From the page:
"A century ago, the Clark Fork and Blackfoot Rivers saw their greatest flood in recorded history. The rains and snow of 1908 sent torrents into the two rivers. By early June the Clark Fork River hit a record of nearly 17 and a half feet - a full 4 and a half feet above major flood stage. It wreaked havoc on western Montana. Residents along the river fled with the rise of the water. Bridges washed out. The high flows shut down the rail lines as tracks flooded or were buried in landslides, leaving thousands of passengers stranded. The mines in Butte, unable to ship ore by rail, were closed. 1908 was an election year as well, and the state's Democratic Convention had to be postponed."