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

Delaware County Lake Quality

New York, 17 lakes, measured by NY DEC

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. The 17 monitored lakes in Delaware 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 Delaware County

Top-rated places to stay near Delaware County

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Quick Answers for Delaware County

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

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

All Lakes in Delaware County

17 lakes · 0 ranked on readings, 17 without enough sampling0 lakes ranked on readings · 17 without enough sampling, hidden

#LakeClarityPhosphorusAlgaeTrophicMax DepthAccess
Somerset LakeDelaware15.1 ftNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Sexsmith LakeDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samples10.2 ftNot recorded
Odell LakeDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Titus LakeDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Lake DelawareDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Pepacton ReservoirDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samples223.8 ftNot recorded
Perch LakeDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Wawaka LakeDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Big PondDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Sand PondDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samples44.9 ftNot recorded
Cables LakeDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Silver LakeDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Black Ash SwampDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Crystal LakeDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Perkins PondDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samplesNo recent samplesNot recorded
Cannonsville ReservoirDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samples171.6 ftNot recorded
East Sidney LakeDelawareNo recent samplesNo recent samplesNo recent samplesNo recent samples34.4 ft✓ Public

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

Seneca County

4 lakes

Hamilton County

198 lakes

Herkimer County

110 lakes

Essex County

129 lakes

Lewis County

33 lakes

Franklin County

134 lakes

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.