Lakes / South Dakota / Sanborn County / McCoy Lake
McCoy Lake, South Dakota
61.28 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
44.03 degrees N, 98.31 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 McCoy Lake Stacks Up
- Larger than 22% of the 533 lakes counted in South Dakota.
- About 84 miles from Watertown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Twin Lakes | Sanborn | 5.0 mi | 139.86 acres |
| Grass Lake | Jerauld | 5.7 mi | 64.74 acres |
| Long Lake | Sanborn | 6.1 mi | 224.7 acres |
| Letcher Lake | Sanborn | 12 mi | 27.18 acres |
| Bakers Lake | Jerauld | 15 mi | 38.55 acres |
| Deans Lake | Jerauld | 15 mi | 26.29 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About McCoy Lake
How Big Is McCoy Lake?
McCoy Lake covers 61.28 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 125126727). Verified October 30, 2026.