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

Putnam County Lake Quality

New York, 41 lakes, measured by NY DEC

There are 41 monitored lakes in Putnam County. The mix is varied enough that the county-level average tells you the broad strokes, not the choose-this-cabin specifics. The 41 monitored lakes in Putnam 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 Putnam County

Top-rated places to stay near Putnam County

Prices for Oct 23–25, 4 adults. Change dates on the map below.

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Quick Answers for Putnam County

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

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

All Lakes in Putnam County

41 lakes · 0 ranked on readings, 41 without enough sampling0 lakes ranked on readings · 41 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Palmer LakePutnam3.6 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Sagamore LakePutnam5 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Barrett PondPutnam14.4 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Kirk LakePutnam5 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake PeekskillPutnam3.9 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Roaring Brook LakePutnam8.3 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake TibetPutnam3.7 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Barger PondPutnam3.9 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
China PondPutnam15.2 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Indian LakePutnam24.8 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Peach LakePutnam7.2 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Seven Hills LakePutnam4.8 ftNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
Lake CarmelPutnam5.6 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Bog Brook ReservoirPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake TonettaPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Ice PondPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake GleneidaPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
West Branch ReservoirPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samples52 ftNot recorded
Pine PondPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Wonder LakePutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
White PondPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samples12 ft✓ Public
Lake NimhamPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Canopus LakePutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Stillwater PondPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samples30 ftNot recorded
Canopus LakePutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Wiccopee ReservoirPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Boyd Corners ReservoirPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Long PondPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Wixon PondPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samples14.1 ftNot recorded
Lake MahopacPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samples60 ftNot recorded
Secor LakePutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Oscawana LakePutnamNo recent samplesNo recent samplesNo recent samplesNo recent samples30 ftNot recorded
Lake CassePutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake GileadPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Middle Branch ReservoirPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Croton Falls ReservoirPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
East Branch ReservoirPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Haines PondPutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lost LakePutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Putnam LakePutnamNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake ValhallaPutnamNo 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

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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.