Eutrophic Lakes in Nevada

34 eutrophic lakes in Nevada. 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. 34 {{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	Nla Lake	Clark	B	0.9 ft	-	57
2	Boulder Reservoir	Washoe	B	-	-	61
3	Nla Lake	Washoe	B	-	-	52
4	Squaw Creek Reservoir	Washoe	B	-	-	63
5	Nla Lake	Elko	C	12.4 ft	-	69
6	Nla Lake	Mineral	C	31.5 ft	-	51
7	Nla Lake	Lander	C	6.4 ft	-	50
8	Nla Lake	Elko	C	12.8 ft	-	50
9	Sheep Creek Lake	Elko	C	6.2 ft	-	54
10	Ionactis Tinaja Lake	Clark	C	-	-	54
11	Lahontan Reservoir Narrows Outlet	Churchill	C	-	-	62
12	Rye Patch Reservoir	Pershing	C	-	-	57
13	Lahontan Reservoir	Churchill	C	-	-	60
14	Billy Shaw Lake	Elko	C	-	-	56
15	Sparks Marina Lake	Washoe	C	-	-	59
16	Echo Canyon Reservoir	Lincoln	C	-	-	51
17	Lahontan Reservoir	Churchill	C	-	-	62
18	Rye Patch Reservoir North	Pershing	C	-	-	57
19	Lahontan Reservoir East of Silver Springs Beach	Lyon	C	-	-	66
20	Sparks Marina West Side Lake	Washoe	C	-	-	62
21	Wildhorse Res North Arm Lake	Elko	C	-	-	68
22	Eagle Valley Reservoir	Lincoln	C	-	-	62
23	Walker Lake	Mineral	D	4.7 ft	-	70
24	Wildhorse Res North Basin Lake	Elko	D	9.8 ft	-	58
25	Indian Gardens Tinaja Lake	Clark	D	-	-	65
26	Mckay Wash Tinaja Lake	Clark	D	-	-	69
27	Lahontan Reservoir Narrows Inlet	Lyon	D	-	-	70
28	Lahontan Reservoir	Lyon	D	-	-	69
29	Jd Ponds	Eureka	D	-	-	70
30	Sparks Marina Cove Lake	Washoe	D	-	-	65
31	Mountain View Lake	Elko	D	-	-	63
32	Spooner Lake	Douglas	D	-	-	62
33	Wildhorse Res South Basin Lake	Elko	D	3.3 ft	-	69
34	Wildhorse Reservoir	Elko	F	5.9 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 →Nebraska 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 Nevada lakes →

Source: EPA National Aquatic Resource Surveys, 2026.