Harmful Blue-Green Algae Bloom-related Beach Closure Summary

More regulated beaches are closing their swimming areas more frequently and for longer periods of time to ensure that people avoid contact with blue-green algae blooms and their toxins. When a blue-green algae bloom is present at a bathing beach, the swimming area must be closed to protect public health, regardless if toxins are present.


2019 Summary Data

Map of counties with lost beach days due to harmful blue-green algal blooms
County # Times Beaches Closed # Beaches Closed Waterbodies with Beach Closures # Lost Beach Days 
Broome 3 3 Pine Valley Campground Pond, Whitney Point Reservoir, Lakeside Campground Pond 38
Cattaraugus 1 1 Quaker Lake 4
Cayuga 12 8 Cayuga Lake, Owasco Lake 65
Chautauqua 2 1 Lake Chautauqua 21
Dutchess 7 5 Beaver Lake, Deer Lake, Long Pond, Wilcox Pond 91
Essex 4 4 Lake Champlain 19
Jefferson 2 2 Lake Ontario 10
Livingston 4 2 Conesus Lake 29
Madison 1 1 Cazenovia Lake 7
Oneida 3 1 Oneida Lake 32
Onondaga 3 1 Jamesville Reservoir 20
Ontario 11 6 Honeoye Lake, Canandaigua Lake 162
Orange 1 1 Lake Tioratti 4
Putnam 18 10 Lake Carmel, Lake Casse, Putnam Lake, Lake Peekskill, Barger Pond, Cortlandt Lake, Long Pond 190
Rockland 2 2 Lake welch, Lake Sebago 13
Saratoga 1 1 Moreau Lake 3
Seneca 2 2 Cayuga Lake 7
St. Lawrence 1 1 Black Lake 16
Tompkins 5 3 Cayuga Lake  28
Ulster 1 1 Seewackamano Lake 20
Westchester 4 4 Lake Purdy, Lake Mohegan, Lake Lincolndale 130
Yates 4 3 Keuka Lake 18