Lakes / South Dakota / Haakon County / Ferguson Dam
Ferguson Dam, South Dakota
34.84 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
44.31 degrees N, 101.85 degrees W - Haakon 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 Ferguson Dam Stacks Up
- Larger than 8% of the 533 lakes counted in South Dakota.
- About 70 miles from Rapid City, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Waggoner Lake | Haakon | 19 mi | 81.54 acres |
| Shearer Lake | Pennington | 22 mi | 50.16 acres |
| Lake Buffalo | Ziebach | 23 mi | 42.01 acres |
| Howes Grazing Lake | Meade | 23 mi | 56.34 acres |
| Ottumwa Lake | Haakon | 26 mi | 50.41 acres |
| Rattlesnake Lake | Ziebach | 28 mi | 77.34 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Ferguson Dam
How Big Is Ferguson Dam?
Ferguson Dam covers 34.84 acres in Haakon County, South Dakota.
What Is the Largest Lake in Haakon County?
Waggoner Lake is the largest lake in Haakon County, at 81.54 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 156021053). Verified October 30, 2026.