the Clich River (red) is one of the upper tributaries of the Tennessee River, as is the Powell River to the west and the Holston River to the east
Source: US Geological Survey (USGS), Streamer
The Clinch River stretches nearly 300 miles from its headwaters on the Virginia-West Virginia border near Tazewell to its confluence with the Tennessee River at Kingston, Tennessee. Within Virginia, there are 135 miles.1
It apparently was known as the Pelisipi by the Cherokee, but the colonists chose to name it after an early explorer. Dr. Thomas Walker recorded in his journal that his party crossed the river, probably at Looney's Gap near modern Sneedville, on April 9, 1750 before reaching Cumberland Gap:2
An alternative etymology is that in the early days of European settlement, someone crossing the river started to drown. Supposedly he yelled at others to grab and rescue him, calling out "Clinch Me."3
Pelisipi was the Cherokee name for the Clinch River
Source: Library of Congress, An accurate map of North America... (John Mitchell, 1775?)
The Clinch River is a tributary of the Tennessee River. At the peak of the Ice Age about 18,000 years ago, the ice sheet isolated the Tennessee River from its earlier connection with drainages in the Mississippi River Valley. That isolation led to evolutionary changes in the fish and mussel species in the upper Tennessee River tributaries; new species developed.
According to the Nature Conservancy:4
the Clinch River flows into the Tennessee River downstream of Knoxville
Source: Wikipedia, List of rivers of Virginia
the Clinch River flowed in a meander west of St. Paul in 1935
Source: US Geological Survey (USGS), St. Paul VA 1:24,000 scale topographic map (1935)
the former meander of the Clinch River, after a rechannelling project, is now Oxbow Lake Park
Source: US Geological Survey (USGS), St. Paul VA 1:24,000 scale topographic map (2022)
oxbows form naturally when a river erodes a new channel that isolates an earlier meander
Source: National Park Service, Fluvial Features—Meandering Stream