Omega Delta was founded at Iowa State University in 1889. Originally the fourth national chapter of Delta Delta Delta and the second sorority at Iowa State. The arrival of Tri Delta was vital because it "helped break the feeling prevalent among many eastern sororities that a chapter in an agricultural college was beneath their dignity." Following the allowance of greek chapters back onto campus under President A.B. Storms, Tri Delta was reestablished as the Omega Delta Chapter in 1912.