Tuscaloosa County Lake Quality
Alabama, 9 lakes, average grade B (Good)
Tuscaloosa County has 9 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-wide average lands at B — solid water quality with most lakes carrying clear summer transparency and low-to-moderate phosphorus.
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. Tust Lake (A) is the cleanest in the county.
Quick Answers for Tuscaloosa County
Planning a trip? Check special fishing regulations for Tust Lake — or check the official Alabama fishing regulations.
All Lakes in Tuscaloosa County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Tust Lake | A | 7.7 ft | 12 µg/L |
| 2 | Nla Lake | B | 6.6 ft | 24.7 µg/L |
| 3 | Ncht Lake | B | 5.3 ft | 16 µg/L |
| 4 | Olit Lake | B | 4.3 ft | 19 µg/L |
| 5 | Holt Lake | B | 4.7 ft | 21 µg/L |
| 6 | Warg Lake | C | 2.4 ft | 25 µg/L |
| 7 | Nla Lake | C | 3.4 ft | 49.5 µg/L |
| 8 | Holt Lake | C | 4.5 ft | 31 µg/L |
| 9 | Holt Lake | C | 4.5 ft | 27 µg/L |
Other Counties in Alabama
See how Tuscaloosa County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 34 states.
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Source: EPA National Aquatic Resource Surveys, 2026.