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Details for Benchmark: MF0114

N 41° 36.517 W 088° 02.700 (NAD 83)

Altitude: 653.52

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

Location:
In WILL county, IL View Original Datasheet
Designation:
M 140
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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Logging for the Settings Contest.
Found in good condition.

[This entry was edited by Team Fawlty on Wednesday, June 24, 2009 at 10:12:37 AM.]

[Photos:]
photoMF0114
photoMF0114 Setting
photoMF0114

Straightforward find.

My favorite; a benchmark disk in good condition. Found it easily with lemon16.

found it

Found it in good condition.

[Photos:]
photoMF0114

I stopped by, I've wanted to for quite a while, considering I pass it every day. It's in good condition, can't miss it. ( I didn't even have to use the gps!) I would have downloaded a photo but I'm not the tech head in the family.

N 41° 36.520 W 088° 02.715

Found at the above coords; mark is in good shape.

[Photos:]
photoMF0114 setting
photoMF0114 setting

Logged.

Found it

N 41° 36.520 W 088° 02.715

It is in good shape. It is right at the intersection of High Road and Highway 171( old 4A or Archer Ave.). It is marked my a metal post and sign.

[This entry was edited by zappy 45 on Sunday, May 22, 2005 at 11:34:37 AM.]

[Photos:]
photoMF0114 Lockport Ill.
It is Lockport Ill. At the intersection of High Road and Highway 171. It is next to the cemetery.
photoMF0114 Lockport Ill
photoMF0114 Rt.171

Documented History (by the NGS)

01/01/1947 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1947 1.5 MI NE FROM LOCKPORT. ABOUT 1.5 MILES NORTHEAST ALONG STATE HIGHWAY 4A FROM ITS INTERSECTION WITH STATE HIGHWAY 7 AT LOCKPORT, AT THE JUNCTION OF A ROAD LEADING NORTH TO ROMEO AND AT THE SOUTHEAST CORNER OF A CEMETERY, 168 FEET NORTHEAST OF THE CENTER OF THE JUNCTION OF THE ROADS, 45 FEET NORTHWEST OF THE CENTER LINE OF HIGHWAY 4A, 15.5 FEET SOUTHWEST OF A 12-INCH WILD CHERRY TREE, 9 FEET NORTHEAST OF A 12-INCH OAK TREE, 4 FEET SOUTHEAST OF THE CEMETERY FENCE, 2 FEET SOUTHWEST OF A WHITE WOODEN WITNESS POST, ABOUT 1/2 FOOT BELOW THE JUNCTION AND SET IN THE TOP OF A CONCRETE POST PROJECTING 4 INCHES.

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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