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Details for Benchmark: DV0237

N 33° 33.267 W 112° 12.300 (NAD 83)

Altitude: 1147.1

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

Location:
In MARICOPA county, AZ View Original Datasheet
Designation:
R 23
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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Found it really good shape. The culvert is still in good shape also so should stay for a while. Not sure what the new upcoming Northern Parkway is going to do to it. Hopefully nothing.
used n33 33.300, W 112 12 347

[Photos:]
photoR23
photor 23
looking S E
photoR 23
Culvert

Found it. A bit scratched up, but you can still make out the designation.

[Photos:]
photoDV0237 Closeup
photoDV0237 GPSr
photoDV0237's Mount

Recovered Recovered in good condition. Handheld GPSr indicated coordinates of N 33 33 17.9 W 112 12 20.9 (DMS).

[Photos:]
photoDV0237 R 23 closeup
photoDV0237 R 23 wide shot looking SE
photoWith the GPSr

The culvert is obscured by vegetation, but still present. Recovered as described, in good condition.

[Photos:]
photoR 23 / DV0237
A close-up of the mark, with the GPSr.
photoR 23 / DV0237
A close-up of the mark alone.
photoR 23 / DV0237
A wide view of the general area, looking southeast.

There is no longer a culvert at the described location. Assumed destroyed.

Documented History (by the NGS)

01/01/1933 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1933 1.5 MI NW FROM GLENDALE. ON A. T. AND S. F. RIGHT OF WAY, 0.3 MILES SOUTHEAST OF MILEPOST 182, ON TOP OF EASTERLY CONCRETE HEADWALL OF RAILROAD CULVERT NO. B-183.
01/01/1939 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1939 RECOVERED IN GOOD CONDITION.
01/01/1975 by DOD (GOOD)
RECOVERY NOTE BY US DEPARTMENT OF DEFENSE 1975 RECOVERED IN GOOD CONDITION.

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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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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