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Details for Benchmark: MC1627

N 41° 06.233 W 083° 59.417 (NAD 83)

Altitude: 751.83

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

Location:
In PUTNAM county, OH View Original Datasheet
Designation:
H 344
Marker Type:
metal rod
Setting:
stainless steel rod in sleve
Stability:
Most reliable and expected to hold position/elevation well.

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I found the benchmark, but it is in poor condition. I didn't see the rod. The lid is missing, and some of the edge markings are worn away.

[Photos:]
photoMC1627
N 41° 06.246 W 083° 59.422

Station recovered as described in fair condition. The cover is missing. The metal station rod may be bent. Correct coordinates listed above. The 10/22/1992 station description is adequate.

[Photos:]
photoBM_MC1627_1.jpg
photoBM_MC1627_2.jpg
photoBM_MC1627_3.jpg
photoBM_MC1627_4.jpg
Looking west

Documented History (by the NGS)

01/01/1992 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 IN LEIPSIC, AT THE INTERSECTION OF BROADWAY AND 8TH STREET, 14.6 M (47.9 FT) NORTHWEST OF A FIRE HYDRANT, 4.4 M (14.4 FT) WEST OF AND LEVEL WITH THE EXTENDED CENTER OF THE STREET, 4.1 M (13.5 FT) SOUTH OF A WITNESS POST, AND 1.2 M (3.9 FT) NORTH OF THE EXTENDED CENTER OF BROADWAY AND UTILITY POLE NUMBER 445B2 53. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.
10/22/1992 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 IN LEIPSIC, AT THE INTERSECTION OF BROADWAY AND 8TH STREET, 14.6 M (47.9 FT) NORTHWEST OF A FIRE HYDRANT, 4.4 M (14.4 FT) WEST OF AND LEVEL WITH THE EXTENDED CENTER OF THE STREET, 4.1 M (13.5 FT) SOUTH OF A WITNESS POST, AND 1.2 M (3.9 FT) NORTH OF THE EXTENDED CENTER OF BROADWAY AND UTILITY POLE NUMBER 445B2 53. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.

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 April 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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