Lakes / Missouri / Ralls County / Mark Twain Lake
Mark Twain Lake, Missouri
18,362.33 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Missouri
39.52 degrees N, 91.71 degrees W - Ralls 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 Mark Twain Lake Stacks Up
- Ranks #5 for surface area among the Missouri lakes counted so far - 18,362.33 acres.
- About 51 miles from Columbia, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Monroe Lake B | Monroe | 7.2 mi | 59.88 acres |
| Hunnewell Lake | Shelby | 16 mi | 222.64 acres |
| Weldon H. 'Pete' Steiner Reservoir | Pike | 19 mi | 27.52 acres |
| Vandalia Lake | Audrain | 22 mi | 35.09 acres |
| Shelbina Lake | Shelby | 23 mi | 45.71 acres |
| Heather Bay | Marion | 23 mi | 29.16 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 120032180). Verified October 30, 2026.