Lakes / South Dakota / Moody County / Poison Lake
Poison Lake, South Dakota
69.44 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
43.96 degrees N, 96.84 degrees W - Moody 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 Poison Lake Stacks Up
- Larger than 26% of the 533 lakes counted in South Dakota.
- About 29 miles from Sioux Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Mud Lake | Moody | 3.7 mi | 89.7 acres |
| Brant Lake | Lake | 6.1 mi | 1,033.39 acres |
| Anderson Slough | Moody | 6.4 mi | 84.26 acres |
| Round Lake | Lake | 7.3 mi | 179.4 acres |
| Spring Lake | Lake | 7.6 mi | 55.6 acres |
| Buffalo Slough | Lake | 7.6 mi | 246.86 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Poison Lake
How Big Is Poison Lake?
Poison Lake covers 69.44 acres in Moody County, South Dakota.
What Is the Largest Lake in Moody County?
Mud Lake is the largest lake in Moody County, at 89.7 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 130994641). Verified October 30, 2026.