The Glacial till plains are in the Northwest of Ohio. Ohio ( is a Midwestern state of the United States. As part of the Great Lakes region, Ohio has long been a cultural and geographical crossroads This region is fertile and has gently rolling moraine hills created by the movement of glaciers. Moraine refers to any glacially formed accumulation of unconsolidated glacial debris (soil and rock which can occur in currently glaciated and formerly glaciated regions such as those "Glacial" and "Glaciation" redirect here For the geological periods see Glacial period. Glaciers created the Ohio River. The Ohio River is the largest Tributary by volume of the Mississippi River.