Hypereutrophic Lakes in Nebraska

51 hypereutrophic lakes in Nebraska. 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. 51 hypereutrophic lakes are on the {{stateName}} 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	Cub Creek Lake	Jefferson	B	0.2 ft	-	75
2	Nla Lake	Holt	C	2.7 ft	-	88
3	Nla Lake	Sherman	C	1.4 ft	-	98
4	Nla Lake	Gage	C	0.3 ft	-	113
5	Nla Lake	Jefferson	C	0 ft	-	91
6	Nla Lake	Lincoln	D	2.1 ft	-	94
7	Nla Lake	Scotts Bluff	D	3.1 ft	-	91
8	Nla Lake	Cherry	D	4.6 ft	-	90
9	Nla Lake	Frontier	D	0.8 ft	-	111
10	Nla Lake	Sheridan	D	1.4 ft	-	110
11	Nla Lake	Harlan	D	1.6 ft	-	101
12	Nla Lake	Garden	D	1.1 ft	-	105
13	Nla Lake	Dawson	D	3.1 ft	-	98
14	Nla Lake	Polk	D	0.2 ft	-	88
15	Lone Star Reservoir	Fillmore	D	2.1 ft	-	78
16	Willow Creek Reservoir	Sarpy	D	1.5 ft	-	71
17	Rockford Lake	Gage	D	1.7 ft	-	74
18	Goose Lake	Holt	D	1 ft	-	73
19	Oxbow Trails Reservoir	Butler	D	1.3 ft	-	80
20	Maskenthine Reservoir	Stanton	F	2.1 ft	-	71
21	Nla Lake	Lincoln	F	0.5 ft	-	118
22	Nla Lake	Lancaster	F	0.9 ft	-	113
23	Nla Lake	Cherry	F	0.5 ft	-	89
24	Nla Lake	Garden	F	0.1 ft	-	137
25	Nla Lake	Rock	F	0.6 ft	-	116
26	Nla Lake	Gage	F	0.5 ft	-	126
27	Nla Lake	Saunders	F	0.8 ft	-	114
28	Nla Lake	Wheeler	F	1.3 ft	-	109
29	Nla Lake	Cherry	F	0.5 ft	-	124
30	Nla Lake	Lancaster	F	1.6 ft	-	112
31	Nla Lake	Lancaster	F	1.1 ft	-	108
32	Nla Lake	Jefferson	F	1.1 ft	-	87
33	Nla Lake	Garden	F	0.7 ft	-	84
34	Carter Lake Max Depth	Douglas	F	1.3 ft	-	70
35	Willow Creek Reservoir	Pierce	F	1.3 ft	-	73
36	Swan Creek Lake	Saline	F	1.5 ft	-	80
37	Merritt Reservoir	Cherry	F	2 ft	-	73
38	Lake Hastings	Adams	F	0.3 ft	-	82
39	Liberty Cove Lake	Webster	F	2.2 ft	-	74
40	Pibel Lake	Wheeler	F	2 ft	-	81
41	Big Indian Lake	Gage	F	1.5 ft	-	74
42	Pelican Lake	Cherry	F	1.2 ft	-	77
43	Smith Lake	Sheridan	F	1.7 ft	-	75
44	Memphis Lake	Saunders	F	1.5 ft	-	71
45	Hedgefield Lake	Lancaster	F	1.6 ft	-	79
46	Meadowlark Lake	Seward	F	1.8 ft	-	73
47	Burchard Lake	Pawnee	F	1.9 ft	-	71
48	Crescent Lake	Garden	F	0.8 ft	-	77
49	Swan Lake	Holt	F	1.8 ft	-	71
50	Wildwood Lake	Lancaster	F	1.7 ft	-	75
51	Seward City Park Pond	Seward	F	-	-	101

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 →Florida version →Colorado version →North Carolina version →Vermont version →Texas version →Oregon version →Arkansas version →Oklahoma version →Kansas 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 →All Nebraska lakes →

Source: EPA National Aquatic Resource Surveys, 2026.