Lakes / South Dakota / Lyman County / Reliance Lake
Reliance Lake, South Dakota
41.51 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
43.88 degrees N, 99.60 degrees W - Lyman 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 Reliance Lake Stacks Up
- Larger than 12% of the 533 lakes counted in South Dakota.
- About 50 miles from Pierre, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Heap Lake | Lyman | 5.8 mi | 69.23 acres |
| Byre Lake | Lyman | 12 mi | 84.51 acres |
| Bedashosha Lake | Buffalo | 16 mi | 313.58 acres |
| Brakke Dam | Lyman | 18 mi | 86.49 acres |
| Hamill Dam Reservoir | Tripp | 20 mi | 34.1 acres |
| Fate Dam | Lyman | 21 mi | 107.74 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Reliance Lake
How Big Is Reliance Lake?
Reliance Lake covers 41.51 acres in Lyman County, South Dakota.
What Is the Largest Lake in Lyman County?
Fate Dam is the largest lake in Lyman County, at 107.74 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 148194778). Verified October 30, 2026.