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Details for Benchmark: DV0247

N 33° 36.417 W 112° 18.233 (NAD 83)

Altitude: 1140.5

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

Location:
In MARICOPA county, AZ View Original Datasheet
Designation:
RV 87
Marker Type:
rivet
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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In place

[Photos:]
photoIMG_20121024_103915
photoIMG_20121024_103912

found at N33 36.426 W112 18.253

[Photos:]
photowide angle view of rivit
photogps and rivit

Found RV 87 on the way home from work!

[Photos:]
photoBM - RV 87 (012109)b
Site overview; essentially facing north from south.
photoBM - RV 87 (012109)a

Recovered as described, in good condition.

[Photos:]
photoRV 87 / DV0247
A wide view of the general area, looking northwest.
photoRV 87 / DV0247
A close-up of the mark alone.
photoRV 87 / DV0247
A close-up of the mark, with the GPSr.

This one was a little harder to get to, and a little harder to recognize once we found it. But alas, it is still there.

Documented History (by the NGS)

Unknown by ATSFRR (MONUMENTED)
01/01/1933 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1933 4.4 MI NW FROM PEORIA. MONEL METAL RIVET, ON A. T. AND S. F. RY. CO. RIGHT OF WAY, IN MILE 176, AT AQUA FRIA RIVER, AT SOUTHEAST END OF RAILROAD BRIDGE NO. B-176, ON TOP OF CONCRETE ABUTMENT, SOUTHWEST OF TRACK.

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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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