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

Cleanest Lakes in Grand County, Colorado

Willow Creek Reservoir in Grand County leads the rankings with a water quality grade of C and 3.9 ft of clarity. Below are the top 24 cleanest monitored lakes in Grand County, Colorado, ranked by EPA water quality score.

Ranked List

#LakeCountyGradeClarityPhosphorusAlgae
1Willow Creek ReservoirGrandC3.9 ft75.5 µg/L2.4 µg/L
2Wolford Mountain ReservoirGrandC7.5 ft13 µg/L2 µg/L
3Grand LakeGrandC8.7 ft14 µg/L2.7 µg/L
4Shadow Mountain LakeGrandD7.9 ft20 µg/L5.1 µg/L
5Windy Gap ReservoirGrandD-52 µg/L3 µg/L
6Little King Ranch ReservoirGrandNR---
7Windy Gap ReservoirGrandNR---
8Monarch LakeGrandNR---
9Columbine LakeGrandNR---
10Lake VernaGrandNR---
11Lake NanitaGrandNR---
12Crater LakeGrandNR---
13Meadow Creek ReservoirGrandNR---
14East Branch ReservoirGrandNR---
15Sylvan ReservoirGrandNR---
16Williams Fork ReservoirGrandNR---
17Binco ReservoirGrandNR---
18Red Dirt ReservoirGrandNR---
19Hinman ReservoirGrandNR---
20Wolford Mountain ReservoirGrandNR---
21Matheson ReservoirGrandNR---
22Dumont LakeGrandNR---
23Whiteley Peak ReservoirGrandNR---
24Lake AgnesGrandNR---

More Answers for Grand County, Colorado

All lakes in Grand County →Cleanest lakes in Colorado →

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