In September, an unprecedented harmful algal bloom struck the Hudson River. Dense colonies of bright green microcystis — a cyanobacteria that can produce toxins dangerous to humans, pets and wildlife ...

The following is a press release from the Humboldt County Department of Health and Human Services: A recent sampling event confirming dangerous levels of harmful algal toxins identified in Big Lagoon ...

BOISE, Idaho — Fall is nearly here, but for those looking to celebrate the few days of Summer, they should avoid the CJ Strike Reservoir near Mountain Home, as it is under a health advisory. The ...

The Oregon Health Authority on Tuesday lifted the recreational use advisory on the Willamette River in Portland after determining a harmful algal bloom has dissipated. Health officials monitored the ...

A health alert has been issued for blue-green algae toxins in the Caloosahatchee River at the Sebastian Canal. Learn how to ...

BOZEMAN, Mont. — The Gallatin City-County Health Department is testing for potential harmful algal blooms in several local water bodies. Suspected blooms have been identified in Hyalite Reservoir, ...

MAYVILLE, N.Y. (WIVB) — The Chautauqua County Health Department released information this week advising people to be aware of harmful algal blooms in Chautauqua Lake. “Know it, avoid it, report it.

ESOPUS, N.Y. – Town officials are considering what protocols are needed by communities that draw water from the Hudson River amid the threat of harmful algae blooms. On Sept. 8, District ...

COLUMBUS (OSU CFAES) — Ohio Sea Grant, on behalf of The Ohio State University, The University of Toledo, and the Ohio Department of Higher Education (ODHE), has released the 2025 research findings for ...

The South Carolina Department of Environmental Services issued a Recreational Advisory for a cove of J. Strom Thurmond Lake in McCormick County after identifying the presence of a harmful algal bloom ...