Muskogee County Lake Quality
Oklahoma, 6 lakes, average grade D (Nutrient-rich)
Muskogee County holds 6 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 1 of those lake carry an A–F grade. The county-level summary describes that subset, not every water body listed. On average, Muskogee County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.
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 Greenleaf Lake (D); the most-stressed is Greenleaf Lake (D).
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Quick Answers for Muskogee County
Planning a trip? Check special fishing regulations for Greenleaf Lake — or check the official Oklahoma fishing regulations.
All Lakes in Muskogee County
6 lakes · 1 graded, 5 not rated1 graded lake · 5 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | DGreenleaf LakeMuskogee | D | 2.5 ft | 49.5 µg/L | No recent samples | No recent samples | ✓ Public |
| NRWebbers Falls ReservoirMuskogee | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRHorseshoe LakeMuskogee | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRRoss LakeMuskogee | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRBoynton LakeMuskogee | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRWebbers Falls ReservoirMuskogee | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public |
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 Oklahoma
See how Muskogee 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.