Reported Crop Circles for the State of South Dakota -

Leola, McPherson County (early August, 1990)

A 80-foot long by 30-foot wide "reversed question mark'' design surrounded by three rectangular 'bars' 5-feet in diameter arranged on the points of an equilateral triangle. The plants were bent over two inches above the ground. When discovered, the field had no tracks, nor were there any broken or kinked stalks of wheat in the circle formation.

Eyewitness report only.

Crop type: wheat

Source: Dakota Farmer, Oct 1990 Issue; “The Summer 1990 Crop Circles”, Michael Chorost & Colin Andrews, MUFON UFO Journal No. 272 December 1990
 

City / County / Date:

• Veblen Township, Marshall County, South Dakota
  (August 11, 1965)
• Eagle Butte, Dewey County
  (July 1990)
• Leola, McPherson County
  (early August 1990)
• Clark, Clark County
  (September 8, 1992)
• Fort Randall, Gregory County (June 30, 1996)
• Watertown, Codington County (August 8, 1996)
• Menno, Hutchinson County (September 9, 1999)