A ravine or gorge, usually one with water running through.
An open channel or trough used to direct or divert liquids.
To transport (logs of wood) by floating them along a water-filled channel or trough.
A flume specifically constructed to transport lumber and logs down mountainous terrain to a sawmill by using flowing water.
An amusement park ride where passengers sit in a hollow log and travel along a track or circuit powered mostly by the flow of water.