North Fork Kentucky River

Kentucky River
The Kentucky River Palisades at Raven Run Park
Country	United States
Basin features
Main source	Beattyville, Kentucky 669 ft (204 m)
River mouth	Ohio River
Basin size	6,950 sq mi (18,000 km2)
Physical characteristics
Length	259 mi (417 km)
Discharge	Average rate: 10,064 cu ft/s (285.0 m3/s)

The Kentucky River is a tributary of the Ohio River, 260 miles (418 km) long, in the U.S. Commonwealth of Kentucky. The river and its tributaries drain much of the central region of the state, with its upper course passing through the coal-mining regions of the Cumberland Mountains, and its lower course passing through the Bluegrass region in the north central part of the state. Its watershed encompasses about 7,000 square miles (18,000 km²). It supplies drinking water to about one-sixth of the population of the Commonwealth of Kentucky.

The river is no longer navigable above Lock 4 at Frankfort. Concrete bulkheads have been poured behind the upper lock gates of Locks 5-14 to strengthen the weakest link in the dam structures. All 14 dams are now under the management of the state-run Kentucky River Authority. The primary importance of the locks today is to maintain a pool that allows the city of Lexington to draw its drinking water from the river. Despite the fact that the Lexington area receives well over 40 inches (1,000 mm) of precipitation annually, the limestone, karst geology of that area means that surprisingly little natural surface water is found in the region.

Winchester, Beattyville, Irvine, Richmond, Lancaster, Nicholasville, Harrodsburg, Wilmore, Versailles, Lawrenceburg, and Frankfort also draw water from the river for their municipal water supplies. It is estimated that over 700,000 people depend on the river for water.