Toxic algae in Oswego County, New York
11 lakes and waterways have harmful algal bloom reports in New York's official data.
Lakes with bloom history
| Lake | Years with reports | Most recent |
|---|---|---|
| Oneida Lake | 12 | 2025 |
| North Sandy Pond | 9 | 2025 |
| Lake Neatahwanta | 11 | 2025 |
| Oswego River | 4 | 2025 |
| Panther Lake | 3 | 2025 |
| Pleasant Lake | 3 | 2023 |
| South Sandy Pond | 3 | 2025 |
| Lorton Lake | 2 | 2023 |
Other waterbodies with a report
These have one or two reports in a single year, so there isn't enough history for a page of their own yet.
- Lake Temalo (2016)
- Pennellville Pond (2016)
- Vandercamp Lake (2018)
Source: New York State Department of Environmental Conservation (DEC), official data. For current conditions see the NYHABS map.