Hypereutrophic Lakes in Florida

163 hypereutrophic lakes in Florida. Very high nutrients, dense algae, poor clarity.

Hypereutrophic lakes (TSI above 70) are at the upper end of the productivity scale: visible algal blooms most weeks of summer, clarity often under 3 feet, and meaningful risk of harmful-algal-bloom toxin events. 163 hypereutrophic lakes are on the Florida books. Almost none of them are deep — 0% break 50 feet. Shallow basin plus heavy nutrient input is the consistent recipe.

Hypereutrophic lakes overwhelmingly grade D or F — the trophic class and the grade are measuring closely-related dimensions of the same underlying nutrient regime.

#	Lake	County	Grade	Clarity	Depth	TSI
1	Polk-Little Bass Lake	Polk	D	1.3 ft	-	82
2	Alicetst Lake	Alachua	D	3.3 ft	-	76
3	Polk-Big Bass Lake	Polk	D	1 ft	-	84
4	Lake Roberta	Hillsborough	D	1.3 ft	-	73
5	Megginnis Arm Off Crowder Landing Lake	Leon	D	1 ft	-	71
6	Highlands-Josephine West Lake	Highlands	D	1.5 ft	-	70
7	Lwc Lake	Brevard	D	1.6 ft	-	71
8	Highlands-Wolf Lake	Highlands	D	1 ft	-	80
9	Febin Lake	Glades	D	1 ft	-	77
10	Ncenter Lake	Okeechobee	D	1 ft	-	75
11	Bcl Lake	Indian River	D	2 ft	-	74
12	Alligator Lake	Pinellas	D	2.6 ft	-	70
13	Trout Lk Eus Lake	Lake	D	1.8 ft	-	70
14	Ft Meade Pit Ne Lake	Polk	D	1.5 ft	-	75
15	Indian River-Blue Cypress Lake	Indian River	D	2 ft	-	73
16	Rosslake	Putnam	D	1.3 ft	-	72
17	Lksuggs Lake	Putnam	D	1.6 ft	-	73
18	Polk-Boca Cove Lake	Polk	D	1.4 ft	-	80
19	Seminole-Jesup North Lake	Seminole	D	1 ft	-	73
20	Sarasota-Cormorant Lake	Sarasota	D	2.4 ft	-	71
21	Irvin Lake	Hernando	D	1.3 ft	-	76
22	Hernando-Mountain Lake	Hernando	D	2.3 ft	-	71
23	Lake Monroe	Volusia	D	1.6 ft	-	72
24	Carter Rd Y Pit Lake	Polk	D	2.5 ft	-	78
25	Lake of the Woods	Orange	D	1.3 ft	-	72
26	Tiger Lake	Polk	D	1 ft	-	76
27	Polk-Flora Lake	Polk	D	1.5 ft	-	77
28	Saddle Crk Pk Z Lake	Polk	D	2 ft	-	72
29	Marion-Charles Lake	Marion	D	1 ft	-	71
30	Lake Richmond	Orange	D	1 ft	-	71
31	Lake Seminole	Pinellas	D	1 ft	-	71
32	Alachua-Newnan Lake	Alachua	D	1.3 ft	-	77
33	New Lake	Alachua	D	1 ft	-	72
34	Marion-Eaton Lake	Marion	D	0.8 ft	-	74
35	Goosecent Lake	Putnam	D	1.6 ft	-	77
36	Sarasota-Uplands Lake	Sarasota	D	0.8 ft	-	84
37	Polk-Gaskin'S Cut Lake	Polk	D	1.4 ft	-	81
38	Ruthlkecen Lake	Brevard	D	1.3 ft	-	71
39	Sarasota-Upper Myakka Lake	Sarasota	D	2 ft	-	79
40	Saddle Crk Pk X Lake	Polk	D	1.8 ft	-	72
41	Alachua-Little Orange Lake	Alachua	D	2.8 ft	-	70
42	Pinellas-Jungle Lake	Pinellas	D	2.3 ft	-	75
43	Lake Hancock	Polk	D	1 ft	-	81
44	Lake Okeechobee	Palm Beach	D	1 ft	-	77
45	Florencelk Lake	Brevard	D	1.3 ft	-	75
46	Bonnet-Col Lake	Polk	D	0.8 ft	-	81
47	Hillsborough-Weeks Lake	Hillsborough	D	1.4 ft	-	77
48	Lake Thonotasassa Center	Hillsborough	D	1.3 ft	-	81
49	Horney-Col Lake	Polk	D	1.6 ft	-	71
50	Alachua-Kingswood Lake	Alachua	D	2.5 ft	-	70
51	Apopka Lake	Orange	D	1.6 ft	-	75
52	Lake Seminole	Pinellas	D	1 ft	-	72
53	Lkcondel Lake	Orange	D	1.6 ft	-	73
54	Eastshore Lake	Martin	D	1 ft	-	76
55	Bivens Arm Lake	Alachua	D	1 ft	-	77
56	Twin Lakes	Okaloosa	D	2 ft	-	81
57	Ft Meade Pit Sw Lake	Polk	D	1.8 ft	-	76
58	Morton-Col Lake	Polk	D	1.3 ft	-	70
59	Dead Lake	Flagler	D	1.6 ft	-	77
60	Carter Rd X Pit Lake	Polk	D	3.1 ft	-	78
61	Hillsborough-Mystik Lake	Hillsborough	D	2.5 ft	-	76
62	Hillsborough-Stearns Lake	Hillsborough	D	2 ft	-	74
63	Hillsborough-Michaela Lake	Hillsborough	D	1.5 ft	-	76
64	Kinsale Lake	Leon	D	1.6 ft	-	72
65	Lake Lorraine	Volusia	D	2 ft	-	71
66	Lt Banana Lake	Polk	D	1.6 ft	-	71
67	Twin Lake South Lobe	Okaloosa	D	2 ft	-	80
68	Sarasota-Vaas Lake	Sarasota	D	1.7 ft	-	80
69	Tgrlke Lake	Polk	D	1.1 ft	-	77
70	Lkemerld Lake	Orange	D	1.6 ft	-	70
71	Tallavana Lake	Gadsden	D	1 ft	-	81
72	Bivensarm Lake	Alachua	D	0.7 ft	-	81
73	Pinellas-Saundra Lake	Pinellas	D	1.3 ft	-	72
74	Hillsborough-Thonotosassa Lake	Hillsborough	D	1.5 ft	-	79
75	Lake Marian Pavilion	Osceola	D	0.8 ft	-	80
76	Sparkman Lake @ Center	Hernando	D	1 ft	-	78
77	Charlotte-Sunapee Lake	Charlotte	D	1.8 ft	-	71
78	Pinellas-Alligator Lake	Pinellas	D	2.2 ft	-	71
79	Orange-Odell Lake	Orange	D	1.5 ft	-	76
80	Lake Thonotosassa	Hillsborough	D	1.3 ft	-	82
81	Lkfairho Lake	Orange	D	1 ft	-	76
82	Pasco-Conley Lake	Pasco	D	1 ft	-	74
83	Hammocklak Lake	Alachua	D	1.3 ft	-	78
84	Hillsborough-Grady Lake	Hillsborough	D	1.8 ft	-	70
85	Pinellas-Jungle North Inlet Lake	Pinellas	D	1.5 ft	-	75
86	Blanton Lake South Lobe	Pasco	D	2 ft	-	71
87	Hancock Outflow Lake	Polk	D	0.7 ft	-	88
88	Lake Istokpoga	Highlands	D	1 ft	-	71
89	Sarasota-Lower Myakka Lake	Sarasota	D	2.2 ft	-	75
90	Saddle Creek Pk Z Lake	Polk	D	2.1 ft	-	73
91	Venice Gardens Lake	Sarasota	D	1 ft	-	78
92	Hancock P Lake	Polk	D	0.7 ft	-	88
93	Saddle Creek Pk X Lake	Polk	D	2 ft	-	72
94	Monroe-Desbiens Lake	Monroe	D	2.5 ft	-	74
95	Middle of Lake Francis	Madison	D	1.6 ft	-	72
96	Alachua-Alice Lake	Alachua	D	5 ft	-	73
97	Waldenlake	Hillsborough	D	1.1 ft	-	78
98	Lake Vedra	St. Johns	D	2.3 ft	-	77
99	Micklers Lake	St. Johns	D	1.7 ft	-	73
100	Denham Lake	Lake	D	0.8 ft	-	74

All hypereutrophic 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 →All Florida lakes →

Source: EPA National Aquatic Resource Surveys, 2026.