Mill Race (log flume)

A mill race, when specifically referring to the logging industry, is a type of flume used to transport logs via flowing water from one location to another, often over considerable distances and challenging terrain. This use is distinct from the mill races associated with water-powered mills. In the context of logging, a mill race log flume is typically a constructed channel, often elevated on trestles or dug into the ground, that directs water flow to carry logs downstream.

The primary purpose of a log flume mill race was to efficiently move large quantities of logs from remote logging areas to sawmills or waterways suitable for broader transport. Construction materials varied depending on available resources but frequently included wood, earth, and stone. The design focused on maintaining sufficient water flow and minimizing friction to ensure logs moved smoothly without becoming lodged.

These log flume mill races were essential infrastructure in regions with extensive logging operations, particularly in areas where traditional river drives were impractical due to terrain or water volume limitations. They allowed the economic exploitation of timber resources in previously inaccessible locations, significantly impacting both the logging industry and the landscape. The use of log flume mill races declined with the advent of improved road networks and motorized transport.