Lakes / South Dakota / Lake County / Lake Henry
Lake Henry, Lake County, South Dakota
517.47 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
43.92 degrees N, 97.32 degrees W - Lake 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 Lake Henry Stacks Up
- Larger than 81% of the 533 lakes counted in South Dakota.
- About 39 miles from Sioux Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lake George | Lake | 1.6 mi | 267.71 acres |
| Lake Winfred | Lake | 6.0 mi | 25.45 acres |
| Pedley Lake | Miner | 7.9 mi | 55.62 acres |
| Wombacker Slough | Miner | 8.7 mi | 67.21 acres |
| Silver Lake | Miner | 8.8 mi | 87.23 acres |
| Lake Herman | Lake | 8.9 mi | 1,283.22 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lake Henry
How Big Is Lake Henry?
Lake Henry covers 517.47 acres in Lake County, South Dakota.
What Is the Largest Lake in Lake County?
Lake Madison is the largest lake in Lake County, at 2,763.52 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 123217633). Verified October 30, 2026.