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Details for Benchmark: HB0983

N 37° 17.500 W 089° 31.450 (NAD 83)

Altitude: 350.89

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

Location:
In CAPE GIRARDEAU county, MO View Original Datasheet
Designation:
N 12
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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Recovered in good condition per the 1981 description.

The mark is 0.5 feet east of an orange Carsonite witness post.

GPS (HH2) coordinates for the mark: N37 17.492, W89 31.470

[Photos:]
photoHB0983 - Disk - Cape Girardeau, Missouri
photoHB0983 - Eye level view
photoHB0983 - Looking west
Arrow points to the location of the mark.
photoHB0983 - Looking north
Arrow points to the location of the mark.
photoHB0983 - Looking south
Arrow points to the location of the mark.

ive prolly driven by this one many times and never noticed it.

[Photos:]
photoHb0983

Found this today while working. Weve been surveying the MO. Dry Docks.

Found as described. Witness post in good condition.

JohnTee

[Photos:]
photoHB0983
photoHB0983 Witness Post

An easy one to find. Just off the edge of South Fountain Street, and marked by a witness pole.

Documented History (by the NGS)

01/01/1932 by CGS (MONUMENTED)
01/01/1934 by CGS (GOOD)
DESCRIBED BY COAST AND GEODETIC SURVEY 1934 0.9 MI S FROM CAPE GIRARDEAU. 0.9 MILE SOUTH ALONG THE ST. LOUIS-SAN FRANCISCO RAILWAY FROM THE STATION AT CAPE GIRARDEAU, CAPE GIRARDEAU COUNTY, 45 YARDS NORTHWEST OF SEMAPHORE 1325, 110 FEET NORTH OF A CROSSING WARNING SIGN, 72 FEET NORTH OF THE NORTHWEST CORNER OF THE INTERSECTION OF SOUTH FOUNTAIN AND ELM STREETS, 45 FEET WEST OF THE WEST TRACK, 12 FEET WEST OF THE CENTERLINE OF SOUTH FOUNTAIN STREET, AND JUST WEST OF THE CURB. A STANDARD DISK, STAMPED 351.282 N 12 1932 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 3 INCHES ABOVE THE CURB.
01/01/1981 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981 IN CAPE GIRARDEAU AT THE INTERSECTION OF ELM STREET AND FOUNTAIN STREET IN THE WEST CURB OF FOUNTAIN STREET, 22.86 METERS (75.0 FEET) NORTH OF CENTER LINE OF ELM STREET, 3.66 METERS (12.0 FEET) WEST OF CENTER LINE OF FOUNTAIN STREET. THE MARK IS 0.25 M ABOVE THE STREET.

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. WARNING-Repeat measurements at this control monument indicate possible vertical movement.
  • 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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