Lakes / South Dakota / Roberts County / Cottonwood Lake
Cottonwood Lake, Roberts County, South Dakota
597.25 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.84 degrees N, 96.82 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 Cottonwood Lake Stacks Up
- Larger than 84% of the 533 lakes counted in South Dakota.
- About 67 miles from Watertown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Dobberstien Slough | Roberts | 6.3 mi | 73.14 acres |
| Knebel Slough | Roberts | 8.3 mi | 32.87 acres |
| Lake Bdesaka | Roberts | 9.3 mi | 149.99 acres |
| Lake Traverse | Roberts | 10 mi | 10,747.48 acres |
| Indian Slough | Roberts | 10 mi | 29.16 acres |
| Round Lake | Roberts | 10 mi | 38.05 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Cottonwood Lake
How Big Is Cottonwood Lake?
Cottonwood Lake covers 597.25 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 126211951). Verified October 30, 2026.