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Seneca Lake has biggest Harmful Algal Bloom spotted in the last seven years

A widespread Harmful Algal Bloom was discovered on Seneca Lake Wednesday.

It’s described as one of the most widespread blooms seen since the volunteer program for spotting them was created seven years ago.

There were blooms spotted for two days at the North shore at the Geneva state park waterfront, then Wednesday more were spotted on the Northwest shore.


The blooms stretched away from the shore and out into the lake, then the Hobart and William Smith research vessel William Scandling reported blooms in the middle of the lake.

Northeast and Southwest volunteers began reporting blooms later in the day.

The bloom lasted the rest of the day but the following day winds had broken it up.

Canandaigua, Cayuga, and Keuka Lakes saw blooms as well.