Idaho's toxic algae blooms are often first detected with the REACT tool by USGS. Learn how satellite imagery shows state agencies, where to test for toxins.

EAU CLAIRE (WKBT) -- A harmful algae bloom has closed a beach in Eau Claire County. Officials with the county's health department Thursday say in addition to a continuing advisory for Lake Altoona ...

The Green Lake Association announced Friday that it identified a harmful blue-green algae bloom in the water at Hattie Sherwood Beach.

Idaho officials issued an advisory for Chuck Slough due to cyanobacteria blooms. Residents are urged to avoid contact as health risks are significant.

The city has closed the beach at Lake Mattoon again until further notice due to a harmful algal bloom, which can release neurological toxins.

On Friday, the Green Lake County Public Health Department issued a beach closure for Hattie Sherwood Beach after identifying a bloom of harmful blue-green algae in the water.

SANDPOINT, Idaho -- A public health advisory has been issued for the Chuck Slough in Sandpoint due to harmful algal blooms.

Syracuse, N.Y. -- Verona Beach State Park, at the eastern shore of Oneida Lake, has been closed for algae blooms since Saturday -- and there’s no projected opening date. At nearby Sylvan Beach ...

The state has issued a health alert at Bluestem Lake in southern Lancaster County due to harmful blue-green algae blooms.

The city of Martinez has issued a public advisory due to a possible harmful algal bloom at the Martinez Marina, warning visitors to avoid contact with the water and to take necessary precautions.

Health officials in Massachusetts are spreading the word about harmful blooms of cyanobacteria in the state.

Nearby at Verona Beach State Park, they have also had issues with Harmful Algal Blooms, closing swimming as well. HABs can appear on water as shades of green, blue-green, yellow, brown, or red ...