North Fork Toutle River; Elk Rock Lake
- Country:
United States
- Subdivision:
Washington, Cowlitz County
- Date of dam:
1980, 5/18
- River or Lake:
North Fork Toutle River; Elk Rock Lake
- Type of landslide:
Avalanche, debris
- Trigger:
Volcanic eruption
- Landslide volume (cubic meters):
2,800,000,000
- Dam type:
III
- Dam height (meters):
9
- Dam length (meters):
?
- Dam width (meters):
?
- Lake length (meters):
?
- Lake volume (cubic meters):
300,000
- Time to failure (days):
63
- Failure mechanism:
Overtopping
- Breach dimensions:
?
- Controls:
-
- Dam materials:
Volcanic debris
- References:
Jennings and others, 1981
- Comments:
Flood peak flow was 450 cubic meters/second.
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