Lakes / South Dakota / Fall River County / Cold Brook Reservoir
Cold Brook Reservoir, South Dakota
32.62 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - South Dakota
43.46 degrees N, 103.49 degrees W - Fall River 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 Cold Brook Reservoir Stacks Up
- Larger than 6% of the 533 lakes counted in South Dakota.
- About 45 miles from Rapid City, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Angostura Reservoir | Fall River | 11 mi | 4,752.71 acres |
| Stockade Lake | Custer | 22 mi | 125.28 acres |
| Limestone Butte Reservoir | Fall River | 26 mi | 92.91 acres |
| Sheridan Lake | Pennington | 36 mi | 382.77 acres |
| Deerfield Lake | Pennington | 42 mi | 327.91 acres |
| Pactola Reservoir | Pennington | 43 mi | 840.65 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Cold Brook Reservoir
How Big Is Cold Brook Reservoir?
Cold Brook Reservoir covers 32.62 acres in Fall River County, South Dakota.
What Is the Largest Lake in Fall River County?
Angostura Reservoir is the largest lake in Fall River County, at 4,752.71 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 124555372). Verified October 30, 2026.