Mesotrophic Lakes in New York

12 mesotrophic lakes in New York. Moderate nutrients, good water quality.

Mesotrophic lakes are the productive middle of the trophic scale — TSI between 40 and 50. Clear enough to be inviting, productive enough to support a strong fishery, with moderate phosphorus and a modest algal community that does not dominate the optical signal. 12 lakes in New York sit in the mesotrophic band. About 0% are deep (50+ ft); the rest are shallower basins where watershed management keeps nutrients from pushing the system into eutrophy.

Mesotrophic lakes tend to grade B or C on the LakeGrade rubric — the productive-but-clear band lines up with the middle of the letter grades.

#	Lake	County	Grade	Clarity	Depth	TSI
1	Seneca Lake Platform	Seneca	A	11.5 ft	-	39
2	Queneska Island Lake	Essex	A	17.4 ft	-	41
3	West Pond	Herkimer	A	-	-	40
4	Carry Pond	Hamilton	A	-	-	41
5	Jockeybush Lake	Hamilton	A	-	-	35
6	Barnes Lake	Lewis	B	-	-	46
7	Isle la Motte Lake	Clinton	C	15.4 ft	-	41
8	Isle la Motte Lake	Clinton	C	12.5 ft	-	44
9	Main Section Lake	Essex	C	15.7 ft	-	41
10	Main Section Lake	Clinton	C	14.8 ft	-	41
11	Little Clear Pond	Franklin	C	-	-	46
12	Grass Pond	Franklin	C	-	-	45

All mesotrophic 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.