Lakes / South Dakota / Ziebach County / Bedners Dam
Bedners Dam, South Dakota
54.12 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.08 degrees N, 101.64 degrees W - Ziebach 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 Bedners Dam Stacks Up
- Larger than 18% of the 533 lakes counted in South Dakota.
- About 80 miles from Pierre, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lantry Lake | Dewey | 9.9 mi | 27.92 acres |
| Durkee Lake | Meade | 21 mi | 96.37 acres |
| Eagle Butte Lake | Dewey | 21 mi | 25.56 acres |
| Peach Lake | Dewey | 22 mi | 54.36 acres |
| Rattlesnake Lake | Ziebach | 26 mi | 77.34 acres |
| Livermant Lake | Dewey | 27 mi | 64.49 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Bedners Dam
How Big Is Bedners Dam?
Bedners Dam covers 54.12 acres in Ziebach County, South Dakota.
What Is the Largest Lake in Ziebach County?
Rattlesnake Lake is the largest lake in Ziebach County, at 77.34 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 151680340). Verified October 30, 2026.