Lake of the Isles

Fineview, New York

Lake of the Isles is one of the most unique features of the Thousand Islands. Lake of the Isles is not entirely enclosed, as most lakes are, but instead it is interestingly situated in the middle of Wellesley Island. The western end of the lake touches DeWolf Point State Park and the eastern end extends past Hill Island (Canadian), where the lake then opens up to the St. Lawrence River. Lake of the Isles also boasts some of the warmest water temperatures on the St. Lawrence River and is a great location for wildlife sightings.

Those interested in accessing Lake of the Isles by boat should enter from the Northeast end of Wellesley Island (navigation chart or GPS unit strongly encouraged). If interested in visiting Lake of the Isles by car, the best option is to head to DeWolf Point State Park.

COVID-19

Keep your distance from other people.

Practicing social distancing is still essential. Only go to the beach if you are able to keep 6 feet or 2 meters away from others. Follow the instructions provided by your local health authorities. If your community has asked that you remain indoors and away from others, do so. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter our efforts to curb the virus’s spread.

Water Quality
  • Passed water quality tests at least 95% of the time

  • Historical Status
  • This status is based on the latest sample, taken on August 15th, 2022. Upper St. Lawrence Riverkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on August 17th, 2022 at 11:35 AM.
For water quality icon legend, click:  
Current Weather
25°C
A mix of sun and clouds
Monitoring Frequency

Lake of the Isles is sampled weekly from July 3th to August 28th.

Source Information

Recreational public beaches in upstate New York are tested at least once every week typically from mid-June to September. Freshwater beaches in New York are posted when a single sample exceeds 235 E. coli / 100 ml or when the geometric mean of samples collected over a 30-day period exceeds 126 E. coli / 100 ml. Chapter I of the State Sanitary Code Subpart 6-2 includes more criteria for freshwater quality, but most monitoring agencies rely on the E. coli standard.

Read more
Water Quality Graph

Lake of the Isles

Fineview, New York

COVID-19

Keep your distance from other people.

Practicing social distancing is still essential. Only go to the beach if you are able to keep 6 feet or 2 meters away from others. Follow the instructions provided by your local health authorities. If your community has asked that you remain indoors and away from others, do so. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter our efforts to curb the virus’s spread.

Water Quality
  • Passed water quality tests at least 95% of the time
  • Historical Status
  • This status is based on the latest sample, taken on August 15th, 2022. Upper St. Lawrence Riverkeeper updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on August 17th, 2022 at 11:35 AM.
For water quality icon legend, click:  
Current Weather
25°C
A mix of sun and clouds

Lake of the Isles is one of the most unique features of the Thousand Islands. Lake of the Isles is not entirely enclosed, as most lakes are, but instead it is interestingly situated in the middle of Wellesley Island. The western end of the lake touches DeWolf Point State Park and the eastern end extends past Hill Island (Canadian), where the lake then opens up to the St. Lawrence River. Lake of the Isles also boasts some of the warmest water temperatures on the St. Lawrence River and is a great location for wildlife sightings.

Those interested in accessing Lake of the Isles by boat should enter from the Northeast end of Wellesley Island (navigation chart or GPS unit strongly encouraged). If interested in visiting Lake of the Isles by car, the best option is to head to DeWolf Point State Park.

Monitoring Frequency

Lake of the Isles is sampled weekly from July 3th to August 28th.

Source Information

Recreational public beaches in upstate New York are tested at least once every week typically from mid-June to September. Freshwater beaches in New York are posted when a single sample exceeds 235 E. coli / 100 ml or when the geometric mean of samples collected over a 30-day period exceeds 126 E. coli / 100 ml. Chapter I of the State Sanitary Code Subpart 6-2 includes more criteria for freshwater quality, but most monitoring agencies rely on the E. coli standard.

Read more
Water Quality Graph

  Beach Location Water Quality
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Thousand Island Park, New York
Clayton, New York
Fineview, New York
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