NM21-767-088 Decatur, Illinois, U.S.A. Winter 1995-1996 Located in a rich farm and livestock producing area of central Illinois, Decatur is apparent in this southeast-looking, low-oblique photograph. Situated on the Sangamon River (dammed here to form Decatur Lake east and southeast of the city), Decatur is a railroad and industrial center with huge plants for processing corn and soybeans. Coal deposits underlie the area. The runways of the Decatur Municipal Airport are visible east of Decatur Lake. In Decatur Abraham Lincoln received his first party convention endorsement for the nomination of President of the United States in May 1860.