Granville County Lake Quality
North Carolina, 3 lakes, average grade D (Poor)
Granville County has 3 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. On average, Granville 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 Butner (B) is the cleanest in the county.
Quick Answers for Granville County
Planning a trip? Check special fishing regulations for Lake Butner — or check the official North Carolina fishing regulations.
All Lakes in Granville County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | Lake Butner | B | - | 20 µg/L |
| 2 | Lake Devin | C | - | 40 µg/L |
| 3 | Lake Rogers | F | - | 115 µg/L |
Other Counties in North Carolina
See how Granville County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 12 states.
Where to stay near Granville County
Top-rated places to stay near Granville County
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Source: EPA National Aquatic Resource Surveys, 2026.