The average gradient of the Mahomet Valley above Beardstown, Illinois, is about 7 inches per mile (11.1 cm per kilometer).[16] The altitude of the valley floor where it occurs beneath the present floodplain of the Wabash River should be about 410 feet (120 m).[3] The profile of the Teays is a gorge-like valley entrenched within a broad, old age valley. Steep walls 200 feet (61 m)high can be recognized along the buried trench.