Daviess County Lake Quality
Wisconsin, 2 lakes, average grade D (Poor)
Daviess County has 2 graded lakes — a thin enough sample that one or two stressed lakes can move the county average noticeably. Use the per-lake pages below for what actually matters. On average, Daviess County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Jamesport City Lake (D) is the cleanest in the county.
Quick Answers for Daviess County
Planning a trip? Check special fishing regulations for Jamesport City Lake, whether the fish are safe to eat, and the best times to fish — or browse the full Wisconsin regulations index.
All Lakes in Daviess County
| Rank | Lake | Grade | Clarity | Max Depth | Phosphorus |
|---|---|---|---|---|---|
| 1 | Jamesport City Lake | D | - | - | 147.7 µg/L |
| 2 | Jamesport Community Lake | F | 0.9 ft | - | 160.3 µg/L |
Source: EPA National Aquatic Resource Surveys, 2026.