Accession Number:

ADP002412

Title:

Mount St. Helens Eruption, Corps of Engineers Restoration Efforts,

Descriptive Note:

Corporate Author:

ARMY ENGINEER DISTRICT PORTLAND OREG

Personal Author(s):

• Bechly,J. F.

Report Date:

1983-01-01

Pagination or Media Count:

24.0

Abstract:

On 18 May 1980, Mount St. Helens in Washington State experienced a large magnitude volcanic eruption, which severely impacted the surrounding area and the channels of major streams having their sources near the mountain. One of the more significant impacts was the filling in of the flood control and navigation channels of the Cowlitz and Columbia Rivers. Immediately thereafter, the Corps of Engineers undertook a massive program to restore both navigation and flood carrying capacity of these streams. This paper summarizes primarily the dredging efforts and briefly addresses the Corps of Engineers activities as well.

Descriptors:

• *ENVIRONMENTAL MANAGEMENT
• *CHANNELS(WATERWAYS)
• *VOLCANOES
• *ENVIRONMENTAL IMPACT
• DREDGING
• NAVIGATION
• FLOOD CONTROL
• DREDGED MATERIALS
• WATER QUALITY
• ECOSYSTEMS
• RIVERS
• WASHINGTON(STATE)

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE