Lakes / South Dakota / Clark County / Fordham Dam
Fordham Dam, South Dakota
82.78 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
44.77 degrees N, 97.93 degrees W - Clark 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 Fordham Dam Stacks Up
- Larger than 33% of the 533 lakes counted in South Dakota.
- About 41 miles from Watertown, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Logan Dam | Clark | 5.0 mi | 38.8 acres |
| Antelope Lake | Clark | 11 mi | 270.83 acres |
| Mud Lake | Clark | 11 mi | 77.34 acres |
| Staum Dam | Beadle | 12 mi | 39.78 acres |
| Dry Lake Number Two | Clark | 15 mi | 6,441.66 acres |
| Piper Lake | Beadle | 16 mi | 81.79 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Fordham Dam
How Big Is Fordham Dam?
Fordham Dam covers 82.78 acres in Clark County, South Dakota.
What Is the Largest Lake in Clark County?
Dry Lake Number Two is the largest lake in Clark County, at 6,441.66 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 145669563). Verified October 30, 2026.