Carbon County Lake Quality

Wyoming, 29 lakes, average grade C (Fair)

Carbon County's 29 graded lakes fall in the moderate-density bracket for {{stateName}}. The county-level average smooths over real differences — a single agricultural watershed near the southwest corner can pull the average down even if the rest of the county runs clean. The county average is C — the middle of the rubric, with one or two lakes pulling the average up or down depending on year.

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 Hog Park Reservoir (A); the most-stressed is Spring Lake D (F).

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Quick Answers for Carbon County

Cleanest lakes in Carbon County →Cleanest lakes in Wyoming →Safest swimming lakes in Wyoming →

Planning a trip? Check special fishing regulations for Hog Park Reservoir — or check the official Wyoming fishing regulations.

All Lakes in Carbon County

Rank	Lake	Grade	Clarity	Phosphorus
1	Hog Park Reservoir	A	17.9 ft	-
2	Atlantic Rim Reservoir	A	-	15 µg/L
3	Hanna Water Supply Lake	A	-	15 µg/L
4	Seminoe Reservoir Lacustrine Pelagic	A	17.1 ft	25 µg/L
5	Seminoe Reservoir Transitional Littoral	B	7.1 ft	10 µg/L
6	Seminoe Reservoir Transitional Pelagic	B	11.4 ft	20 µg/L
7	Wallis Reservoir	B	-	20 µg/L
8	Pine Cone Reservoir D	B	-	25 µg/L
9	Rawlins Peaking Reservoir	B	-	20 µg/L
10	Nla Lake	B	19.5 ft	3512.4 µg/L
11	Seminoe Reservoir Pelagic	B	8.5 ft	20 µg/L
12	Seminoe Reservoir Lacustrine Littoral	B	11.7 ft	30 µg/L
13	Seminoe Reservoir Riverine Littoral	B	7.8 ft	20 µg/L
14	Seminoe Reservoir Riverine Pelagic	B	6.6 ft	20 µg/L
15	Pathfinder Reservoir Riverine Pelagic	C	5.9 ft	20 µg/L
16	Seminoe Reservoir	C	-	40 µg/L
17	Teton Reservoir	C	-	50 µg/L
18	Saratoga Reservoir	C	-	40 µg/L
19	Sederlin Lake	C	-	50 µg/L
20	Wakan Tanka Lake D	C	-	45 µg/L
21	Seminoe Reservoir Riverine Pelagic	C	4.4 ft	30 µg/L
22	Pathfinder Reservoir Riverine Littoral	C	4.6 ft	30 µg/L
23	Little Sage Creek Reservoir	D	-	75 µg/L
24	East Allen Lake D	D	-	60 µg/L
25	Shirley Basin Reservoir D	D	-	80 µg/L
26	Elk Mountain Reservoir D	D	-	80 µg/L
27	Rawlins Reservoir	D	-	60 µg/L
28	Spring Lake D	F	-	100 µg/L