On Feb. 13, the Upper Missouri Waterkeeper and Big Hole River Foundation submitted a petition to DEQ, seeking an impairment designation for the river tied to nutrients pollution.

News 4 Tucson's Jafet Serrato shows us a hole created by a reclaimed water main break Saturday, impacting residents. But she says the City of Tucson is helping her cover the cost.

Flows on the Big Hole River are well below normal due to hot temperatures, rapid snowmelt and meager precipitation. The low flows could lead to fishing restrictions earlier than usual.

Ranchers in the Big Hole Valley withdraw water in summer to grow the hay their livestock needs during the high-elevation valley’s long, harsh winters.

In its impairment petition, Upper Missouri Waterkeeper and the Big Hole River Foundation argued that excessive levels of nitrogen and phosphorus, which are often associated with poorly maintained ...

BUTTE, Mont. — Montana Fish, Wildlife, and Parks has confirmed an investigation is underway after at least two side-by-sides that drove through an area of the Big Hole River where brown trout ...

Two conservation groups are petitioning the Montana Department of Environmental Quality to designate the Big Hole River, a treasured southwestern Montana fishery, as impaired for nutrient pollution.

An algal bloom colored part of Montana’s Big Hole River green in July 2023. Upper Missouri Waterkeeper/Montana Free Press ... citing its failure to comply with the Clean Water Act.