Summer’s return brought more than warm weather to the Finger Lakes—officials reported an uptick in harmful algal blooms (HABs) on Seneca Lake this past week, particularly in the calm southeast areas.
According to the Seneca Lake Pure Waters Association, 23 HABs were recorded between September 12 and 18, as light winds allowed algae to collect near shorelines and coves. Even a light breeze, they noted, was enough to break up the blooms.
Dry conditions persist amid Drought Watch
The lake continues to show signs of stress due to ongoing dry conditions. The water level dropped to 444.89 feet, while surface temperatures hovered around 69°F. Turbidity and dissolved oxygen levels remained stable, but state officials say the region remains under a Drought Watch due to below-average rainfall.
Rain is in the forecast for next week, offering some hope for lake health and area ecosystems.
Students get hands-on with lake protection
On September 18, more than 130 sixth graders from Yates County participated in the 58th Annual Conservation Field Day. The event—organized with help from Canandaigua Lake Watershed Association, Cornell Cooperative Extension, and other local groups—gave students a chance to inspect boats for invasive species and learn about protecting local waterways.
“This kind of hands-on education helps shape the next generation of lake stewards,” said organizers.
Tips for fall lake-friendly living
As part of its seasonal advice, Pure Waters is encouraging homeowners to think twice before planting invasive species this fall. Instead of burning bush, for example, they suggest native options like sweetspire, which provides vibrant fall color without harming ecosystems.
Join the trail effort to stop invasives
The Finger Lakes PRISM trail survey project is still accepting volunteers through October. Participants help spot invasive plants like Japanese knotweed and swallow-wort, which can damage trails, streams, and water quality.
How to spot and report a HAB
Residents are urged to stay alert for signs of algal blooms, especially in warm, still water. HABs may look like green paint, surface scum, or pea soup.
If you spot one:
- Avoid the water.
- Take photos and note the location.
- Report it to the DEC or email Pure Waters at [email protected].
For updated bloom maps, safety info, or to support Seneca Lake’s protection efforts, visit senecalake.org.
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