Lakes / Iowa / Emmet County / Twelvemile Lake
Twelvemile Lake, Iowa
199 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Iowa
43.29 degrees N, 94.88 degrees W - Emmet 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 Twelvemile Lake Stacks Up
- Larger than 71% of the 220 lakes counted in Iowa.
- About 15 miles from Okoboji, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Cheever Lake | Emmet | 5.7 mi | 113 acres |
| Bur Oak Lake | Emmet | 6.4 mi | 92 acres |
| Mud Lake | Clay | 7.3 mi | 283 acres |
| Fourmile Lake | Emmet | 7.3 mi | 85 acres |
| Trumbull Lake | Clay | 7.7 mi | 1,061 acres |
| Dan Green Slough | Clay | 8.0 mi | 278 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Twelvemile Lake
How Big Is Twelvemile Lake?
Twelvemile Lake covers 199 acres in Emmet County, Iowa.
What Is the Largest Lake in Emmet County?
Swan Lake is the largest lake in Emmet County, at 766 acres.
Largest Lakes in Iowa
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Rathbun Lake | Appanoose | 13,869 acres | - |
| 2 | Lake Red Rock | Marion | 8,619 acres | - |
| 3 | Spirit Lake | Dickinson | 5,463 acres | - |
| 4 | Saylorville Lake | Polk | 5,428 acres | - |
| 5 | Clear Lake | Cerro Gordo | 3,632 acres | - |
All 220 Iowa lakes ranked by surface area
Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 132544345). Verified October 30, 2026.