| Frentress Lake | |
|---|---|
| Location | Jo Daviess County |
| Coordinates | 42°27′48″N90°36′39″W / 42.4633379°N 90.6109613°W |
| Primary inflows | Mississippi River |
| Primary outflows | Mississippi River |
| Basin countries | United States |
| Max. length | 1.5 mi (2.4 km) |
| Max. width | 0.25 mi (0.40 km) |
| Surface area | 160 acres (65 ha) |
| Average depth | 5–20 ft (1.5–6.1 m) |
| Max. depth | 46 ft (14 m) |
| Surface elevation | 591 ft (180 m) |
Frentress Lake is a backwater lake located on the eastern side of the Mississippi River in Jo Daviess County in northern Illinois, to the southeast of East Dubuque. [1] Homes on Frentress Lake experienced flooding in April 2011. [2]