Lamoille County Lake Quality
Vermont, 10 lakes, average grade B (Good)
Lamoille County has 10 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. South Pond (A) is the cleanest in the county.
Quick Answers for Lamoille County
Planning a trip? Check special fishing regulations for South Pond — or check the official Vermont fishing regulations.
All Lakes in Lamoille County
| Rank | Lake | Grade | Clarity | Phosphorus |
|---|---|---|---|---|
| 1 | South Pond | A | 15.4 ft | 8.2 µg/L |
| 2 | Ritterbush Pond | A | 16.7 ft | 8.7 µg/L |
| 3 | Lake Eden | A | 12.8 ft | 12.2 µg/L |
| 4 | Green River Reservoir | A | 13.1 ft | 7.4 µg/L |
| 5 | Lake Elmore | B | 9.8 ft | 15.9 µg/L |
| 6 | Lake Mansfield | B | 6.9 ft | 12.1 µg/L |
| 7 | Hardwood Pond | B | 6.9 ft | 16.1 µg/L |
| 8 | Schofield Pond | B | 9 ft | 12.6 µg/L |
| 9 | Wolcott Pond | C | 7.2 ft | - |
| 10 | Zack Woods Pond | C | 9.8 ft | - |
Other Counties in Vermont
See how Lamoille County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all 17 states.
Where to stay near Lamoille County
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Source: EPA National Aquatic Resource Surveys, 2026.