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

Fulton County Lake Quality

New York, 35 lakes — no lake here has enough monitoring data for a grade

There are 35 monitored lakes in Fulton 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 Fulton County has enough sampling behind it for an A–F grade yet. The 35 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 Fulton County

Top-rated places to stay near Fulton County

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

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Quick Answers for Fulton County

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

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

All Lakes in Fulton County

35 lakes · 0 graded, 35 not rated0 graded lakes · 35 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
NRE Caroga LakeFultonNR9.8 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRW Caroga LakeFultonNR11.3 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NREast Caroga LakeFultonNR13.6 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCanada LakeFultonNR13.8 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRPeck LakeFultonNR11.9 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWest Caroga LakeFultonNR12.9 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRPleasant LakeFultonNR13.4 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSaint Johnsville ReservoirFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHillabrandt VlyFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRNine Corner LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRFourth LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRThird LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRAyers LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRKnapps Long LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRDexter LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSpectacle LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRStoner LakesFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBellows LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NREastman LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRPine LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NROtter LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRStewart LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRIrving PondFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRGreen LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWest LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRChase LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCameron ReservoirFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRJackson Summit ReservoirFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRGreat Sacandaga LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWoodward LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRMountain LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWoodworth LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRVandenburgh PondFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRRockwood LakeFultonNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCork Center ReservoirFultonNRNo 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 Fulton 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.