Lakes / Missouri / Putnam County / Unionville Reservoir
Unionville Reservoir, Missouri
73.88 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Missouri
40.49 degrees N, 93.02 degrees W - Putnam 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 Unionville Reservoir Stacks Up
- Larger than 62% of the 352 lakes counted in Missouri.
- About 113 miles from Columbia, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Lake Thunderhead | Putnam | 2.5 mi | 859.93 acres |
| New Milan Reservoir | Sullivan | 19 mi | 198.59 acres |
| Number 41 Lake | Sullivan | 21 mi | 44.89 acres |
| Lake Elsea | Adair | 21 mi | 33.85 acres |
| Scobee Lake | Adair | 21 mi | 80.31 acres |
| Shatto Lake | Sullivan | 22 mi | 31.63 acres |
Straight-line distance between lake centers.
Facts and Figures
Largest Lakes in Missouri
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Lake of the Ozarks | Camden | 51,171.75 acres | - |
| 2 | Harry S Truman Reservoir | Benton | 49,365.93 acres | - |
| 3 | Table Rock Lake | Stone | 41,777.86 acres | - |
| 4 | Stockton Lake | Cedar | 24,962.34 acres | - |
| 5 | Mark Twain Lake | Ralls | 18,362.33 acres | - |
All 352 Missouri lakes ranked by surface area
Sources: USGS National Hydrography Dataset (The National Map) lake data (ID 147260619). Verified October 30, 2026.