North Fork Toutle River; Spirit Lake
- Country:
United States
- Subdivision:
Washington, Skamania County
- Date of dam:
1980, 5/18
- River or Lake:
North Fork Toutle River; Spirit Lake
- Type of landslide:
Avalanche, debris
- Trigger:
Volcanic eruption
- Landslide volume (cubic meters):
2,800,000,000
- Dam type:
III
- Dam height (meters):
69
- Dam length (meters):
?
- Dam width (meters):
?
- Lake length (meters):
5,000
- Lake volume (cubic meters):
330,000,000 (August 1982)
- Time to failure (days):
Did not fail
- Failure mechanism:
-
- Breach dimensions:
-
- Controls:
Lake lowered by pumping; construction of diversion tunnel.
- Dam materials:
Volcanic debris from Mount St. Helens
- References:
Schuster, 1985; Meyer and others, 1986.
- Comments:
Permanent volume of lake is 259,000,000 cubic meters.
|
