Lake Carmi is a productive, nutrient-rich eutrophic 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, Lake Carmi ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, Vermont DNR, last sampled 2025-08-25. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swim with caution, moderate algae may be present
Water Quality Grade: C, Fair
Murky, only visible to about 4.9 ft. Phosphorus level: 22.4 µg/L. Chlorophyll-a: 20.2 µg/L. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.9 ft | D |
| Phosphorus | 22.4 µg/L | B |
| Chlorophyll-a (Algae) | 20.2 µg/L | D |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Lake Carmi
Location
County Ranking
Ranked #9 of 9 lakes in Franklin County
Cleaner Lakes Within 30 Miles
Lake Carmi holds Grade C. 5 nearby lakes hold higher grades.
- AFairfield PondFranklin County · 10.2 mi · Two grade letters higher (C → A)
- AKings Hill PondFranklin County · 16.8 mi · Two grade letters higher (C → A)
- AUnnamed Pond Referred To by Dec As South RichfordFranklin County · 11.1 mi · Two grade letters higher (C → A)
- AMetcalf PondFranklin County · 16.8 mi · Two grade letters higher (C → A)
- BNortheast Arm LakeFranklin County · 15.7 mi · Higher grade (C → B)
Nearby Lakes in Franklin County
Explore Lake Carmi across LakeGrade
More Vermont Lake Rankings
Other Grade C Lakes in Vermont
Eutrophic 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: 2025-08-25
Monitoring stations: 3