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Details for Benchmark: PP3402

N 44° 36.083 W 092° 51.417 (NAD 83)

Altitude: 948.36

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

Location:
In DAKOTA county, MN View Original Datasheet
Designation:
2 GAF
Marker Type:
survey 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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first of 3 on my way into work. Easy find. Found as described.

[Photos:]
photoPP3402

Documented History (by the NGS)

1/1/1955 by USGS (MONUMENTED)
8/8/1988 by MNDT (GOOD)
DESCRIBED BY MN DEPT OF TRANSP 1988 THE MARK IS LOCATED ABOUT 1.25 MI (2.01 KM) WEST OF THE CITY OF MIESVILLE, 1.1 MI (1.8 KM) WEST ALONG TRUNK HIGHWAY 61 FROM THE WEST BOUNDARY OF MIESVILLE TO THE JUNCTION OF TRUNK HIGHWAY 50, THENCE WEST ALONG HIGHWAY 50 FOR 0.1 MI (0.2 KM) TO ITS JUNCTION WITH TRUNK HIGHWAY 20, IN THE NORTHWEST QUADRANT OF THE INTERSECTION OF HIGHWAYS 20 AND 50 AND IN THE SE 1/4 OF SECTION 9, T113N, R17W. THE MARK IS 10.5 FT (3.2 M) NORTH OF AND ABOUT LEVEL WITH THE CENTERLINE OF HIGHWAY 50 AT MILEPOINT 25.7, 46.0 FT (14.0 M) WEST-NORTHWEST OF THE EXTENDED CENTERLINE OF HIGHWAY 20, 72.8 FT (22.2 M) NORTH-NORTHEAST OF A LIGHT STANDARD, 32.8 FT (10.0 M) NORTH-NORTHEAST OF A TELEPHONE CABLE MARKER POST, 29.5 FT (9.0 M) SOUTH-SOUTHWEST OF POWER POLE NUMBER 120 AND 0.6 FT (0.2 M) EAST-SOUTHEAST OF A STEEL WITNESS POST. THE MARK, A STANDARD USGS SURVEY DISK STAMPED---2 GAF 1955---, IS SET IN THE TOP OF A CONCRETE POST THAT PROJECTS 3 INCHES ABOVE THE SURFACE OF THE GROUND.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1995.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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