The Upper Missouri Waterkeeper and Big Hole River Foundation have petitioned the Montana Department of Environmental Quality ...

The groups argue that an impairment designation will lead the state to put the Big Hole on a “pollution diet” to limit the nitrogen and phosphorous that are contributing to th ...

Part of the work, outlined in a draft environmental assessment, would reconnect two historic oxbows that were cut off by construction of the Yellowstone Park Railway in 1910.