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LakeQuality

Mesotrophic Lakes in Massachusetts

38 mesotrophic lakes in Massachusetts. Moderate nutrients, good water quality.

Most well-managed working lakes register as mesotrophic — the band that balances productivity with clarity. 38 lakes in {{stateName}} sit in the mesotrophic band. About 0% are deep (50+ ft); the rest are shallower basins where watershed management keeps nutrients from pushing the system into eutrophy.

Mesotrophic lakes tend to grade B or C on the LakeGrade rubric — the productive-but-clear band lines up with the middle of the letter grades.

#LakeCountyGradeClarityDepthTSI
1Silver LakePlymouthA--41
2Long PondBarnstableA--46
3Gaston PondWorcesterA--43
4Vinica PondHampdenA--45
5Card PondBerkshireA--43
6Queen LakeWorcesterA--41
7Roaring Brook LakeFranklinA--42
8Wrights ReservoirWorcesterA--41
9Ashley LakeBerkshireA--45
10Quacumquasit PondWorcesterA--43
11Hamilton ReservoirHampdenA--41
12Atkins ReservoirFranklinA--45
13Webster LakeWorcesterA--44
14Damon PondHampshireA--44
15Lily PondWorcesterA--46
16Crystal LakeEssexA--41
17Crystal LakeWorcesterA--42
18Walden PondEssexA--41
19Fitchburg ReservoirMiddlesexA--41
20Ponkapoag PondNorfolkA--41
21Fort PondWorcesterA--45
22Lower Crow Hill PondWorcesterA--41
23Wankinco River LakePlymouthA--44
24White PondBarnstableA--41
25Chebacco LakeEssexA--46
26Long PondWorcesterB--48
27Long PondBarnstableB--48
28Little River LakeWorcesterB--48
29Buckley-Dunton LakeBerkshireB--50
30Metacomet LakeHampshireB--47
31Sargent PondWorcesterB--47
32Field PondEssexB--49
33Cambridge ReservoirMiddlesexB--47
34Nabnasset PondMiddlesexB--48
35Ezekiel PondPlymouthB--46
36Shubael PondBarnstableB--49
37Island PondPlymouthB--48
38Chebacco LakeEssexB--48

Source: EPA National Aquatic Resource Surveys, 2026.