Title: Mount St. Helens sediment control, Washington (Toutle, Cowlitz, and Columbia Rivers)
Subtitle: communication from the Assistant Secretary of the Army (Civil Works) transmitting a report and supplemental report of the Chief of Engineers ... conducted under the authority of section 216 of the Flood Control Act of 1970
Subjects: Sediment control, Eruptions
Places: Washington (State), Columbia River, Toutle River (Wash.), Saint Helens, Mount (Wash.), Cowlitz River (Wash.)