Numerical Simulation of Mudflows from Hypothetical Failures of the Castle Lake Debris Blockage Near Mount St. Helens, WA

Abstract

The purpose of this report was to evaluate the hydraulic characteristics of mudflow events resulting from a hypothetical failure of Castle Lake (a debris blockage on the north fork of the Toutle River, caused by the Mount St. Helens eruption on 18 May 1980) and to examine the ability of a downstream sediment retention structure (SRS) to capture and pass such events through an emergency spillway. (mm)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1990
Accession Number
ADA230294

Entities

People

  • Robert C. Macarthur

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Army Corps Of Engineers
  • Base Flow
  • Channel Capacity
  • Civil Engineering
  • Columbia River
  • Dams
  • Emergencies
  • Engineering
  • Engineers
  • Failure Mode And Effect Analysis
  • Flood Control
  • Monte Carlo Method
  • Plastic Explosives
  • Sedimentation
  • Sediments
  • Spillways
  • Water Resources

Readers

  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Hydrologic Risk Analysis and Mitigation.