Lower Falls of the Yellowstone River, Wyoming.

Rock wall at Clifty Falls near Madison, Indiana.

Cataract Falls, Eel River, Indiana.

Cataract River, Clifty Falls near Madison, Indiana.

Cataract Falls on Mill Creek in Lieber State Recreation Area in Indiana.

Cataract Falls on Mill Creek in Lieber State Recreation Area in Indiana.

Cataract Falls on Mill Creek in Lieber State Recreation Area in Indiana.

Cataract Falls on Mill Creek, the largest waterfall in Cloverdale, Indiana.

Spokane Falls in Spokane, Washington.

Bridge and Spokane Falls in Spokane, Washington.

Spokane Falls in Spokane, Washington.