
Stewart County Lake Quality
Tennessee, 11 lakes, average grade D (Nutrient-rich)
Stewart County holds 11 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, Stewart 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. Cumberland River Lake (D) is the cleanest in the county.
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Quick Answers for Stewart County
Planning a trip? Check special fishing regulations for Cumberland River Lake — or check the official Tennessee fishing regulations.
All Lakes in Stewart County
11 lakes · 1 graded, 10 not rated1 graded lake · 10 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | DCumberland River LakeStewart | D | No recent samples | 82.6 µg/L | 12.5 µg/L | No recent samples | ✓ Public |
| NRKentucky LakeStewart | NR | No recent samples | 20.5 µg/L | No recent samples | No recent samples | ✓ Public | |
| NRPool TwoStewart | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRBards LakeStewart | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRLake BarkleyStewart | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRCross Creek ReservoirStewart | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRLake BarkleyStewart | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLake BarkleyStewart | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRPool FiveStewart | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRLake BarkleyStewart | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRLake BarkleyStewart | 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 Tennessee
See how Stewart 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.