Lakes / South Dakota / Brown County / Elm Lake
Elm Lake, Brown County, South Dakota
1,225.4 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.89 degrees N, 98.70 degrees W - Brown 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 Elm Lake Stacks Up
- Larger than 91% of the 533 lakes counted in South Dakota.
- About 31 miles from Aberdeen, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Willow Creek Lake | Brown | 13 mi | 255.51 acres |
| Rath Lake | McPherson | 19 mi | 179.89 acres |
| Crompton Lake | McPherson | 20 mi | 56.83 acres |
| Richmond Lake | Brown | 23 mi | 810.01 acres |
| Columbia Road Reservoir | Brown | 23 mi | 7,074.89 acres |
| Alkali Lake | McPherson | 24 mi | 121.58 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Elm Lake
How Big Is Elm Lake?
Elm Lake covers 1,225.4 acres in Brown County, South Dakota.
What Is the Largest Lake in Brown County?
Columbia Road Reservoir is the largest lake in Brown County, at 7,074.89 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 147911290). Verified October 30, 2026.