Skip to main content
LakeQuality
Late afternoon sun over Slim Lake, scattering a bright path across wind-textured water
NR

Putnam County Lake Quality

New York, 41 lakes — no lake here has enough monitoring data for a grade

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. No lake in Putnam County has enough sampling behind it for an A–F grade yet. The 41 monitored lakes below carry whatever clarity, phosphorus, and chlorophyll-a measurements exist.

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.

Loading map…

Where to stay near Putnam County

Top-rated places to stay near Putnam County

Prices for Sep 11–13, 4 adults. Change dates on the map below.

Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.

Planning a trip to Putnam County?

Get lake water-quality report cards plus the best cabin & lodging deals near Putnam County — straight to your inbox. No spam, unsubscribe anytime.

Quick Answers for Putnam County

Cleanest lakes in Putnam County →Cleanest lakes in New York →Safest 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 graded, 41 not rated0 graded lakes · 41 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
NRPalmer LakePutnamNR3.6 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSagamore LakePutnamNR5 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBarrett PondPutnamNR14.4 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRKirk LakePutnamNR5 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake PeekskillPutnamNR3.9 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRRoaring Brook LakePutnamNR8.3 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake TibetPutnamNR3.7 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBarger PondPutnamNR3.9 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRChina PondPutnamNR15.2 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRIndian LakePutnamNR24.8 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRPeach LakePutnamNR7.2 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSeven Hills LakePutnamNR4.8 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRLake CarmelPutnamNR5.6 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBog Brook ReservoirPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake TonettaPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRIce PondPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake GleneidaPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWest Branch ReservoirPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRPine PondPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWonder LakePutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWhite PondPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRLake NimhamPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCanopus LakePutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRStillwater PondPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCanopus LakePutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWiccopee ReservoirPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBoyd Corners ReservoirPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLong PondPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWixon PondPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake MahopacPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSecor LakePutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NROscawana LakePutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake CassePutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake GileadPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRMiddle Branch ReservoirPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCroton Falls ReservoirPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NREast Branch ReservoirPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHaines PondPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLost LakePutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRPutnam LakePutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake ValhallaPutnamNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded

NR = not rated: there is not enough recent sampling to support a letter. That is EPA Integrated Reporting Category 3 (insufficient information), not a failing grade. How grading works.

Lake Match

Which lake suits how you actually use one?

Six questions — swimming, fishing, quiet, cabins, drive time — and a shortlist of graded lakes that fit, with the water quality behind each one.

Take the quiz →

Other Counties in New York

Seneca County

4 lakes · Avg grade A

Hamilton County

198 lakes · Avg grade A

Herkimer County

110 lakes · Avg grade A

Essex County

129 lakes · Avg grade A

Lewis County

33 lakes · Avg grade B

Franklin County

134 lakes · Avg grade C

See how Putnam County stacks up in the national county water-quality rankings, or browse the full directory of graded lakes across all United States (49 states), Canada (Ontario, Québec, Nova Scotia, British Columbia and Newfoundland and Labrador), and 38 other country hubs..

Source: EPA National Aquatic Resource Surveys, 2026.