When I started looking at boats people kept asking me Kentucky Lake vs Lake Barkley like I had to pick a team, and since I live near Clarksville on the Cumberland my home water is Lake Barkley pretty much by default. I still wanted to know the actual difference though, two big lakes sitting side by side and joined by a ditch you can drive a boat through, so this is the side-by-side with numbers from the folks who run the dams.
| Lake Barkley | Kentucky Lake | |
|---|---|---|
| River | Cumberland | Tennessee |
| Dam | Barkley Dam | Kentucky Dam |
| Runs the dam | U.S. Army Corps of Engineers | Tennessee Valley Authority |
| Length | 118.1 river miles (Corps) | about 184 miles (TVA) |
| Shoreline | about 1,004 miles (Corps) | about 2,064 miles (TVA) |
| Surface area | 57,900 acres per the Corps lake page (another Corps doc says 54,308) | about 160,300 acres (TVA) |
Sources: Corps Lake Barkley page, TVA Kentucky Reservoir, Tennessee Encyclopedia.
Kentucky Lake is the big one
By TVA's numbers Kentucky Lake has roughly twice the shoreline and close to three times the surface area of Barkley, and TVA calls it its largest reservoir by surface area, with Kentucky Dam at 8,422 feet long and 206 feet high. Barkley's no puddle either though, and a thousand miles of shoreline is a lot of coves to go poke around in.
Different rivers, different agencies
Kentucky Lake is the Tennessee River and TVA runs that dam, while Lake Barkley is the Cumberland and the Corps of Engineers runs that one. For a boater that mostly matters for where you look stuff up, since lake levels and lock notices and rules come from different agencies, so for Barkley I check the Corps' Nashville District and for Kentucky Lake it's TVA's lake info.
The canal
The fun part is near Grand Rivers, Kentucky, where a canal connects the two lakes. The Corps water control manual describes it as about 1.75 miles long and uncontrolled with no lock, since the lakes sit at about the same level and you just idle through. So the whole Barkley or Kentucky Lake thing is kind of a fake choice if you've got the range, because you could do both in one day.
The strip of land between them is Land Between the Lakes National Recreation Area, which the Forest Service runs and says covers more than 170,000 acres, and that's why both lakes feel kinda wild for long stretches with no houses lining that shore.
How they look on the map
Going off the maps and the agency numbers, Lake Barkley is long and river-like in Tennessee and gets wider in Kentucky, with a narrow channel and barge traffic up on the Clarksville end and eight Corps-listed marinas mostly down on the Kentucky end, which I listed in my Lake Barkley guide. Kentucky Lake is bigger, wider water for longer stretches with lots of marinas and towns along a 184-mile run, and more open water means more room for the wind to build waves on a long reach, which is just physics.
From Clarksville the route as I understand it is to launch at Liberty Park or McGregor Park and head downstream on the Cumberland, which is Lake Barkley the whole way, past Dover and Fort Donelson and into Kentucky where the lake widens out, and then take the canal near Grand Rivers onto Kentucky Lake. If the canal works the way the Corps describes you never need a lock, but it's a long haul and I'd plan fuel and weather and daylight and check every marina's fuel hours before leaving.
I started this whole thing talking about a 21-foot Raider Delta and sized up to the Coastal 230 in February, since more boat felt like the call for how this river actually gets run. Raider says the Coastal adds self-bailing decks, and Doreen has a hardtop, which I'm hoping makes a windy day on wide water a lot less dramatic. The build page has the whole thought process and the gallery has the shop photos. Both lakes exist because of the big dam era, and Film 04 covers the Cumberland side of that in a couple minutes.
Before you head to either one, know which state you're in, since Tennessee and Kentucky boater education rules are different and my Tennessee boating license post covers both. The Corps posts Barkley levels and TVA posts Kentucky Lake levels, and while you won't need a lock for the canal, Barkley and Kentucky dams both have locks if you're going past either one.
FAQ
Is Kentucky Lake bigger than Lake Barkley?
Yes. TVA lists Kentucky Lake at about 160,300 acres with about 2,064 miles of shoreline. The Corps lists Lake Barkley at 57,900 acres with about 1,004 miles of shoreline.
Are Lake Barkley and Kentucky Lake connected?
Yes. A canal about 1.75 miles long near Grand Rivers, Kentucky, connects them. The Corps describes it as uncontrolled, with no lock.
What river makes Lake Barkley?
The Cumberland River. Kentucky Lake is on the Tennessee River.
Who manages Lake Barkley and Kentucky Lake?
The U.S. Army Corps of Engineers operates Barkley Dam. The Tennessee Valley Authority operates Kentucky Dam. Land Between the Lakes, between them, is managed by the U.S. Forest Service.
