New York
Toxic algae in Richmond County lakes
10 lakes and waterways in Richmond County have harmful algal bloom reports in New York's official data. The most recent entry is for Willowbrook Pond: Willowbrook Pond was on New York's harmful algal bloom list from 28 July 2025 to 21 September 2025, with confirmed bloom status (3 reports). Willowbrook Pond, Silver Lake Reservoir and Reeds Basket Willow Swamp Pond and 4 more have had blooms in three or more years.
Lakes with bloom history
Newest report first. Each lake has its own page with the full history and what the results mean.
- Willowbrook Pond Confirmed bloom
- Jerome X O'Donovan Pond Confirmed bloom
- Silver Lake Reservoir Confirmed bloom
- Reeds Basket Willow Swamp Pond Confirmed bloom
- Clove Lake Confirmed bloom
- Wolfes Pond Sw Not listed in 2025
- Brooks Lake Not listed in 2025
- Martlings Lake Not listed in 2025
- Allison Pond Not listed in 2025
Other waterbodies with a report
These have one or two reports in a single year, which isn't enough history for a page of their own yet.
- Raritan Bay Park Pond 2015
Source: New York State Department of Environmental Conservation (DEC), official data, checked 24 October 2026. For today's conditions see the NYHABS map. No report doesn't mean a lake is safe: most water is only tested occasionally.