CROSSROADS, THENCE NORTHWEST ALONG DIRT ROAD FOR 1.15 MILES TO THE MARK, 2.8 FT NORTH OF A STEEL WITNESS POST, A STANDARD DISK SET IN TOP OF A CONCRETE POST PROJECTING 8 INCHES.
01/01/1977 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1977 FOLLOWING NOTE SHOULD BE ADDED. ROAD MENTIONED IN FINAL (THENCE) REFERENCE IS NOW CENTER DIVIDER OF INTERSTATE 10. BM IS 1.15 MI SE. OF MCCARTNEY RD. OVERPASS.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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 geoid height was determined by GEOID99.

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