St. Albans Bay Lake is a mesotrophic lake in Franklin County, Vermont. Water quality is graded C based on 3 sampling years through 2025. Compared to the 8 other monitored lakes in Franklin County, St. Albans Bay Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Vermont DNR, last sampled 2025-07-22. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 6.6 ft. Phosphorus level: 17.3 µg/L. Chlorophyll-a: 10.3 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.6 ft | D |
| Phosphorus | 17.3 µg/L | A |
| Chlorophyll-a (Algae) | 10.3 µg/L | C |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near St. Albans Bay Lake
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Fishing St. Albans Bay Lake
Location
County Ranking
Ranked #6 of 9 lakes in Franklin County
Cleaner Lakes Within 30 Miles
St. Albans Bay Lake holds Grade C. 5 nearby lakes hold higher grades.
- AIsle la Motte LakeGrand Isle County · 8.4 mi · Two grade letters higher (C → A)
- AFairfield PondFranklin County · 9.5 mi · Two grade letters higher (C → A)
- AMetcalf PondFranklin County · 14.2 mi · Two grade letters higher (C → A)
- AMalletts Bay LakeChittenden County · 15.2 mi · Two grade letters higher (C → A)
- BNortheast Arm LakeGrand Isle County · 7.6 mi · Higher grade (C → B)
Nearby Lakes in Franklin County
Explore St. Albans Bay Lake across LakeGrade
More Vermont Lake Rankings
Other Grade C Lakes in Vermont
Mesotrophic Lakes in Vermont
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2025-07-22
Monitoring stations: 1