Gallatin River Goes Green for Fourth Consecutive Year

In early August, a noxious neon-green algal bloom emerged on the mainstem Gallatin River downstream of Big Sky for the fourth consecutive year. Booming development pressure and chronically poor treatment of wastewater in the Big Sky area, combined with hot…

Summer 2020 Neon-Green Algal Bloom on the Gallatin River

Once again Montana’s World-Famous Gallatin River is Experiencing a Miles-Long, Green Algal Bloom.  This “New Normal” is not, in fact, Normal. The Gallatin River is a jewel of our state and the treasured community backyard of Big Sky and Bozeman….

Gallatin River Algal Bloom – August 2018

The Gallatin River is experiencing a large, miles-long neon-green algal bloom for the first time in recent memory. The Algal Bloom: Waterkeeper first became aware of the emerging algal bloom on the Gallatin late July 2018.  A few members shared…