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

Cleanest Lakes in Middlesex County, Massachusetts

Ashby Reservoir in Middlesex County leads the rankings on measured clarity and nutrients. Below are the top 50 cleanest monitored lakes in Middlesex County, Massachusetts, ranked on EPA nutrient and algae measurements.

Ranked List

#LakeCountyClarityPhosphorusAlgae
1Ashby ReservoirMiddlesex---
2Harbor PondMiddlesex---
3Heald PondMiddlesex---
4Coon Tree PondMiddlesex---
5Nashua River ReservoirMiddlesex---
6Plow Shop PondMiddlesex---
7Eldridge PondMiddlesex---
8Grove PondMiddlesex---
9Sandy PondMiddlesex---
10Flannagan PondMiddlesex---
11Long PondMiddlesex---
12Spectacle PondMiddlesex---
13Long PondMiddlesex---
14Fort PondMiddlesex---
15Nagog PondMiddlesex---
16Cramberry Bog Reservoir Number OneMiddlesex---
17Russell MillpondMiddlesex---
18Batemans PondMiddlesex---
19Warners PondMiddlesex---
20White PondMiddlesex---
21Fairhaven BayMiddlesex---
22Flints PondMiddlesex---
23Walden PondMiddlesex---
24Lower Mystic LakeMiddlesex---
25Upper Mystic LakeMiddlesex---
26North ReservoirMiddlesex---
27Middle ReservoirMiddlesex---
28Spot PondMiddlesex---
29Crystal LakeMiddlesex---
30Mill Pond ReservoirMiddlesex---
31Nutting LakeMiddlesex---
32Richardson PondMiddlesex---
33Long PondMiddlesex---
34Ames PondMiddlesex---
35Martins PondMiddlesex---
36Swan PondMiddlesex---
37Peters PondMiddlesex---
38Flint PondMiddlesex---
39Althea LakeMiddlesex---
40Burges PondMiddlesex---
41Newfield PondMiddlesex---
42Fletchers PondMiddlesex---
43Long Sought-for PondMiddlesex---
44Keyes PondMiddlesex---
45Forge PondMiddlesex---
46Whitney PondMiddlesex---
47Lost LakeMiddlesex---
48Knops PondMiddlesex---
49Baddacook PondMiddlesex---
50Massapoag PondsMiddlesex---

More Answers for Middlesex County, Massachusetts

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