Lakes / Tennessee / Roane County / Watts Bar Lake
Watts Bar Lake, Tennessee
33,441 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Tennessee
35.75 degrees N, 84.65 degrees W - Roane County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Watts Bar Lake Stacks Up
- Ranks #2 for surface area among the Tennessee lakes counted so far - 33,441 acres.
- The largest lake in Roane County among those counted.
- About 43 miles from Knoxville, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Tranquilechee Lake | Cumberland | 15 mi | 25 acres |
| Whiteoak Lake | Roane | 15 mi | 2,271 acres |
| Sweetwater Creek Watershed Number One Reservoir | McMinn | 15 mi | 45 acres |
| Blue Spring Slough | Rhea | 17 mi | 59 acres |
| Ballard Mill Lead Mine Pond | Monroe | 18 mi | 26 acres |
| Brown Creek Lake | Cumberland | 22 mi | 118 acres |
Straight-line distance between lake centers.
Facts and Figures
Largest Lakes in Tennessee
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Kentucky Lake | Henry | 144,085 acres | - |
| 2 | Watts Bar Lake | Roane | 33,441 acres | - |
| 3 | Cherokee Lake | Hamblen | 29,436 acres | - |
| 4 | Douglas Lake | Jefferson | 29,224 acres | - |
| 5 | Chickamauga Lake | Hamilton | 27,237 acres | - |
All 249 Tennessee lakes ranked by surface area
Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 132368052). Verified October 30, 2026.