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Details for Benchmark: MG0655

N 41° 30.583 W 090° 31.000 (NAD 83)

Altitude: 571.2

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

Location:
In ROCK ISLAND county, IL View Original Datasheet
Designation:
Y 52 RESET
Marker Type:
bench mark disk
Setting:
retaining walls, concrete ledge, etc.
Stability:
May hold, but of type commonly subject to surface motion.

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Documented History (by the NGS)

01/01/1978 by LOCENG (MONUMENTED)
DESCRIBED BY LOCAL ENGINEER (INDIVIDUAL OR FIRM) 1978 IN MOLINE. IN MOLINE, IN TOP OF BARRIER WALL OF RAMP A, 130 FEET NORTH OF CENTER-LINE OF 3RD AVENUE, AND 45 FEET WEST OF CENTERLINE OF THE 15TH STREET EXTENDED FROM THE SOUTH.
08/16/1996 by USPSQD (MARK NOT FOUND)
RECOVERY NOTE BY US POWER SQUADRON 1996 MARK NOT FOUND.
06/02/1997 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1997 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was computed from unverified reset data. No vertical observational check was made to the station.
  • The geoid height was determined by GEOID99.

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