Miller County Lake Quality
Missouri, 8 lakes, average grade C (Fair)
Miller County has 8 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. The county average is C — the middle of the rubric, with one or two lakes pulling the average up or down depending on year.
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 Loto Upstream of Dam Lake (B); the most-stressed is Loto Lake (C).
Quick Answers for Miller County
Planning a trip? Check special fishing regulations for Loto Upstream of Dam Lake — or check the official Missouri fishing regulations.
All Lakes in Miller County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Loto Upstream of Dam Lake | B | 6.7 ft | 28.1 µg/L |
| 2 | Loto Lake | B | 6.9 ft | 10 µg/L |
| 3 | Loto Lake | C | 5.6 ft | 29.5 µg/L |
Other Counties in Missouri
See how Miller 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 Miller County
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Source: EPA National Aquatic Resource Surveys, 2026.