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

Warren County Lake Quality

New York, 67 lakes — no lake here has enough monitoring data for a grade

Warren County in New York carries 67 monitored lakes — one of the lake-richer counties in our dataset. Coverage that dense usually reflects active lake-association sampling alongside state-agency monitoring. No lake in Warren County has enough sampling behind it for an A–F grade yet. The 67 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.

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Where to stay near Warren County

Top-rated places to stay near Warren County

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

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Planning a trip to Warren County?

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Quick Answers for Warren County

Cleanest lakes in Warren County →Cleanest lakes in New York →Safest swimming lakes in New York →

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

All Lakes in Warren County

67 lakes · 0 graded, 67 not rated0 graded lakes · 67 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
NRFriends LakeWarrenNR13.8 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBrant LakeWarrenNR16.4 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake GeorgeWarrenNR26.7 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRGlen LakeWarrenNR16 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake SunnysideWarrenNR17.8 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake ForestWarrenNR8.9 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake LuzerneWarrenNR17.1 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRJabe PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRTrout LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NREdgecomb PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRKellum PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBeaver PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRDaggett PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRPack Forest LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRDippikill PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRTripp PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSherman LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBurnt PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCrystal LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSullivan PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRPalmer PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLoon LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSmith PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWarner PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRMountain Spring LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHidden LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NREli PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBeaver PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRValentine PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLily PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRIsland PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLong PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWolf PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSwede PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRNorth PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWintergreen LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSpringhill PondsWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRThirteenth LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHour PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCod PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRKibby PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSiamese PondsWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRPuffer PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRTwin PondsWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSecond PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRChatiemac LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWindover LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRAustin PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRGarnet LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRRound PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLittle PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBear PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLens LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRMiddle FlowWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWilcox LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHarrisburg LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSaint John LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSecond LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRFourth LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRKeenan ReservoirWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake VanareWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRButler PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRStewart LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NREcho LakeWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRViele PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRRound PondWarrenNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRRush PondWarrenNRNo 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.

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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 Warren 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.