Lakes / South Carolina / Oconee County / Hartwell Lake
Hartwell Lake, South Carolina
18,037 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Carolina
34.51 degrees N, 83.02 degrees W - Oconee 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 Hartwell Lake Stacks Up
- Ranks #4 for surface area among the South Carolina lakes counted so far - 18,037 acres.
- The largest lake in Oconee County among those counted.
- About 42 miles from Greenville, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Beaverdam Watershed Four Lake | Oconee | 3.7 mi | 28 acres |
| Coneross Watershed 21 Reservoir | Oconee | 13 mi | 31 acres |
| Coneross Creek Reservoir | Oconee | 16 mi | 61 acres |
| Issaqueena Lake | Pickens | 18 mi | 106 acres |
| Lake Keowee | Oconee | 21 mi | 16,883 acres |
| Crystal Lake | Oconee | 23 mi | 51 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Hartwell Lake
How Big Is Hartwell Lake?
Hartwell Lake covers 18,037 acres in Oconee County, South Carolina.
What Is the Largest Lake in Oconee County?
Hartwell Lake is the largest lake in Oconee County, at 18,037 acres.
Largest Lakes in South Carolina
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Marion | Clarendon | 80,044 acres | - |
| 2 | Lake Moultrie | Berkeley | 56,828 acres | - |
| 3 | Lake Murray | Lexington | 48,761 acres | - |
| 4 | Hartwell Lake | Oconee | 18,037 acres | - |
| 5 | Lake Keowee | Oconee | 16,883 acres | - |
All 276 South Carolina 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 136157939). Verified October 30, 2026.