A miles-long algal bloom on the Big Hole River has been linked to warm water, low flows and nutrient loading. Dense algal blooms can harm aquatic life.

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.

WISE RIVER, Mont. — Since the Fellin family founded the Big Hole Lodge in the 1980s to take people fly fishing on the Big Hole River, they have seen significant changes to the cobble-and-boulder ...

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.

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.

The Big Hole River Foundation has been collecting water quality data on the Big Hole for several years. The Montana Department of Environmental Quality approved the nonprofit’s sampling and ...

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.

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.

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 ...