Washoe County Lake Quality

Nevada, 23 lakes, average grade D (Poor)

There are 23 graded lakes in Washoe County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. On average, Washoe County lakes grade D, with phosphorus loading and reduced clarity showing up across most of the dataset.

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 Lake Tahoe (A); the most-stressed is Steamboat Creek Lake (F).

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Quick Answers for Washoe County

Cleanest lakes in Washoe County →Cleanest lakes in Nevada →Safest swimming lakes in Nevada →

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

All Lakes in Washoe County

Rank	Lake	Grade	Clarity	Phosphorus
1	Lake Tahoe	A	-	-
2	Boulder Reservoir	B	-	50 µg/L
3	Nla Lake	B	-	70.4 µg/L
4	Squaw Creek Reservoir	B	-	60 µg/L
5	Nla Lake	C	10.7 ft	41534 µg/L
6	Sparks Marina Lake	C	-	190 µg/L
7	Wall Canyon Reservoir	C	-	120 µg/L
8	Catnip Reservoir	C	-	100 µg/L
9	Nla Lake	C	-	137000 µg/L
10	Sparks Marina West Side Lake	C	-	165 µg/L
11	Nla Lake	D	1 ft	230000 µg/L
12	Sparks Marina Cove Lake	D	-	140 µg/L
13	Steamboat Creek Lake	F	-	246 µg/L
14	Little Washoe Outfall Lake	F	-	820 µg/L
15	Warrior Point Lake	F	-	500 µg/L
16	Popcorn Rock Beach Lake	F	-	500 µg/L
17	Blockhouse Lake	F	-	500 µg/L