Daviess County Lake Quality
Missouri, 3 lakes, average grade F (Algae-prone)
Daviess County has 3 monitored 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. 1 of those lake carry an A–F grade. The county-level summary describes that subset, not every water body listed. The county average is F — the most-stressed bracket in our rubric. Most monitored lakes here show persistent nutrient loading and algal pressure.
The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Jamesport Community Lake (F); the most-stressed is Jamesport Community Lake (F).
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Quick Answers for Daviess County
Planning a trip? Check special fishing regulations for Jamesport Community Lake — or check the official Missouri fishing regulations.
All Lakes in Daviess County
3 lakes · 1 graded, 2 not rated1 graded lake · 2 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | FJamesport Community LakeDaviess | F | 0.9 ft | 160.3 µg/L | 111.4 µg/L | No recent samples | ✓ Public |
| NRJamesport City LakeDaviess | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLake VikingDaviess | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded |
NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.
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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 United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..
Source: EPA National Aquatic Resource Surveys, 2026.