Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/1814
Title: Columbia-Cowlitz-Toutle Rivers, Washington, restoration subsequent to Mt. St. Helens eruption
Authors: United States. Army. Corps of Engineers. Committee on Channel Stabilization
Keywords: Channels
Columbia River
Cowlitz River
Flood
Mt. St. Helens
Sand flow
Toutle River
Issue Date: Sep-1985
Publisher: United States. Army. Corps of Engineers. Committee on Channel Stabilization
Engineer Research and Development Center (U.S.)
Series/Report no.: Technical report (United States. Army. Corps of Engineers. Committee on Channel Stabilization) ; 13.
Description: Technical report
INTRODUCTION: On 18 May 1980, Mt. St. Helens, located in southwest Washington (Figure 1), erupted with devastating force causing a huge sand flow down the Toutle River to the Cowlitz River that eventually emptied into and formed a large bar or delta in the Columbia River near its junction with the Cowlitz, reducing the authorized navigation channel depth of 40 ft to no more than 15 ft. Sand flow has been adopted as a descriptive term for volcanic eruptive and untrained materials that traversed and deposited in the Toutle River Basin and the Cowlitz and Columbia Rivers. Subsequently, the US Army Engineer District, Portland, has been working to restore Columbia River navigation and preeruption levels of flood protection along the Cowlitz River.
URI: http://hdl.handle.net/11681/1814
Appears in Collections:Committee on Channel Stabilization

Files in This Item:
File Description SizeFormat 
TR-13-1985.pdf1.32 MBAdobe PDFThumbnail
View/Open