Summit County Lake Quality

Utah, 35 lakes, average grade B (Good)

There are 35 graded lakes in Summit County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. With an average grade of B, Summit County sits comfortably above the {{stateName}} median.

The county's lakes lean shallow, which makes the grades sensitive to wind, sediment-resuspension, and any nutrient inputs from the watershed. The cleanest lake on the books is Nla Lake (A); the most-stressed is Nla Lake (C).

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Quick Answers for Summit County

Cleanest lakes in Summit County →Cleanest lakes in Utah →Safest swimming lakes in Utah →

Planning a trip? Check special fishing regulations for Nla Lake — or check the official Utah fishing regulations.

All Lakes in Summit County

Rank	Lake	Grade	Clarity	Phosphorus
1	Nla Lake	A	18.2 ft	-
2	Nla Lake	A	17.2 ft	-
3	Lyman Lake	A	19.7 ft	-
4	Rockport Lake	A	10.3 ft	-
5	Nla Lake	A	10.8 ft	-
6	Echo Lake	A	11.2 ft	-
7	Whitney Reservoir	A	17.7 ft	-
8	Lyman Lake Replicate of	A	14.1 ft	-
9	Rockport Mid Lake	B	12.3 ft	-
10	Nla Lake	B	8.9 ft	-
11	Rockport Inflow Lake	B	10.6 ft	-
12	Echo Mid Res Lake	B	10.4 ft	-
13	Smith And Morehouse Reservoir	B	7.5 ft	-
14	Nla Lake	B	5 ft	-
15	Beaver Meadow Reservoir	B	4.6 ft	-
16	Echo Inflow Lake	C	7 ft	-
17	Nla Lake	C	5.1 ft	-
18	Hoop Lake	C	5.6 ft	-