Lakes / South Dakota / Sanborn County / Letcher Lake
Letcher Lake, South Dakota
27.18 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
43.90 degrees N, 98.14 degrees W - Sanborn 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 Letcher Lake Stacks Up
- Larger than 2% of the 533 lakes counted in South Dakota.
- About 74 miles from Sioux Falls, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Long Lake | Sanborn | 7.2 mi | 224.7 acres |
| Grass Lake | Jerauld | 10 mi | 64.74 acres |
| Twin Lakes | Sanborn | 11 mi | 139.86 acres |
| Lake Mitchell | Davison | 11 mi | 669.16 acres |
| McCoy Lake | Sanborn | 12 mi | 61.28 acres |
| School Section Lakes | Sanborn | 14 mi | 182.28 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Letcher Lake
How Big Is Letcher Lake?
Letcher Lake covers 27.18 acres in Sanborn County, South Dakota.
What Is the Largest Lake in Sanborn County?
Long Lake is the largest lake in Sanborn County, at 224.7 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 125117971). Verified October 30, 2026.