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Details for Benchmark: MC1665

N 41° 13.200 W 083° 39.033 (NAD 83)

Altitude: 704.17

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

Location:
In WOOD county, OH View Original Datasheet
Designation:
Z 349
Marker Type:
metal rod
Setting:
stainless steel rod in sleve
Stability:
Probably hold position/elevation well.

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N 41° 13.264 W 083° 39.095

Station recovered as described in good condition. Coordinates listed above.

[Photos:]
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Looking north. I-75 SB lanes on right.

Documented History (by the NGS)

01/01/1993 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1993 18.2 KM (11.30 MI) NORTHERLY ALONG INTERSTATE HIGHWAY 75 FROM THE JUNCTION OF U.S. HIGHWAY 224 IN FINDLAY (EXIT 159), 22.9 M (75.1 FT) WEST OF THE CENTERLINE OF THE SOUTHBOUND LANES OF THE HIGHWAY, 17.1 M (56.1 FT) NORTH OF A BRACED FENCE POST, 6.0 M (19.7 FT) EAST OF THE CENTER OF INSLEY ROAD, 0.6 M (2.0 FT) WEST OF A WITNESS POST AND FENCE, AND 0.3 M (1.0 FT) BELOW THE LEVEL OF THE ROAD. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP. THE SLEEVE DEPTH DOES NOT MEET THE SPECIFICATIONS FOR A CLASS A MARK.

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 January 1994.
  • 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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