Lakes / Iowa / Polk County / Brenton Slough
Brenton Slough, Iowa
62 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Iowa
41.73 degrees N, 93.80 degrees W - Polk 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 Brenton Slough Stacks Up
- Larger than 32% of the 220 lakes counted in Iowa.
- About 13 miles from Des Moines, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Saylorville Lake | Polk | 4.2 mi | 5,428 acres |
| Big Creek Lake | Polk | 6.9 mi | 856 acres |
| Grays Lake | Polk | 14 mi | 96 acres |
| Dale Maffit Reservoir | Dallas | 15 mi | 187 acres |
| Lake Colechester | Warren | 17 mi | 153 acres |
| Lake Easter | Polk | 18 mi | 177 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Brenton Slough
How Big Is Brenton Slough?
Brenton Slough covers 62 acres in Polk County, Iowa.
What Is the Largest Lake in Polk County?
Saylorville Lake is the largest lake in Polk County, at 5,428 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 137028989). Verified October 30, 2026.