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Details for Benchmark: MG0715

N 41° 29.498 W 090° 27.812 (NAD 83)

Altitude: 708

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

Location:
In ROCK ISLAND county, IL View Original Datasheet
Designation:
MOLINE
Marker Type:
triangulation station disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

Reference Points

Must Read!

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Was surprised in doing a radius search from NGS to find a benchmark less than a mile from my home. I hadn't seen it before because Geocache.com has it listed under the archived or not found catagory. This is due to the Power Squadron having logged a not found in early '96 and again in '97, despite the fact that an engineering firm had logged it as found in late '96. So the power squadron couldn't find it both before AND after another firm had found it. I found it with no trouble at all, as a matter of fact, it would be darn hard to miss! The coordinates are the highest precision level, and it is an obvious location. It lies about a foot below the surface, but has been dug out to expose mark and has a thin white witness pole next to it. Will post pictures soon.

[Photos:]
photobenchmark location
This shows the hole dug to expose the marker. I would have liked to expose it myself, but the dirt in the hole was frozen and hard as rock. Will get back to it after a thaw and try to get a picture of the actual disk.
photoMG0715 benchmark
It was Cooooooold when I took this picture. It shows the narrow stake and the hole dug to expose the benchmark.

Documented History (by the NGS)

01/01/1930 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1930 (FLG) STATION IS ABOUT 1 MILE W AND 1-1/2 MILES S OF EAST MOLINE IN THE SW 1/4 OF SEC. 2, T 17 N, R 1 W, ON LAND OWNED BY THE ILLOWA KENNEL CLUB. THE STATION IS ON THE N SIDE OF THE ROAD VARIOUSLY KNOWN AS THE COLONIAL, MOLINE TWENTY-THIRD STREET, OR BLUFF ROAD. IT IS 32 FEET N OF THE ROAD FENCE AND S OF THE RACE TRACK OF THE ILLOWA KENNEL CLUB WHICH IS ABOUT 1/2 MILE W OF THE JUNCTION OF THE COLONIAL ROAD WITH THE EAST MOLINE ROAD. SURFACE, UNDERGROUND, AND REFERENCE MARKS ARE STANDARD BRONZE DISKS SET IN CONCRETE. REFERENCE MARK NO. 1 IS ON S SIDE OF COLONIAL ROAD OPPOSITE KENNEL CLUB. IT IS ON FENCE LINE AND IS ABOUT 100 FEET W OF A NARROW DIRT ROAD LEADING S. REFERENCE MARK NO. 2 IS ON FENCE LINE ON S SIDE OF COLONIAL ROAD ABOUT 3/4 MILE W OF ITS JUNCTURE WITH THE EAST MOLINE ROAD. IT IS ABOUT 0.2 MILE W OF THE KENNEL CLUB GRANDSTAND. TO REACH FROM EAST MOLINE TAKE ROAD KNOWN AS EAST MOLINE ROAD S FROM U.S. HIGHWAY 32, 1-1/2 MILES TO COLONIAL ROAD, THENCE W 1/2 MILE TO ILLOWA KENNEL CLUB. HEIGHT OF SIGNAL ABOVE STATION MARK - 35 METERS.
01/01/1931 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1931 (HWH) MARK FOUND AS DESCRIBED. DESCRIPTION ADEQUATE. ALL MARKS IN GOOD CONDITION.
01/01/1957 by CGS (MARK NOT FOUND)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1957 (VES) THE ILLOWA KENNEL CLUB, DOG TRACK AND GRAND STAND NO LONGER EXIST. THE IMMEDIATE AREA OF THE STATION WAS GRADED WHEN THE DOG TRACK WAS REMOVED. A THOROUGH SEARCH FAILED TO REVEAL ANY TRACE OF THE SURFACE STATION MARK. REFERENCE MARK NO. 1 WAS RECOVERED IN GOOD CONDITION. A BREIF SEARCH FAILED TO REVEAL ANY TRACE OF REFERENCE MARK NO. 2.
08/16/1996 by USPSQD (MARK NOT FOUND)
RECOVERY NOTE BY US POWER SQUADRON 1996 MARK NOT FOUND.
08/26/1996 by SECI (GOOD)
RECOVERY NOTE BY SMITH ENG CONS INC 1996 (MGR) RECOVERED AS DESCRIBED EXCEPT THAT THE KENNEL CLUB IS NOW A GOLF DRIVING RANGE. TO REACH FROM THE JUNCTION OF ILLINOIS ROUTE 5 (JOHN DEERE ROAD) AND INTERSTATE ROUTE 74/U.S. ROUTE 6, PROCEED EAST ON ILLINOIS ROUTE 5 FOR APPROXIMENTLY 1.6 MI (2.6 KM) TO THE JUNCTION OF ILLINOIS ROUTE 5 AND 53RD STREET, TURN LEFT (NORTH) ON 53RD STREET AND PROCEED FOR APPROXIMENTLY 1.4 MI (2.3 KM) TO THE JUNCTION OF 53RD STREET AND 41ST AVENUE, TURN RIGHT (EAST) ON 41ST AVENUE AND PROCEED FOR APPROXIMENTLY 0.1 MI (0.2 KM) TO THE STATION ON THE LEFT (NORTH) SIDE OF 41ST AVENUE. THE STATION IS LOCATED 61.2 FT (18.7 M) NORTH OF THE CENTERLINE OF 41ST AVENUE, 36.6 FT (11.2 M) NORTHEAST OF A POWER POLE, 52.2 FT (15.9 M) EAST OF A NORTHEAST CORNER OF A CONCRETE SIDEWALK, 98 FT (29.9 M) EAST OF A POWER POLE, 44.7 FT (13.6 M) EAST OF A SOUTHEAST CORNER OF A CONCRETE SIDEWALK, 231 FT (70.4 M) SOUTHWEST OF A FENCE CORNER THAT RUNS NORTH AND EAST, 217.5 FT (66.3 M) WEST OF THE CENTERLINE OF A GRAVEL FIELD ENTRANCE, AND 31.7 FT (9.7 M) NORTH OF A FENCE THAT RUNS EAST-WEST.
06/03/1997 by USPSQD (MARK NOT FOUND)
RECOVERY NOTE BY US POWER SQUADRON 1997 MARK NOT FOUND.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in September 1998.
  • The orthometric height was determined by GPS observations and a high-resolution geoid model.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.

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