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Details for Benchmark: CG0308

N 31° 47.267 W 110° 53.050 (NAD 83)

Altitude: 3665.6

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

Location:
In PIMA county, AZ View Original Datasheet
Designation:
FOREST SERVICE
Marker Type:
survey disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Found in great shape at N 31 47.280 W 110 53.060.

[Photos:]
photoCG0308
photoCG0308 Distance

Found

[Photos:]
photoIMG_20120817_155958
photoIMG_20120817_160007

Found today with Tucson Coyotes.

[Photos:]
photo0308
photo0308

Found on the way to Madera Canyon, good condition. Marked only with USDA Forest Service and an off-center cross.

[Photos:]
photoForest mark

Found as described.

[Photos:]
photoBM
photoBridge looking west

Documented History (by the NGS)

Unknown by USFS (MONUMENTED)
01/01/1962 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1962 7.3 MI SE FROM CONTINENTAL. 6.9 MILES SOUTHEAST ALONG A PAVED ROAD FROM CONTINENTAL, THENCE 0.35 MILE SOUTH ON PAVED ROAD. THE MARK IS SET IN THE NORTHEAST CORNER OF A CONCRETE BRIDGE GUARD RAIL WITH FS 3663.20 PAINTED ON IT.

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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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