Pike County Lake Quality
Missouri, 5 lakes, average grade A (Excellent)
Pike County has 5 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's average grade is A — among the cleanest in Missouri. 1 lakes pull an A on their own, and almost none fall into the D or F brackets.
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 Bowling Green Lake (A); the most-stressed is Bowling Green Lake (A).
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Quick Answers for Pike County
Planning a trip? Check special fishing regulations for Bowling Green Lake — or check the official Missouri fishing regulations.
All Lakes in Pike County
5 lakes · 1 graded, 4 not rated1 graded lake · 4 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | ABowling Green LakePike | A | 5.5 ft | 24.6 µg/L | 5.1 µg/L | No recent samples | ✓ Public |
| NRClithero LakePike | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRHorseshoe LakePike | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRFlag PondPike | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRWeldon H. 'Pete' Steiner ReservoirPike | 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.
Lake Match
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Other Counties in Missouri
See how Pike 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.