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LakeQuality
Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water

Cleanest Lakes in Snohomish County, Washington

Lake Janus in Snohomish County leads the rankings on measured clarity and nutrients. Below are the top 46 cleanest monitored lakes in Snohomish County, Washington, ranked on EPA nutrient and algae measurements.

Ranked List

#LakeCountyClarityPhosphorusAlgae
1Lake JanusSnohomish---
2Pear LakeSnohomish---
3Lake SereneSnohomish---
4Sunset LakeSnohomish---
5Lake IsabelSnohomish---
6Tomtit LakeSnohomish---
7Dagger LakeSnohomish---
8Lake HannanSnohomish---
9Lake FontalSnohomish---
10Hanson SloughSnohomish---
11Crystal LakeSnohomish---
12Lake BallingerSnohomish---
13Silver LakeSnohomish---
14Lake SereneSnohomish---
15Riley LakeSnohomish---
16Irvine SloughSnohomish---
17Sunday LakeSnohomish---
18Lake KiSnohomish---
19Crabapple LakeSnohomish---
20Lake ShoecraftSnohomish---
21Lake HowardSnohomish---
22Lake MarthaSnohomish---
23Blackmans LakeSnohomish---
24Storm LakeSnohomish---
25Flowing LakeSnohomish---
26Panther LakeSnohomish---
27Bosworth LakeSnohomish---
28Lake CassidySnohomish---
29Lake StevensSnohomish---
30Lake ArmstrongSnohomish---
31Twin LakesSnohomish---
32Boardman LakeSnohomish---
33Lake TwentytwoSnohomish---
34Lake ChaplainSnohomish---
35Lake CochranSnohomish---
36Wallace LakeSnohomish---
37Big Greider LakeSnohomish---
38Spada LakeSnohomish---
39Copper LakeSnohomish---
40Silver LakeSnohomish---
41Blanca LakeSnohomish---
42Twin LakesSnohomish---
43Goat LakeSnohomish---
44Lake ByrneSnohomish---
45North LakeSnohomish---
46Helena LakeSnohomish---

More Answers for Snohomish County, Washington

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