Lakes / South Carolina / Barnwell County / Lake Cynthia
Lake Cynthia, South Carolina
39 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Carolina
33.34 degrees N, 81.27 degrees W - Barnwell 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 Lake Cynthia Stacks Up
- Larger than 38% of the 276 lakes counted in South Carolina.
- About 48 miles from Columbia, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Matthews Millpond | Barnwell | 7.4 mi | 36 acres |
| Edgar A Brown Lake | Barnwell | 8.0 mi | 94 acres |
| Fuller Pond | Barnwell | 11 mi | 39 acres |
| Craigs Pond | Barnwell | 13 mi | 134 acres |
| Dean Swamp Pond | Orangeburg | 13 mi | 33 acres |
| Twin Lakes | Orangeburg | 15 mi | 31 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lake Cynthia
How Big Is Lake Cynthia?
Lake Cynthia covers 39 acres in Barnwell County, South Carolina.
What Is the Largest Lake in Barnwell County?
Pond B is the largest lake in Barnwell County, at 203 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 156317352). Verified October 30, 2026.