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

Barnstable County Lake Quality

Massachusetts, 94 lakes, measured by MassDEP

Barnstable County in Massachusetts carries 94 monitored lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. 8 of those lakes carry recent nutrient and algae readings. The county-level summary describes that subset, not every water body listed. The county-wide picture is low-to-moderate phosphorus with clear summer transparency across most monitored lakes.

Most of the county's monitored lakes are shallow, under 50 feet, which means wind keeps the water column mixed all summer and sediment-bound phosphorus releases back into the surface layer whenever the bottom is disturbed. Long Pond has the lowest nutrient and algae readings in the county.

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Quick Answers for Barnstable County

Cleanest lakes in Barnstable County →Best swimming lakes in Massachusetts →

Planning a trip? Check special fishing regulations for Long Pond — or check the official Massachusetts fishing regulations.

All Lakes in Barnstable County

94 lakes · 8 ranked on readings, 86 without enough sampling8 lakes ranked on readings · 86 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
1Long PondBarnstableNo recent samplesNo recent samples6 µg/LNo recent samplesNo recent samplesNot recorded
2Shubael PondBarnstableNo recent samplesNo recent samples6.8 µg/LNo recent samplesNo recent samples✓ Public
3Mashpee PondBarnstableNo recent samplesNo recent samples8.7 µg/LNo recent samplesNo recent samples✓ Public
4Stillwater PondBarnstableNo recent samplesNo recent samples9 µg/LNo recent samplesNo recent samples✓ Public
5Williams PondBarnstableNo recent samplesNo recent samples11 µg/LNo recent samplesNo recent samples✓ Public
6Hinckleys PondBarnstableNo recent samplesNo recent samples15.8 µg/LNo recent samplesNo recent samples✓ Public
7Coonamessett PondBarnstableNo recent samplesNo recent samples16.7 µg/LNo recent samplesNo recent samples✓ Public
8Mill PondBarnstableNo recent samplesNo recent samples30.5 µg/LNo recent samplesNo recent samples✓ Public
Santuit PondBarnstableNo recent samplesNo recent samples52.4 µg/LNo recent samplesNo recent samplesNot recorded
Long PondBarnstableNo recent samplesNo recent samples5 µg/LNo recent samplesNo recent samples✓ Public
Jemima PondBarnstableNo recent samplesNo recent samples12.1 µg/LNo recent samplesNo recent samples✓ Public
White PondBarnstableNo recent samplesNo recent samples3 µg/LNo recent samplesNo recent samples✓ Public
Clapps PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Gull PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Higgins PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Slough PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Great PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Long PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Salt PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Oyster PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Snake PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Johns PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples65 ft✓ Public
Ashumet PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples65 ft✓ Public
Deep PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Wings PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Siders PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Little PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Green PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Long PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Crooked PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Jenkins PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mares PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Moromoesoy IslandBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bournes PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Eel PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Sage Lot PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Flat PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lewis PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Horse PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Shallow PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Wequaquet LakeBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples30 ft✓ Public
Long PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bearse PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mystic LakeBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Middle PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Hamblin PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples60 ftNot recorded
Wakeby PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Peters PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples50 ft✓ Public
Spectacle PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples40 ftNot recorded
Triangle PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lawrence PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples25 ftNot recorded
Dennis PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Greenough PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mill PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Matthews PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Follins PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Robbins PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples9.8 ftNot recorded
Seymour PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Walkers PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Slough PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Elbow PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Upper MillpondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Griffiths PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lower MillpondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples13.1 ftNot recorded
Scargo LakeBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples46.6 ftNot recorded
Flax PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples73.8 ftNot recorded
Great PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples36.1 ftNot recorded
Herring PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Depot PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Baker PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Pilgrim LakeBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Crystal LakeBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples44 ftNot recorded
Little Cliff PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Cliff PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Sheep PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples60 ftNot recorded
Cahoon PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Hawksnest PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Walkers PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Greenland PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Long PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples70 ftNot recorded
Bucks PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Goose PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samples52.5 ftNot recorded
Lovers LakeBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Mill PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Oyster PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
White PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bucks Creek MarshesBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
West ReservoirBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Fresh PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Swan PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Plashes PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Seine PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Kelleys PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Big Station PondBarnstableNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded

NR = no nutrient or algae reading on record. The measurements are published as the authority reports them. Where the data comes from.

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Other Counties in Massachusetts

Franklin County

26 lakes

Norfolk County

32 lakes

Berkshire County

72 lakes

Worcester County

220 lakes

Hampshire County

21 lakes

Plymouth County

104 lakes

Browse every Massachusetts lake, or the full directory of lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: the Massachusetts Department of Environmental Protection. See data sources.