This Saturday, swimmers will plunge into the not-so-dirty water of the Charles River for the eighth City Splash event. What's happening: From noon to 4pm at the Esplanade, Bostonians who have ...

As temperatures heat up, there are some bodies of water you won’t want to swim in. The annual report card for the Charles River shows there are still improvements to be made. The two sections of ...

The Charles River, however, snakes 80 miles from its source at Hopkinton’s Echo Lake to the locks and dam where it spills into Boston Harbor.

The Charles River has had cyanobacteria blooms almost every summer for the last decade, with the longest bloom lasting 12 weeks in 2020." How can you avoid getting sick when in the areas in question?

Dams are not the only manmade obstacles along the Charles. Seven miles into my journey, in Bellingham, I reached the spot where the river funnels into an underpass beneath Interstate 495.