Toxic algae in Washington County, New York
6 lakes and waterways have harmful algal bloom reports in New York's official data.
Lakes with bloom history
| Lake | Years with reports | Most recent |
|---|---|---|
| Champlain Canal | 6 | 2025 |
| Cossayuna Lake | 7 | 2022 |
| Summit Lake | 6 | 2025 |
| Dead Lake | 5 | 2025 |
| Hedges Lake | 3 | 2025 |
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.
- Hadlock Pond (2017)
Source: New York State Department of Environmental Conservation (DEC), official data. For current conditions see the NYHABS map.