Lakes / South Dakota / Roberts County / Round Lake
Round Lake, Roberts County, South Dakota
38.05 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.88 degrees N, 96.61 degrees W - Roberts 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 Round Lake Stacks Up
- Larger than 9% of the 533 lakes counted in South Dakota.
- About 72 miles from Watertown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| East Clubhouse Lake | Roberts | 1.3 mi | 328.08 acres |
| Cottonwood Lake | Roberts | 10 mi | 597.25 acres |
| Lake Traverse | Roberts | 14 mi | 10,747.48 acres |
| Dobberstien Slough | Roberts | 16 mi | 73.14 acres |
| Lake Bdesaka | Roberts | 17 mi | 149.99 acres |
| Knebel Slough | Roberts | 19 mi | 32.87 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Round Lake
How Big Is Round Lake?
Round Lake covers 38.05 acres in Roberts County, South Dakota.
What Is the Largest Lake in Roberts County?
Lake Traverse is the largest lake in Roberts County, at 10,747.48 acres.
Largest Lakes in South Dakota
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake Oahe | Dewey | 309,912.57 acres | - |
| 2 | Lake Francis Case | Charles Mix | 82,166.92 acres | - |
| 3 | Lake Sharpe | Hughes | 58,419.67 acres | - |
| 4 | Lewis and Clark Lake | Bon Homme | 25,141.99 acres | - |
| 5 | Lake Thompson | Kingsbury | 13,887.93 acres | - |
All 533 South Dakota lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 126211750). Verified October 30, 2026.