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Details for Benchmark: OL0154

N 43° 02.233 W 087° 54.867 (NAD 83)

Altitude: 594.54

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

Location:
In MILWAUKEE county, WI View Original Datasheet
Designation:
102
Marker Type:
survey disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

Must Read!

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Drove by with Mandolinman while we were in town for a few days.

Found this with Fidefiendwhile visiting town.

Went in search of benchmarks while in Milwaukee for meetings. We found this odd shaped one easily.

[Photos:]
photoOL0154 Milwaukee, WI

Staying across the street from this one. In good shape

[Photos:]
photobm

Mrs. Geo(Race)r made quick work of this one. Our first oval disk!

[Photos:]
photoOL0154

J found this one after checking out the first week of the Westown Farmers’ Market.

RECOVERED AS DESCRIBED

My first benchmark. Interesting histirical location.

Found it while heading for another cache
BR from Austria, Dschinis

Stamping crossed out as described. Interesting little part of downtown (Zeidler Park) that I've never been to before.

[Photos:]
photoWisconsin Electric

Gotta read the description I found it much closer to
N43 02.198 W87 54.863. I would not call the disk battered as much as crossed out. I have a picture which makes it clear.

[Photos:]
photoOL0154 - Wisconsin Milwaukee - Close
As noted the name as been crossed off.
photoOL0154 - Wisconsin Milwaukee - Near
photoOL0154 - Wisconsin Milwaukee - far

Documented History (by the NGS)

Unknown by WI3100 (MONUMENTED)
01/01/1972 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 AT MILWAUKEE. AT MILWAUKEE, 0.25 MILE NORTHEAST OF THE NEW CHICAGO, MILWAUKEE, ST PAUL AND PACIFIC RAILROAD STATION, AT THE NORTHWEST CORNER OF THE INTERSECTION OF NORTH 3 RD STREET AND EVERETT STREET, AT THE SOUTHWEST CORNER OF THE WISCONSIN ELECTRIC COMPANY BLDG, 40 1/2 FEET EAST OF THE CENTER LINE OF NORTH 3 RD STREET, 26 FEET NORTH OF THE CENTER LINE OF WEST EVERETT STREET, 3.7 FEET NORTH OF THE SOUTHWEST CORNER OF THE BUILDING SET IN THE TOP OF A LIMESTONE WATER TABLET AND 2 1/2 FEET ABOVE THE SIDEWALK. SEC 29, T 7 N, R 22 E. NOTE-- THE DISK IS BATTERED. STAMPING NO LONGER LEGIBLE.
01/01/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (RH) 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 determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. WARNING-Repeat measurements at this control monument indicate possible vertical movement.
  • 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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