Lakes / South Dakota / Marshall County / Sarah Lake
Sarah Lake, South Dakota
77.59 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
45.69 degrees N, 97.29 degrees W - Marshall 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 Sarah Lake Stacks Up
- Larger than 31% of the 533 lakes counted in South Dakota.
- About 55 miles from Watertown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Pete W Slough | Marshall | 0.7 mi | 32.37 acres |
| Meyer Slough | Marshall | 1.4 mi | 28.66 acres |
| North Red Iron Lake | Marshall | 1.6 mi | 175.2 acres |
| South Red Iron Lake | Marshall | 1.7 mi | 623.94 acres |
| Wolf Lake | Marshall | 1.9 mi | 37.56 acres |
| Island Lake | Marshall | 2.0 mi | 145.55 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Sarah Lake
How Big Is Sarah Lake?
Sarah Lake covers 77.59 acres in Marshall County, South Dakota.
What Is the Largest Lake in Marshall County?
Buffalo Lakes is the largest lake in Marshall County, at 1,986.48 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 145087298). Verified October 30, 2026.