USGS/Cascades Volcano Observatory, Vancouver, Washington

REPORT:
An Updated Numerical Simulation of the Ground-Water Flow System for the Castle Lake Debris Dam, Mount St. Helens, Washington, and Implications for Dam Stability Against Heave

-- Evelyn A. Roeloffs, 1994,
An Updated Numerical Simulation of the Ground-Water Flow System for the Castle Lake Debris Dam, Mount St. Helens, Washington, and Implications for Dam Stability Against Heave: U.S. Geological Survey Water-Resources Investigations Report 94-4075, 80p.

A numerical simulation of the ground-water flow system in the Castle Lake debris dam, calibrated to data from the 1991 and 1992 water years, was used to estimate factors of safety against heave and internal erosion. The Castle Lake debris dam, 5 miles northwest of the summit of Mount St. Helens, impounds 19,000 acre-feet of water that could pose a flood hazard in the event of a lake breakout. -- Roeloffs, 1994

In HTML Format
- Abstract
- Table of Contents
Select Excerpts
- Map [16K,InlineGIF]: Castle Lake Piezometer Locations -- Modified from: Roeloffs, 1994, USGS WRI-94-4075
- Table of Well Information -- Depths, Elevations, etc., Modified from: Roeloffs, 1994, USGS WRI-94-4075
Other Menus of Interest
- Mount St. Helens Menu -- CVO Menu
- Castle Lake Menu -- CVO Menu
- Castle Lake Wells Project Menu -- CVO Menu

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12/11/02, Lyn Topinka

REPORT: An Updated Numerical Simulation of the Ground-Water Flow System for the Castle Lake Debris Dam, Mount St. Helens, Washington, and Implications for Dam Stability Against Heave

REPORT:
An Updated Numerical Simulation of the Ground-Water Flow System for the Castle Lake Debris Dam, Mount St. Helens, Washington, and Implications for Dam Stability Against Heave