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

Rockland County Lake Quality

New York, 16 lakes, measured by NY DEC

There are 16 monitored lakes in Rockland County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. The 16 monitored lakes in Rockland County carry whatever clarity, phosphorus, and chlorophyll-a readings NY DEC has published, shown as reported.

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.

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Where to stay near Rockland County

Top-rated places to stay near Rockland County

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Quick Answers for Rockland County

Cleanest lakes in Rockland County →Cleanest lakes in New York →Best swimming lakes in New York →

Planning a trip? Check special fishing regulations for Tomkins Lake — or check the official New York fishing regulations.

All Lakes in Rockland County

16 lakes · 0 ranked on readings, 16 without enough sampling0 lakes ranked on readings · 16 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Tomkins LakeRockland5.4 ftNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Lake LucilleRockland2.3 ftNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Hessian LakeRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samples40 ftNot recorded
Lake WelchRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samples29.9 ftNot recorded
Third ReservoirRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Breakneck PondRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake SebagoRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samples28.9 ftNot recorded
Pine Meadow LakeRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samples15 ftNot recorded
Lake WanoksinkRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
DeForest LakeRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Swartwont LakeRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Rockland LakeRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samples35.1 ftNot recorded
DeForest LakeRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Congers LakeRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Cranberry PondRocklandNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Potake PondRocklandNo 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 New York

Seneca County

4 lakes

Hamilton County

198 lakes

Herkimer County

110 lakes

Essex County

129 lakes

Lewis County

33 lakes

Franklin County

134 lakes

Browse every New York 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 New York Department of Environmental Conservation. See data sources.