The Boston Public Health Commission warned residents on Friday about the presence of cyanobacterial algae blooms in the Charles River, downstream of the Longfellow Bridge, following a public health advisory issued by the Massachusetts Department of Public Health.

The Charles River Conservancy, a nonprofit that maintains and develops the parkland around the Charles River, has plans to design and open a swimming area at North Point Park and Splash Pad, according...

Cyanobacteria, a photosynthetic bacteria that can release toxins while in bloom, has been found along the lower Charles River by the Charles River Watershed Association, according to CRWA Aquatic Scientist...