Eutrophic Lakes in Nebraska

45 eutrophic lakes in Nebraska. 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. 45 {{stateName}} 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	Davis Creek Reservoir	Greeley	B	3.9 ft	-	51
2	Lake Minatare	Scotts Bluff	B	5.4 ft	-	52
3	Lake C W Mcconaughy	Keith	B	7.2 ft	-	53
4	Box Butte Reservoir	Dawes	B	5.6 ft	-	53
5	Enders Reservoir	Chase	C	2.8 ft	-	59
6	Cub Creek Lake	Keya Paha	C	4.9 ft	-	55
7	Lake Maloney	Lincoln	C	2.1 ft	-	60
8	Cottonwood Lake	Cherry	C	6.7 ft	-	56
9	Chalkrock Lake	Cedar	C	3.3 ft	-	56
10	Skyview Lake	Madison	C	6.2 ft	-	53
11	Kramper Lake	Dakota	C	4.5 ft	-	57
12	Lake Whitney	Dawes	C	0.5 ft	-	69
13	Hugh Butler Lake	Frontier	C	2.8 ft	-	59
14	Lake Ogallala	Keith	C	4.9 ft	-	57
15	Johnson Lake	Gosper	C	2.8 ft	-	60
16	Nla Lake	Saunders	C	1.9 ft	-	63
17	Nla Lake	Saunders	C	1.7 ft	-	64
18	Nla Lake	Garden	C	-	-	59
19	Sherman Reservoir	Sherman	C	2.4 ft	-	60
20	Harry Strunk Lake	Frontier	C	2.5 ft	-	61
21	Oliver Reservoir	Kimball	C	1.7 ft	-	62
22	Swanson Reservoir	Hitchcock	C	2.6 ft	-	61
23	Prairie Queen Lake	Sarpy	C	3.3 ft	-	60
24	Nla Lake	Buffalo	D	4.1 ft	-	62
25	Nla Lake	Dawson	D	2.2 ft	-	65
26	Harlan County Reservoir	Harlan	D	2.8 ft	-	66
27	Jenny Newman Lake	Cass	D	5.4 ft	-	60
28	Lake Wanahoo	Saunders	D	2.4 ft	-	66
29	Lake North	Platte	D	1.3 ft	-	68
30	Jeffrey Reservoir	Lincoln	D	1.5 ft	-	67
31	Gallagher Canyon Reservoir	Dawson	D	1.3 ft	-	70
32	Powder Creek Lake	Dixon	D	2.7 ft	-	63
33	Buckskin Hills Lake	Dixon	D	2.4 ft	-	65
34	Mistake Lake	Cherry	D	-	-	68
35	Ravenna Lake E of Ravenna	Buffalo	D	-	-	65
36	Calamus Reservoir	Garfield	D	3.6 ft	-	65
37	Kirkman'S Cove Lake	Richardson	D	1.4 ft	-	69
38	Nla Lake	Seward	D	2.7 ft	-	67
39	Nla Lake	Lincoln	D	2.7 ft	-	66
40	Summit Lake	Burt	D	2.6 ft	-	67
41	Grove Lake	Antelope	D	2.1 ft	-	70
42	Qacnelakedup	Douglas	D	-	-	68
43	Carter Lake	Douglas	F	3.2 ft	-	67
44	Czechland Lake	Saunders	F	2.1 ft	-	68
45	Homestead Lake	Butler	F	3 ft	-	65

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 →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.