New York
New York algae bloom map
352 New York lakes with a bloom history, coloured by the latest entry in the state's published data (to 19 November 2025). 194 lakes show a bloom or advisory in that latest entry.
Lakes with a bloom in their latest entry
Newest first. For this season's conditions, use the NYHABS map.
- Kirk Lake Confirmed bloom
- Pepacton Reservoir Confirmed bloom
- Meadow Lake Confirmed bloom
- Truesdale Lake Confirmed bloom
- Silver Lake Confirmed bloom
- Tomhannock Reservoir Confirmed bloom
- Dead Lake Confirmed bloom
- Putnam Lake Confirmed bloom
- Big Reed Pond Confirmed bloom
- Cazenovia Lake Confirmed bloom
- Coopers Neck Pond Confirmed bloom
- Fort Pond Confirmed bloom
- Alma Pond Confirmed bloom
- Saw Kill Confirmed bloom
- Upper Saint Regis Lake Confirmed bloom
- Kellis Pond Confirmed bloom
- Evens Lake Confirmed bloom
- Loch Sheldrake Confirmed bloom
- Croton Falls Reservoir Confirmed bloom
- Fresh Pond Salonga Confirmed bloom
- Song Lake Confirmed bloom
- Lake Neatahwanta Confirmed bloom
- Butterfield Lake Confirmed bloom
- Bond Lake Confirmed bloom
- Whey Pond Confirmed bloom
- Copperas Pond Confirmed bloom
- Gorton Lake Confirmed bloom
- Prestons Pond Confirmed bloom
- Champlain Canal Confirmed bloom
- Sagaponack Lake Confirmed bloom
- Lake Clear Confirmed bloom
- Rondout Creek Confirmed bloom
- De Ruyter Reservoir Confirmed bloom
- Hiawatha Lake Confirmed bloom
- Java Lake Confirmed bloom
- Payne Lake Confirmed bloom
- Red Lake Confirmed bloom
- Pump Pond Confirmed bloom
- Burden Third Lake Confirmed bloom
- Pine Valley Campground Lake Confirmed bloom
- Burden Lake Confirmed bloom
- Skaneateles Lake Confirmed bloom
- Arctic Lake Confirmed bloom
- Old Town Pond Confirmed bloom
- Georgica Pond Confirmed bloom
- South Sandy Pond Confirmed bloom
- Lake Como Confirmed bloom
- Dryden Lake Confirmed bloom
- Franklin Falls Pond Confirmed bloom
- Miller Pond Confirmed bloom
- Seneca River Confirmed bloom
- Duck Lake Confirmed bloom
- Lower Saint Regis Lake Confirmed bloom
- Lower Hudson River Confirmed bloom
- Findley Lake Confirmed bloom
- Lake Tiorati Confirmed bloom
- Delta Lake Confirmed bloom
- Tomkins Lake Confirmed bloom
- Muscoot Reservoir Confirmed bloom
- Red House Lake Confirmed bloom
How to read this map
Each dot is a lake or river with enough reports for its own page, placed at the centre of its reports. The colour shows the latest entry in New York's official data, and bigger dots have had blooms in more years. New York publishes its data once a year, so colours reflect the last published season.
Lakes without a dot may never have been tested. No report doesn't mean the water is safe. For official live conditions, see the NYHABS map, and browse every county on the New York page.