Lakes / South Dakota / McCook County / Tuschen Slough
Tuschen Slough, South Dakota
104.03 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
43.70 degrees N, 97.47 degrees W - McCook 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 Tuschen Slough Stacks Up
- Larger than 43% of the 533 lakes counted in South Dakota.
- About 38 miles from Sioux Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Schimmel Slough | McCook | 1.2 mi | 94.39 acres |
| Gross Lake | McCook | 2.7 mi | 79.57 acres |
| Macke Lake | McCook | 2.9 mi | 38.55 acres |
| Lions Lake | McCook | 5.0 mi | 37.56 acres |
| Lake Eli | Hanson | 7.6 mi | 102.05 acres |
| Welker Lake | Hanson | 11 mi | 57.58 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Tuschen Slough
How Big Is Tuschen Slough?
Tuschen Slough covers 104.03 acres in McCook County, South Dakota.
What Is the Largest Lake in McCook County?
East Vermillion Lake is the largest lake in McCook County, at 569.27 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 125122118). Verified October 30, 2026.