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

Chenango County Lake Quality

New York, 21 lakes — no lake here has enough monitoring data for a grade

Chenango County's 21 monitored lakes fall in the moderate-density bracket for New York. The county-level average smooths over real differences — a single agricultural watershed near the southwest corner can pull the average down even if the rest of the county runs clean. No lake in Chenango County has enough sampling behind it for an A–F grade yet. The 21 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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All Lakes in Chenango County

21 lakes · 0 graded, 21 not rated0 graded lakes · 21 not rated, hidden

#LakeGradeClarityPhosphorusAlgaeTrophicAccess
NRLake PetoniaChenangoNR20.2 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRChenango LakeChenangoNR16.6 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRTruitt PondChenangoNR3.2 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRGuilford LakeChenangoNR13.8 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWarn LakeChenangoNR14.1 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRGenegantslet LakeChenangoNR12 ftNo recent samplesNo recent samplesNo recent samples✓ Public
NRPlymouth ReservoirChenangoNR6.2 ftNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCincinnatus LakeChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLong PondChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samples✓ Public
NRLake LudlowChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRLake GerryChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRCorbin SwampChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSteer PondChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBliven PondChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRHunt PondChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRWhites PondChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRNorth PondChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRAfton LakeChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRBrackett LakeChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NRSmith PondChenangoNRNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
NREcho LakeChenangoNRNo 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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See how Chenango 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.