Harmful Blue-Green Algae Bloom-related Beach Closure Summary
Regulated bathing beaches continue closing their swimming areas more frequently and for longer periods of time during the beach season (Memorial Day-Labor Day) to ensure that people avoid contact with harmful blue-green algae blooms and their toxins. When a harmful blue-green algae bloom is present at a bathing beach, the swim area must be closed to protect public health, regardless if toxins are present, and remain closed until the water is clear and testing confirms toxin levels are below a level of concern.
2024 Summary Data
| County | # Times Beaches Closed | # Beaches Closed | Waterbodies with Beach Closures | # Lost Beach Days |
|---|---|---|---|---|
| Broome | 3 | 2 | Whitney Point Reservoir, Nathaniel Cole Park Pond | 79 |
| Cattaraugus | 5 | 2 | Quaker Lake, Red House Lake | 23 |
| Cayuga | 10 | 4 | Cayuga Lake, Owasco Lake | 78 |
| Chatauqua | 10 | 5 | Chautauqua Lake | 75 |
| Chenango | 1 | 1 | Camp Thompson Swim Area | 11 |
| Clinton | 1 | 1 | Lake Champlain | 4 |
| Columbia | 1 | 1 | Oakdale Lake | 22 |
| Cortland | 1 | 1 | Song Lake | 8 |
| Dutchess | 2 | 2 | Wilcox Park Pond, Frances J Mark Memorial Park Pond | 29 |
| Jefferson | 7 | 4 | Lake Ontario | 41 |
| Livingston | 4 | 2 | Conesus Lake | 41 |
| Oneida | 3 | 1 | Oneida Lake | 27 |
| Onondaga | 6 | 5 | Cross Lake, Jamesville Reservoir, Gillie Lake, Green Lake, Skaneateles Lake | 86 |
| Ontario | 9 | 4 | Honeoye Lake, Canandaigua Lake | 85 |
| Oswego | 1 | 1 | Oneida Lake | 4 |
| Otsego | 1 | 1 | Otsego Lake | 9 |
| Putnam | 24 | 15 | Lake Casse, Putnam Lake, Lake Peekskill, Barger Pond, Cortlandt Lake, Lake Tonetta, Lake Carmel, Roaring Brook Lake, Oscawana Lake | 403 |
| Rockland | 1 | 1 | Lake Welch | 7 |
| Schuyler | 2 | 2 | Seneca Lake | 11 |
| Seneca | 3 | 1 | Seneca Lake | 12 |
| Sullivan | 1 | 1 | Lake Superior | 4 |
| Tompkins | 3 | 1 | Cayuga Lake | 10 |
| Westchester | 4 | 2 | Lake Mohegan | 47 |
| Yates | 1 | 1 | Keuka Lake | 8 |
