page_title: Toutle River
hierarchical_section_title: Toutle River
caption_attribution_description: English: The mouth of the Toutle River in flood near Castle Rock, Washington. The Interstate-5 bridge is in the background. The photo was taken prior to the 1980 eruption of Mt. St. Helens.
context_page_description: The Toutle River is a 17.2-mile tributary of the Cowlitz River in the U.S. state of Washington. It rises in two forks merging near Toutle below Mount St. Helens and joins the Cowlitz near Castle Rock, 20 miles upstream of the larger river's confluence with the Columbia River.
  The river was altered by the 1980 eruption of Mount St. Helens, a nearby volcano, and subsequent flows of ash and other debris. It was further altered by dredging to remove sediment, and by construction of the Toutle River Sediment Retention Structure on the North Fork Toutle River.
context_section_description: The Toutle River is a 17.2-mile (27.7 km) tributary of the Cowlitz River in the U.S. state of Washington. It rises in two forks merging near Toutle below Mount St. Helens and joins the Cowlitz near Castle Rock, 20 miles (32 km) upstream of the larger river's confluence with the Columbia River.
  The river was altered by the 1980 eruption of Mount St. Helens, a nearby volcano, and subsequent flows of ash and other debris. It was further altered by dredging to remove sediment, and by construction of the Toutle River Sediment Retention Structure on the North Fork Toutle River.
caption: Mouth of the river in flood near Castle Rock before the 1980 eruption of Mount St. Helens
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