Lakes / South Dakota / Perkins County / Shadehill Reservoir
Shadehill Reservoir, South Dakota
3,801.22 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.73 degrees N, 102.26 degrees W - Perkins 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 Shadehill Reservoir Stacks Up
- Larger than 96% of the 533 lakes counted in South Dakota.
- The largest lake in Perkins County among those counted.
- About 124 miles from Rapid City, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Flat Creek Lake | Perkins | 5.0 mi | 161.36 acres |
| Lemmon Lake | Perkins | 12 mi | 166.8 acres |
| Owen Lake | Perkins | 20 mi | 136.4 acres |
| Morristown Lake | Corson | 27 mi | 108.48 acres |
| White Hill Dam | Perkins | 33 mi | 41.51 acres |
| Morristown East Lake | Corson | 33 mi | 100.32 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Shadehill Reservoir
How Big Is Shadehill Reservoir?
Shadehill Reservoir covers 3,801.22 acres in Perkins County, South Dakota.
What Is the Largest Lake in Perkins County?
Shadehill Reservoir is the largest lake in Perkins County, at 3,801.22 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 131721781). Verified October 30, 2026.