Details for Benchmark: ON0260
N 43° 49.467 W 091° 18.167 (NAD 83)
Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)
- In HOUSTON county, MN View Original Datasheet
- 2801 Z
- Marker Type:
- bench mark disk
- set into the top of a round concrete monument
- May hold, but of type commonly subject to surface motion.
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Documented History (by the NGS)
|01/01/1965 by MNHD (MONUMENTED)
|01/01/1970 by NGS (GOOD)
|DESCRIBED BY NATIONAL GEODETIC SURVEY 1970
AT LA CRESCENT. AT LA CRESCENT, 90 FEET SOUTH OF THE CENTER OF THE U.S. HIGHWAYS 14, 16 AND 61 OVERPASS FOR THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD, 58.0 FEET SOUTHEAST OF THE SOUTH END OF THE WEST CONCRETE ABUTMENT OF THE OVERPASS, 31 1/2 FEET WEST OF THE CENTER LINE OF A PAVED ROAD, 2.4 FEET SOUTH OF THE SOUTH END OF THE BOTTOM CONCRETE STEP IN A CONCRETE STAIRWAY, 2.0 FEET NORTHEAST OF A METAL WITNESS POST, ABOUT 25 FEET BELOW THE LEVEL OF THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 2 INCHES. SEC. 10, T104N, R 4W
|01/01/1985 by NGS (GOOD)
|RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1985
RECOVERED IN GOOD CONDITION. THE STAMPING WAS REPORTED AS--2801 Z 1956 BUT IS 2801 Z 1956.
|08/06/1990 by NGS (GOOD)
|RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1990
IN LA CRESCENT, AT THE INTERSECTION OF SOUTH CHESTNUT STREET, U.S. HIGHWAYS 14 AND 61, AND STATE HIGHWAY 16, 27.2 M (89.2 FT) SOUTHWEST OF THE CENTER OF THE HIGHWAYS, 20.6 M (67.6 FT) SOUTHWEST OF THE MOST SOUTHERLY OF 4 PIERS OF AN OVERPASS, 9.6 M (31.5 FT) WEST OF THE CENTER OF THE STREET, 0.7 M (2.3 FT) SOUTH OF THE BOTTOM STEP OF A STAIRWAY LEADING TO THE OVERPASS, 0.6 M (2.0 FT) NORTHEAST OF A WITNESS POST, 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE STREET, AND THE MONUMENT IS FLUSH WITH THE GROUND SURFACE.
- 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.