Lakes / Iowa / Pocahontas County / Sunken Island Lake
Sunken Island Lake, Iowa
135 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Iowa
42.63 degrees N, 94.90 degrees W - Pocahontas 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 Sunken Island Lake Stacks Up
- Larger than 63% of the 220 lakes counted in Iowa.
- About 54 miles from Okoboji, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Clear Lake | Pocahontas | 6.9 mi | 163 acres |
| Storm Lake | Buena Vista | 16 mi | 3,108 acres |
| North Twin Lake | Calhoun | 17 mi | 452 acres |
| South Twin Lake | Calhoun | 17 mi | 465 acres |
| Pickerel Lake | Buena Vista | 19 mi | 165 acres |
| Lizard Lake | Pocahontas | 21 mi | 274 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Sunken Island Lake
How Big Is Sunken Island Lake?
Sunken Island Lake covers 135 acres in Pocahontas County, Iowa.
What Is the Largest Lake in Pocahontas County?
Lizard Lake is the largest lake in Pocahontas County, at 274 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 137043909). Verified October 30, 2026.