Lakes / South Dakota / Sully County / Walker Lake
Walker Lake, South Dakota
59.59 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
44.60 degrees N, 99.70 degrees W - Sully 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 Walker Lake Stacks Up
- Larger than 21% of the 533 lakes counted in South Dakota.
- About 36 miles from Pierre, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Woodruff Lake | Hughes | 7.8 mi | 85.91 acres |
| Durrstein Lake | Sully | 8.1 mi | 83.68 acres |
| Post Lake | Sully | 10 mi | 35.35 acres |
| Marshy Lake | Hyde | 14 mi | 95.06 acres |
| Spring Lake | Hyde | 14 mi | 248.66 acres |
| Chapelle Lake | Hyde | 15 mi | 39.54 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Walker Lake
How Big Is Walker Lake?
Walker Lake covers 59.59 acres in Sully County, South Dakota.
What Is the Largest Lake in Sully County?
Stone Lake is the largest lake in Sully County, at 1,023.51 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 144112285). Verified October 30, 2026.