Lakes / Missouri / New Madrid County / Riley Lake
Riley Lake, Missouri
33.47 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Missouri
36.51 degrees N, 89.46 degrees W - New Madrid 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 Riley Lake Stacks Up
- Larger than 24% of the 352 lakes counted in Missouri.
- About 152 miles from St. Louis, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Stonewall Lake | New Madrid | 2.2 mi | 30.64 acres |
| Watson Lake | New Madrid | 4.4 mi | 40.43 acres |
| Hubbard Lake | New Madrid | 5.2 mi | 66.91 acres |
| Ransburgh Hole | New Madrid | 6.2 mi | 26.36 acres |
| Point Pleasant Chute | New Madrid | 6.9 mi | 312.51 acres |
| Chute of Island Number 7 | Mississippi | 12 mi | 58.35 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Riley Lake
How Big Is Riley Lake?
Riley Lake covers 33.47 acres in New Madrid County, Missouri.
What Is the Largest Lake in New Madrid County?
Point Pleasant Chute is the largest lake in New Madrid County, at 312.51 acres.
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 141196723). Verified October 30, 2026.