Caswell County Lake Quality
North Carolina, 4 lakes, average grade D (Nutrient-rich)
Caswell County holds 4 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. The county-wide average grade is D — water quality issues are persistent across most of the monitored basins. 1 lakes fall into the F bracket outright.
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 Farmer Lake (D); the most-stressed is Lake Roxboro (F).
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Quick Answers for Caswell County
Planning a trip? Check special fishing regulations for Farmer Lake — or check the official North Carolina fishing regulations.
All Lakes in Caswell County
4 lakes · 2 graded, 2 not rated2 graded lakes · 2 not rated, hidden
| # | Lake | Grade | Clarity | Phosphorus | Algae | Trophic | Access |
|---|---|---|---|---|---|---|---|
| 1 | DFarmer LakeCaswell | D | 2.1 ft | 30 µg/L | 27 µg/L | No recent samples | ✓ Public |
| 2 | FLake RoxboroCaswell | F | 3 ft | 30 µg/L | 33 µg/L | No recent samples | Not recorded |
| NRWildwood LakeCaswell | NR | No recent samples | No recent samples | No recent samples | No recent samples | Not recorded | |
| NRHyco LakeCaswell | 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 North Carolina
See how Caswell 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 and Québec), and 38 other country hubs..
Source: EPA National Aquatic Resource Surveys, 2026.