Eutrophic Lakes in New York

6 eutrophic lakes in New York. High nutrients, frequent algae, reduced clarity.

Eutrophic lakes — TSI 50 to 70 — are nutrient-rich and productive, with persistent summer algal communities that drive visible reductions in clarity. These conditions are not failures; they reflect a lake doing what nutrient-loaded waters do. 6 New York 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 the LakeGrade rubric. The same nutrient richness that defines the trophic class drives the lower grade.

#	Lake	County	Grade	Clarity	Depth	TSI
1	Hope Pond	Franklin	C	-	-	44
2	Little Hope Pond	Franklin	C	-	-	49
3	Irondequoit Bay Lake	Monroe	D	7.1 ft	-	51
4	Southern Section Lake	Washington	D	2 ft	-	62
5	Southern Section Lake	Essex	D	2.6 ft	-	57
6	Little Echo Pond	Franklin	D	-	-	53

All eutrophic lakes →Minnesota version →Wisconsin version →Illinois version →Michigan version →Iowa version →Ohio version →Pennsylvania version →Missouri version →Indiana version →North Dakota version →South Dakota version →Florida version →Colorado version →North Carolina version →Vermont 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 →All New York lakes →

Source: EPA National Aquatic Resource Surveys, 2026.