What are eutrophic lakes in Florida?

689 eutrophic lakes in Florida. High nutrients, frequent algae, reduced clarity.

What does eutrophic mean?

High nutrients, frequent algae, reduced clarity.

Eutrophic Lakes in Florida

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. 689 Florida 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 carry higher phosphorus and chlorophyll-a readings. The same nutrient richness that defines the trophic class shows up in those numbers.

#	Lake	County	Clarity	Depth	TSI
1	Lake Lancaster West	Orange	3.5 ft	-	56
2	Eastern Lake Outlet	Walton	4.2 ft	-	50
3	Seminole-Secret Lake	Seminole	4.5 ft	-	52
4	Spring Lake	Seminole	2.9 ft	-	54
5	Polk-Fannie Lake	Polk	3.5 ft	-	56
6	Volusia-North Talmadge Lake	Volusia	4.5 ft	-	52
7	Seminole-Spring Lake	Seminole	3 ft	-	56
8	Lake Rowena	Orange	1.8 ft	-	62
9	Seminole-Little Howell Lake	Seminole	5 ft	-	52
10	Putnam-Suggs Lake	Putnam	2 ft	-	61
11	Alachua-Elizabeth Lake	Alachua	3 ft	-	53
12	Hillsborough-Dan Lake	Hillsborough	4.8 ft	-	52
13	Walton-Powell Lake	Walton	3.5 ft	-	51
14	Bear Gully Lake	Seminole	2.6 ft	-	59
15	Fuller Lake Middle	Walton	2.5 ft	-	53
16	Seminole-Bear Gully Lake	Seminole	3.3 ft	-	58
17	Columbia-Jeffery Lake	Columbia	4 ft	-	50
18	Seminole-Clear Lake	Seminole	5.3 ft	-	51
19	Olc Lake	Alachua	2 ft	-	62
20	Osceola-Buck Lake	Osceola	3 ft	-	56
21	Lake Mare Prairie	Orange	2.5 ft	-	61
22	Osceola-Fish Lake	Osceola	4 ft	-	56
23	Lake-Louisa	Lake	1.3 ft	-	59
24	Citrus-Floral City Lake	Citrus	5 ft	-	53
25	Hillsborough-Strawberry Lake	Hillsborough	3.5 ft	-	54
26	Lake-Erie	Lake	3.3 ft	-	55
27	Walton-Alligator Lake	Walton	2 ft	-	54
28	Sarasota-Bobcat Lake	Sarasota	3.8 ft	-	56
29	Bluelake	Volusia	3 ft	-	60
30	Osceola-Alligator Lake	Osceola	4 ft	-	51
31	Lake Powell West	Walton	3 ft	-	53
32	Lake Glenada	Highlands	2.3 ft	-	61
33	Walton-Draper Lake	Walton	3.3 ft	-	51
34	Lake Druid	Orange	6.1 ft	-	50
35	Osceola-Lizzie Lake	Osceola	2.7 ft	-	56
36	Crooked Lake	Orange	2.3 ft	-	58
37	Putnam-Rowan Lake	Putnam	2.5 ft	-	56
38	Minneolaeast Lake	Lake	3.9 ft	-	56
39	Seminole-Triplet Middle Lake	Seminole	3 ft	-	57
40	Lake Ivanhoe East	Orange	3.1 ft	-	54
41	St Lucie-Margaret Lake	St. Lucie	3.8 ft	-	53
42	Highlands-Persimmon Lake	Highlands	2 ft	-	59
43	Leon-Blue Heron Lake	Leon	4.5 ft	-	55
44	Loch Levennwsh Lake	Lake	4.9 ft	-	52
45	Horseshoe North Lake	Seminole	3.9 ft	-	56
46	Lake-Dorr	Lake	3.5 ft	-	53
47	Citrus-Tsala Apopka South Lake	Citrus	5 ft	-	54
48	Polk-Otis Lake	Polk	4 ft	-	53
49	Walton-Camp Creek Lake	Walton	2 ft	-	55
50	Osceola-Tohopekaliga East Lake	Osceola	5 ft	-	51
51	Park Lake	Orange	3.4 ft	-	57
52	Volusia-Waterford Lake	Volusia	5 ft	-	52
53	Orange-Lancaster Lake	Orange	4 ft	-	56
54	Orange-Jessamine Lake	Orange	4 ft	-	51
55	Lake-Florence	Lake	3.5 ft	-	53
56	Little Lake Jackson	Highlands	5.2 ft	-	51
57	Lake Allen Middle	Walton	2.5 ft	-	55
58	Lake Dan @ Center	Hillsborough	3.3 ft	-	56
59	Polk-Whistler Lake	Polk	5 ft	-	50
60	Charlotte-Casa-de-Medows Lake	Charlotte	1.7 ft	-	61
61	Hillsborough-Newlands Lake	Hillsborough	3 ft	-	59
62	Sumter-Panasoffkee Lake	Sumter	6 ft	-	51
63	Little Red Fish Middle Lake	Walton	3 ft	-	54
64	Lake-Little Harris	Lake	2 ft	-	59
65	Hillsborough-Cedar West Lake	Hillsborough	6.3 ft	-	53
66	Eastern Lake Roadside	Walton	4.5 ft	-	50
67	Highlands-Little Bonnet Lake	Highlands	2 ft	-	59
68	Buck Lake	Orange	4.8 ft	-	50
69	Polk-Weohyakapka Lake	Polk	2.4 ft	-	61
70	Polk-Davenport North Lake	Polk	3 ft	-	56
71	Lake-Bay	Lake	3 ft	-	57
72	Pasco-Bird Lake	Pasco	5.8 ft	-	50
73	Lake-Bear	Lake	2.8 ft	-	55
74	Hillsborough-Dosson Lake	Hillsborough	3.3 ft	-	56
75	Orange-John'S Lake	Lake	4.8 ft	-	51
76	Lake-Lorraine	Lake	3.5 ft	-	56
77	Lake-Dora West	Lake	2.3 ft	-	58
78	Seminole-Triplet South Lake	Seminole	3.3 ft	-	59
79	Polk-Lulu Lake	Polk	3 ft	-	57
80	Eastern North Middle Lake	Walton	3.5 ft	-	52
81	Orange-Waunatta Lake	Orange	3.5 ft	-	53
82	Polk-Eagle Lake	Polk	3 ft	-	54
83	Lake Iamonia	Leon	2 ft	-	63
84	Carl Lake	Orange	2.6 ft	-	55
85	Walton-Allen Lake	Walton	2.5 ft	-	56
86	Lake-Eustis	Lake	2.4 ft	-	56
87	Walton-Tresca Lake	Walton	3.2 ft	-	52
88	Lkannctr Lake	Seminole	2.8 ft	-	55
89	Lyc Lake	Lake	4.6 ft	-	51
90	Osceola-Coon Lake	Osceola	1.5 ft	-	62
91	Alligator Lake Roadside	Walton	2.1 ft	-	53
92	Hillsborough-Garden Lake	Hillsborough	4.3 ft	-	52
93	Har Lake	Lake	2.3 ft	-	57
94	Griffin Lake	Lake	2.3 ft	-	60
95	Lake Allen North	Walton	2.8 ft	-	54
96	Deer Lake Roadside	Walton	3 ft	-	51
97	Lkflorida Lake	Seminole	3.9 ft	-	58
98	Lucylksh Lake	Lake	3.9 ft	-	54
99	Alachua-Alto Lake	Alachua	3.5 ft	-	54
100	Joannash Lake	Lake	3.3 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 →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 →Nova Scotia version →British Columbia version →Newfoundland and Labrador version →All Florida lakes →

Source: EPA National Aquatic Resource Surveys, 2026.