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Details for Benchmark: AA3923

N 45° 38.350 W 104° 22.450 (NAD 83)

Altitude: 3247.8

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

Location:
In CARTER county, MT View Original Datasheet
Designation:
P 34 RESET
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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Original mark was reset.

[Photos:]
photoAA3923 P 34 1934 RESET 1976
photoAA3923 E
LOOKS LIKE THE ORIGINAL POST WAS DUG OUT AND RE-PLANTED

Documented History (by the NGS)

01/01/1976 by MTDH (MONUMENTED)
DESCRIBED BY MONTANA DEPARTMENT OF HIGHWAYS 1976 (BFK) 21.0 MILES (33.8 KM) SOUTH OF EKALAKA, 111 FEET (33.8 M) RIGHT OF SURVEY STATION 2659+90 ON NEW CONSTRUCTED PROJECT NO RS 347 (17) , ON ALZADA-EKALAKA ROAD APPROXIMATELY 21 MILES (33.8 KM) SOUTH OF EKALAKA IN SW 1/4 OF SEC 19, T 2 S, R 60 E. NOTE--OLD DISK USED AS RESET.

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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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