Randolph County Lake Quality
Alabama, 8 lakes, average grade B (Good)
Randolph County holds 8 monitored lakes. With a sample that small the county-level summary describes those specific waters, not necessarily every water body in the county. 3 of those lakes carry an A–F grade. The county-level summary describes that subset, not every water body listed. With an average grade of B, Randolph County sits comfortably above the Alabama median.
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 Mare Lake (A); the most-stressed is Rlhr Lake (C).
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Quick Answers for Randolph County
Planning a trip? Check special fishing regulations for Mare Lake — or check the official Alabama fishing regulations.
All Lakes in Randolph County
8 lakes · 3 graded, 5 not rated3 graded lakes · 5 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | AMare LakeRandolph | A | 11.5 ft | 12 µg/L | 5.3 µg/L | No recent samples | Not recorded |
| 2 | CRlhr LakeRandolph | C | 5 ft | 25 µg/L | 10.8 µg/L | No recent samples | ✓ Public |
| 3 | CRlhr LakeRandolph | C | 8.5 ft | 10 µg/L | 6.7 µg/L | No recent samples | ✓ Public |
| NRLake WedoweeRandolph | NR | 5.9 ft | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRR L Harris ReservoirRandolph | NR | No recent samples | No recent samples | No recent samples | No recent samples | ✓ Public | |
| NRNelson LakeRandolph | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRCrystal LakeRandolph | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRLake LouiseRandolph | 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 Alabama
See how Randolph 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.