Pushmataha County Lake Quality
Oklahoma, 5 lakes, average grade D (Nutrient-rich)
Pushmataha County holds 5 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 2 of those lakes carry an A–F grade. The county-level summary describes that subset, not every water body listed. On average, Pushmataha 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. Lake Nahni Waiya Tuskahomma (D) is the cleanest in the county.
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Quick Answers for Pushmataha County
Planning a trip? Check special fishing regulations for Lake Nahni Waiya Tuskahomma — or check the official Oklahoma fishing regulations.
All Lakes in Pushmataha County
5 lakes · 2 graded, 3 not rated2 graded lakes · 3 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | DLake Nahni Waiya TuskahommaPushmataha | D | No recent samples | 250 µg/L | No recent samples | No recent samples | ✓ Public |
| 2 | DLake Sardis ClaytonPushmataha | D | No recent samples | 260 µg/L | No recent samples | No recent samples | ✓ Public |
| NRSardis LakePushmataha | NR | 1.5 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRLake Ozzie CobbPushmataha | NR | 2 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRClayton LakePushmataha | NR | 5.2 ft | 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 Pushmataha 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.