Eutrophic Lakes in Vermont
8 eutrophic lakes in Vermont. High nutrients, frequent algae, reduced clarity.
A eutrophic lake is a productive ecosystem with the trade-offs that come with productivity: more food at the base of the food web, more clarity reduction by mid-summer, more dissolved-oxygen variability near the bottom. 8 Vermont lakes register as eutrophic. Only 0% are deep — eutrophy correlates with shallowness, agricultural watersheds, and the kind of nutrient-input history that takes decades to shift.
Eutrophic lakes typically grade C or D on our A–F scale. The same nutrient richness that defines the trophic class drives the lower grade.
| # | Lake | County | Grade | Clarity | Depth | TSI |
|---|---|---|---|---|---|---|
| 1 | Long Pond | Orleans | C | 14.2 ft | - | 45 |
| 2 | Lake Iroquois | Chittenden | C | 11.8 ft | - | 47 |
| 3 | Big Mud Pond | Rutland | C | 4.3 ft | - | 51 |
| 4 | Bourn Pond | Bennington | C | 5.6 ft | - | 51 |
| 5 | Bald Hill Pond | Orleans | C | 13.1 ft | - | 43 |
| 6 | Missisquoi Bay Lake | Franklin | D | 5.6 ft | - | 55 |
| 7 | Lake Carmi | Franklin | D | 4.9 ft | - | 57 |
| 8 | St. Albans Bay Lake | Franklin | D | 6.6 ft | - | 53 |
All eutrophic lakes →Minnesota version →Wisconsin version →Illinois version →Michigan version →Iowa version →Ohio version →Pennsylvania version →New York version →Missouri version →Indiana version →North Dakota version →South Dakota version →Florida version →Colorado version →North Carolina version →Texas version →Oregon version →Arkansas version →Oklahoma version →Kansas version →Nebraska version →Nevada version →Arizona version →Idaho version →Montana version →New Mexico version →Tennessee version →Alabama version →Virginia version →Kentucky version →Utah version →Washington version →Wyoming version →Georgia version →Massachusetts version →Ontario version →Québec version →Nova Scotia version →British Columbia version →Newfoundland and Labrador version →All Vermont lakes →
Source: EPA National Aquatic Resource Surveys, 2026.