Lakes / South Dakota / Clark County / Twin Sloughs
Twin Sloughs, South Dakota
57.08 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.12 degrees N, 97.81 degrees W - Clark 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 Twin Sloughs Stacks Up
- Larger than 20% of the 533 lakes counted in South Dakota.
- About 37 miles from Watertown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lone Tree Lake | Clark | 3.3 mi | 67.46 acres |
| Cottonwood Lake | Clark | 5.6 mi | 462.39 acres |
| Round Lake | Clark | 6.0 mi | 97.85 acres |
| Sweetwater Lake | Day | 7.1 mi | 211.52 acres |
| Reid Lake | Clark | 7.4 mi | 1,045.61 acres |
| Madian Lake | Clark | 8.6 mi | 62.27 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Twin Sloughs
How Big Is Twin Sloughs?
Twin Sloughs covers 57.08 acres in Clark County, South Dakota.
What Is the Largest Lake in Clark County?
Dry Lake Number Two is the largest lake in Clark County, at 6,441.66 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 145095352). Verified October 30, 2026.