Hypereutrophic Lakes in Utah

17 hypereutrophic lakes in Utah. 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. 17 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	Redmond Lake	Sevier	D	0.7 ft	-	70
2	Gsl Farmington Bay Outflow Lake	Davis	F	1 ft	-	76
3	Lake Powell Hite Midchannel	San Juan	F	1.3 ft	-	73
4	Nla Lake	Cache	F	0.5 ft	-	80
5	Nla Lake	Uintah	F	0.7 ft	-	82
6	Nla Lake	Sevier	F	0.5 ft	-	78
7	Nla Lake	Salt Lake	F	0.7 ft	-	74
8	Nla Lake	Weber	F	0.1 ft	-	90
9	Utah Lake	Utah	F	0.5 ft	-	84
10	Utah Lake	Utah	F	0.7 ft	-	79
11	Utah Lake Goshen Bay Southwest End	Utah	F	0.7 ft	-	76
12	Utah Lake Outside Entrance To Provo Bay	Utah	F	0.7 ft	-	75
13	Utah Lake	Utah	F	0.7 ft	-	81
14	Utah Lake	Utah	F	0.7 ft	-	77
15	Lake Powell Mid Channel Midway Between Trachyte Creek And Twomile Canyon	San Juan	F	0.1 ft	-	105
16	Gsl Breach Lake	Box Elder	F	-	-	83
17	Farmington Bay Lake	Davis	F	-	-	82

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 →Nebraska version →Nevada version →Arizona version →Idaho version →Montana version →New Mexico version →Tennessee version →Alabama version →Virginia version →Kentucky version →Washington version →Wyoming version →All Utah lakes →

Source: EPA National Aquatic Resource Surveys, 2026.