Okabena Creek is a 40-mile-long (64 km) waterway in southern Minnesota. It is a tributary, via the short Diversion Creek, of Heron Lake, the outlet of which flows to the Des Moines River. Okabena Creek begins in Worthington, Minnesota, connecting by a ditch to the outlet of Okabena Lake, then flows northeast past the towns of Brewster and Okabena to the Heron Lake/South Heron Lake system.