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Details for Benchmark: QP0586

N 45° 53.150 W 095° 22.650 (NAD 83)

Altitude: 1404.26

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

Location:
In DOUGLAS county, MN View Original Datasheet
Designation:
K 1
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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An early (1904) flat, B.M. disk.

[Photos:]
photoQP0586 PLN K 1 1904
FLAT B. M. CENTER X MAY BE FACTORY
photoQP0586 E
photoQP0586 KENSINGTON STONE REPLICA

Easy find by the description. Store is now an architectural firm.

[Photos:]
photoThe mark
photostore front
N 45° 53.174 W 095° 22.650

Found in good condition as described.

The EPE of my GPS got worse as I got close to the building, but still, the scaled coordinates seemed to be 80-90 feet off.

The Minnesota Dept. of Transportation description from 2004 is as follows:

IN ALEXANDRIA, IN SILL AT JLG ARCHITECTURE, AT THE INTERSECTION OF BROADWAY AND SIXTH AVENUE, 146.0 FEET NORTH OF SIXTH AVENUE, 45.0 FEET EAST OF BROADWAY, IN FRONT OF THE STORE OF F.E. AND GEORGE RAITER, 9.0 FEET SOUTH OF THE MIDDLE OF THE DOORWAY, 7.5 FEET NORTH OF THE SOUTH SIDE OF THE BUILDING, IN THE TOP SURFACE OF A SANDSTONE SILL, 0.25 FOOT FROM THE OUTER EDGE OF THE SILL, 0.25 FOOT HIGHER THAN THE SIDEWALK.

[Photos:]
photoK 1, Alexandria, Minnesota
Closeup view of this CGS benchmark.
photoK 1, Alexandria, Minnesota, Eye-level
Looking down at the disk from eye level.
photoK 1 Area, Alexandria, Minnesota
Looking southeast.

did it and diden't know it

Only a few blocks from my house! Made a stop by it on the way out caching!

[Photos:]
photo6th & Broadway WPT
N 45° 53.177 W 095° 22.651

It was interesting to find this benchmark, as I have passed it countless times, but never noticed it. The buildings downtown prevented my GPS from getting good satellite reception, so I took a reading from the curb with an accuracy of +/-30.4 ft. My GPS read 1430 ft at this location.

[Photos:]
photoQP0586
The benchmark is at the bottom of the building to the left of the doorway.
photoQP0586
View from eye level

Found as described. See photo attached

[Photos:]
photoBenchmark @ 6th & Broadway

Mark found as described. Will upload photo soon. RandyorMJ

Documented History (by the NGS)

Unknown by CGS (MONUMENTED)
01/01/1966 by MNDT (GOOD)
DESCRIBED BY MN DEPT OF TRANSP 1966 IN ALEXANDRIA. AT ALEXANDRIA, DOUGLAS COUNTY, AT THE INTERSECTION OF BROADWAY AND SIXTH AVENUE, ON THE EAST SIDE OF BROADWAY, ABOUT 26 YARDS NORTH OF THE NORTH LINE OF SIXTH AVENUE, IN FRONT OF THE STORE OF F.E. AND GEORGE RAITER, 7-1/2 FEET NORTH OF THE SOUTH SIDE OF THE BUILDING, ABOUT 3 YARDS SOUTH OF THE MIDDLE OF THE DOORWAY, IN THE TOP SURFACE OF A SANDSTONE SILL, ABOUT 1/4 FOOT FROM THE OUTER EDGE OF THE SILL, AND ABOUT 1/4 FOOT HIGHER THAN THE SIDEWALK. A STANDARD DISK, STAMPED ELEV. 1,403.580 FEET.

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 1991.
  • 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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