It rises near the Indiana state line, in western Darke County, approximately 10 miles (16 km) northwest of Greenville.

It flows east-southeast and is joined by Greenville Creek in Covington, approximately 5 miles (8 km) west of Piqua.

It flows south past Covington and Englewood, where it is dammed for flood control, then southeast to join the Great Miami River in Dayton.

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