Lakes / Missouri / Johnson County / Rock Island Lake
Rock Island Lake, Missouri
32.87 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Missouri
38.66 degrees N, 94.02 degrees W - Johnson 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 Rock Island Lake Stacks Up
- Larger than 22% of the 352 lakes counted in Missouri.
- About 43 miles from Kansas City, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Holden City Lake | Johnson | 7.0 mi | 285.16 acres |
| Echo Lake | Johnson | 12 mi | 25.95 acres |
| Loch Leonard | Cass | 17 mi | 27.34 acres |
| City Lake | Cass | 17 mi | 29.65 acres |
| North Lake | Cass | 18 mi | 37.81 acres |
| Harrisonville City Lake | Cass | 19 mi | 417.03 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Rock Island Lake
How Big Is Rock Island Lake?
Rock Island Lake covers 32.87 acres in Johnson County, Missouri.
What Is the Largest Lake in Johnson County?
Holden City Lake is the largest lake in Johnson County, at 285.16 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 107421643). Verified October 30, 2026.