Ocoee Flume

Polk County, Tennessee, United States

A wooden flume carrying water to power turbines once stretched 5.2 miles through the mountains above what is now the [[rabbit:Ocoee River]], delivering 1,200 cubic feet per second of diverted river water to generate electricity for an aluminum smelter 30 miles away. The engineering marvel, completed in 1912, transformed a remote Cherokee hunting ground into an industrial outpost where water defied gravity to serve distant factories.

The flume site sits at 1,890 feet elevation in the rugged terrain of southeastern Tennessee's Polk County, where the Ocoee River cuts through the ancient [[rabbit:Appalachian Mountains]] on its journey toward the Tennessee River. Steep ridges rise on both sides of the narrow valley, their slopes covered in second-growth hardwood forest that conceals the remnants of what was once one of the South's most ambitious hydroelectric projects. The river here drops 268 feet over five miles, creating the gradient that made the flume financially viable despite its enormous construction costs.

The Cherokee called this river Tah-ko-hee-yu, meaning "place of the cattails," referring to the marshes where the river slowed in its lower reaches. For centuries before European contact, Cherokee hunters followed game trails through these mountains, crossing the Ocoee at shallow fords during seasonal migrations between winter camps in the Tennessee Valley and summer hunting grounds in the high country. The river's swift current and rocky bottom made it unsuitable for canoe travel, but its tributaries held brook trout and its banks supported cane breaks where deer came to graze.

The [[rabbit:Cherokee removal]] of 1838 emptied these mountains of their indigenous inhabitants, but white settlers found the terrain too steep and the soil too thin for profitable farming. The Ocoee's isolation persisted until 1890, when mining companies discovered copper deposits in the hills north of the river. The [[rabbit:Tennessee Copper Company]] began large-scale operations that would eventually strip 50 square miles of forest and create a moonscape of eroded hills visible from space.

The copper smelting process required enormous amounts of electricity, more than could be generated by the small coal-fired plants then available in rural Tennessee. Engineers surveying the Ocoee River calculated that its flow and gradient could produce the necessary power, but the rocky gorge made conventional dam construction prohibitively expensive. Instead, they designed an elaborate system that would divert most of the river's water through a wooden flume built along the mountainside, carrying it five miles downstream to a powerhouse where it would drop through penstocks to spin turbines.

Construction began in 1910 with crews of Italian and Eastern European immigrants who lived in work camps along the route. The flume itself measured 12 feet wide and 6 feet deep, supported by timber trestles that spanned ravines and clung to cliff faces hundreds of feet above the river. Workers used hand tools and black powder to carve a shelf into the mountainside, following contour lines to maintain the gentle gradient necessary to keep water flowing. The [[rabbit:Ocoee Flume Line]] required 2.5 million board feet of lumber, most of it old-growth chestnut and oak cut from the surrounding forests.

The completed flume began operation in May 1912, carrying water from a diversion dam near the North Carolina border to Powerhouse No. 2, where it generated 22,500 kilowatts of electricity. High-voltage transmission lines carried this power to the copper smelters near [[rabbit:Copperhill, Tennessee]], supporting an industrial operation that employed 1,200 workers at its peak. The flume operated continuously for 64 years, requiring constant maintenance as mountain weather and time took their toll on the wooden structure.

The [[rabbit:Tennessee Valley Authority]] purchased the entire Ocoee River system in 1939 as part of its comprehensive development of the Tennessee River watershed. TVA rebuilt sections of the aging flume but gradually shifted toward more conventional dam-and-reservoir projects that required less maintenance. The authority completed Ocoee Dam No. 3 in 1943, creating a reservoir that backed water nearly to the original diversion point and eliminated the need for most of the flume.

By the 1970s, only a two-mile section of the original flume remained in service, carrying water around a stretch of river that TVA had designated for whitewater recreation. The [[rabbit:1996 Summer Olympics]] brought international attention to the Ocoee when it hosted the whitewater slalom events, transforming the former industrial waterway into a world-class sporting venue. During the Olympics, operators controlled river flow by adjusting releases from the flume, creating consistent rapids for competition while demonstrating the ongoing utility of the 1912 engineering system.

The last section of the Ocoee Flume was decommissioned in 2006 after nearly a century of operation. Today, hikers following the [[rabbit:Ocoee Flume Trail]] can trace the route where wooden trestles once carried millions of gallons of diverted river water through the mountains. Concrete foundations and rusted machinery mark the sites of former powerhouses, while the river itself runs free for the first time since 1912, its natural flow restored to carve new channels through bedrock worn smooth by industrial centuries.

The flume's legacy persists in the landscape it created: a river corridor where controlled releases still serve recreational boating, mountainsides reforested after decades of copper mining, and a trail system that follows the precise engineering grade calculated more than a century ago to move water efficiently through mountain terrain where Cherokee hunters once tracked deer along ancient paths.