Fremont County Lake Quality

Wyoming, 37 lakes, average grade C (Fair)

Fremont County's 37 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. Fremont County averages to a C. The distribution behind that average matters more than the letter: a few stressed lakes versus many decent ones can produce the same average as the inverse.

Most of the county's monitored lakes are shallow — under 50 feet — which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Worthen Meadows Reservoir (A) is the cleanest in the county.

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Quick Answers for Fremont County

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

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

All Lakes in Fremont County

Rank	Lake	Grade	Clarity	Phosphorus
1	Worthen Meadows Reservoir	A	15.9 ft	10 µg/L
2	Lake Cameahwait	B	11.6 ft	20 µg/L
3	Boysen Reservoir	B	11.5 ft	20 µg/L
4	Boysen Reservoir Transitional Embayment	B	11 ft	20 µg/L
5	Lower Jade Lake	B	-	20 µg/L
6	Nla Lake	B	19.6 ft	14000 µg/L
7	Boysen Reservoir	B	12.4 ft	30 µg/L
8	Boysen Reservoir	C	8.1 ft	40 µg/L
9	Brooks Lake	C	6.7 ft	30 µg/L
10	Boysen Reservoir	C	9.2 ft	30 µg/L
11	Frye Lake	C	8.4 ft	-
12	Brooks Lake Creek	C	-	50 µg/L
13	Brooks Lake	C	-	50 µg/L
14	Lower Jade Lake Littoral	C	-	30 µg/L
15	Brooks Lake	C	-	50 µg/L
16	Pilot Butte Reservoir Lpd	C	-	30 µg/L
17	Pilot Butte Reservoir Rtpd	C	-	50 µg/L
18	Nla Lake	C	-	102.7 µg/L
19	Ocean Lake	C	2.2 ft	25 µg/L
20	Brooks Lake	C	6.3 ft	50 µg/L
21	Boysen Reservoir	C	4.5 ft	40 µg/L
22	Boysen Reservoir	D	2.5 ft	35 µg/L
23	Brooks Lake	D	6.7 ft	90 µg/L
24	Brooks Lake	D	6.2 ft	80 µg/L
25	Upper Brooks Lake	D	-	70 µg/L
26	Brooks Lake	D	-	70 µg/L
27	Lower Jade Lake Outlet	D	-	70 µg/L
28	Lower Jade Lake Inlet	D	-	80 µg/L
29	Upper Brooks Lake	D	-	80 µg/L
30	Brooks Lake Inlet	D	-	70 µg/L
31	Upper Brooks Lake Pelagic	D	-	80 µg/L
32	Nla Lake	D	0.5 ft	792.6 µg/L
33	Brooks Lake	D	6 ft	90 µg/L
34	Brooks Lake	F	-	740 µg/L
35	Brooks Lake Creek	F	-	100 µg/L
36	Brooks Lake	F	-	100 µg/L
37	Kinnear Lake D	F	-	130 µg/L