Muddy River (Washington)

Mudline left behind on the trees on the banks of the Muddy River show how high the lahars from the 1980 eruption reached here

The Muddy River is a river to the southeast of Mount St. Helens in Washington, USA. The Muddy River flows south-south east and joins the Lewis River just above the Swift Reservoir. The Lewis River flows west and is a tributary to the Columbia River. The east flank of Mount St. Helens is within the watershed of Muddy Creek.^[1]

During the 1980 eruption of Mount St. Helens, lahars (volcanically-induced mud and debris flows) swept through its channel.^[2]

References

1. ^ Mount St. Helens, Washington Major Hydrologic Features USGS map
2. ^ Brantley; Power (1985). "Debris Flows, Mudflows, Jökulhlaups, and Lahars: Lahar Section". US Geological Survey Cascades Volcano Observatory. http://vulcan.wr.usgs.gov/Glossary/Lahars/description_lahars.html. Retrieved 2 September 2010. 

External links

• USGS CVO maps, data, and resources related to the Muddy River and the eruption of Mt. St. Helens