Eutrophic Lakes in New York

60 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. 60 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	Irondequoit Bay Lake	Monroe	C	7 ft	-	52
2	Southern Section Lake	Essex	C	2.6 ft	-	55
3	Southern Section Lake	Washington	D	2 ft	-	60
4	Irondequoit Bay Lake	Monroe	D	5.3 ft	-	57
5	Pleasure Lake	Sullivan	D	4.3 ft	-	56
6	Fresh Pond	Suffolk	D	6.5 ft	-	50
7	Palmer Lake	Putnam	D	3.6 ft	-	59
8	Duck Lake	Cayuga	D	4.3 ft	-	56
9	Eagle Pond	Franklin	D	5.2 ft	-	53
10	Otisco Lake	Onondaga	D	5.2 ft	-	53
11	Ballston Lake	Saratoga	D	5.8 ft	-	52
12	Vosburg Pond	Rensselaer	D	4.1 ft	-	57
13	Sagamore Lake	Putnam	D	5 ft	-	54
14	Deer Lake	Broome	D	4.6 ft	-	55
15	Smith Pond	Steuben	D	3.9 ft	-	58
16	Lake Salubria	Steuben	D	5.8 ft	-	52
17	Long Pond	Suffolk	D	4 ft	-	57
18	Lake Mohegan	Westchester	D	3.4 ft	-	59
19	Kirk Lake	Putnam	D	5 ft	-	54
20	Lake Rippowam	Westchester	D	5.4 ft	-	53
21	Sodus Bay Lake	Wayne	D	6.2 ft	-	51
22	Little Fresh Pond	Suffolk	D	3.8 ft	-	58
23	Sage Pond	Oswego	D	5.4 ft	-	53
24	Otter Lake	Oneida	D	6.6 ft	-	50
25	Lake Peekskill	Putnam	D	3.9 ft	-	57
26	Beaver Lake	Broome	D	5.5 ft	-	53
27	Lake Tibet	Putnam	D	3.7 ft	-	58
28	Lake Waccabuc	Westchester	D	5.7 ft	-	52
29	Barger Pond	Putnam	D	3.9 ft	-	57
30	Tomkins Lake	Rockland	D	5.4 ft	-	53
31	Swamp Pond	Sullivan	D	3.9 ft	-	58
32	Pleasant Lake	Oswego	D	4.4 ft	-	56
33	Waneta Lake	Schuyler	D	4.3 ft	-	56
34	Kinderhook Lake	Columbia	D	6.1 ft	-	51
35	Sleepy Hollow Lake	Greene	D	5.9 ft	-	52
36	Seven Hills Lake	Putnam	D	4.8 ft	-	54
37	Plymouth Reservoir	Chenango	D	6.2 ft	-	51
38	Lake Carmel	Putnam	D	5.6 ft	-	52
39	Duane Lake	Schenectady	D	3.8 ft	-	58
40	Stissing Pond	Dutchess	D	5.9 ft	-	52
41	Jamesville Reservoir	Onondaga	D	5.3 ft	-	53
42	Lucilleballpark Lake	Chautauqua	D	4.2 ft	-	56
43	Biginlet Lake	Chautauqua	D	6.2 ft	-	51
44	Longpoint Lake	Chautauqua	D	3.9 ft	-	58
45	Lk Ontario Lake	Monroe	D	-	-	66
46	Orange Lake	Orange	F	2.4 ft	-	65
47	Lake Lincolndale	Westchester	F	2.8 ft	-	62
48	Truitt Pond	Chenango	F	3.2 ft	-	60
49	Howlands Lake	Westchester	F	3.1 ft	-	61
50	Buckingham Lake	Albany	F	2.5 ft	-	64
51	Deer River Flow Lake	Franklin	F	3.3 ft	-	60
52	Lake Lacoma	Monroe	F	3 ft	-	62
53	Java Lake	Wyoming	F	2.1 ft	-	66
54	Lake Lucille	Rockland	F	2.3 ft	-	65
55	Lakewood	Chautauqua	F	1.9 ft	-	68
56	Bridgesouth Lake	Chautauqua	F	3 ft	-	62
57	Dutchhollow Lake	Chautauqua	F	2.4 ft	-	64
58	Cheneypoint Lake	Chautauqua	F	3.1 ft	-	61
59	Svp Lake	Chautauqua	F	2.8 ft	-	62
60	Greenwood Lake	Orange	F	3.1 ft	-	61

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 →All New York lakes →

Source: EPA National Aquatic Resource Surveys, 2026.