Daviess County Lake Quality
Missouri, 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 — or check the official Missouri fishing regulations.
All Lakes in Daviess County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Jamesport City Lake | D | - | 147.7 µg/L |
| 2 | Jamesport Community Lake | F | 0.9 ft | 160.3 µg/L |
Other Counties in Missouri
See how Daviess County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 15 states.
Where to stay near Daviess County
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Source: EPA National Aquatic Resource Surveys, 2026.