Lakes / Missouri / Harrison County / Rock House Lake
Rock House Lake, Missouri
59.27 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Missouri
40.39 degrees N, 93.89 degrees W - Harrison 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 House Lake Stacks Up
- Larger than 54% of the 352 lakes counted in Missouri.
- About 96 miles from Kansas City, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| East Fork Big Creek Watershed Lake A-4 | Harrison | 7.3 mi | 31.1 acres |
| New City Lake | Harrison | 8.7 mi | 76.03 acres |
| Lake Paho | Mercer | 12 mi | 239.52 acres |
| Ballast Pit Lake | Mercer | 16 mi | 40.53 acres |
| Lake Marie | Mercer | 19 mi | 48.43 acres |
| Twin Lake | Mercer | 20 mi | 51.22 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Rock House Lake
How Big Is Rock House Lake?
Rock House Lake covers 59.27 acres in Harrison County, Missouri.
What Is the Largest Lake in Harrison County?
New City Lake is the largest lake in Harrison County, at 76.03 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 148674660). Verified October 30, 2026.