North Fork Toutle River, Sediment Retention Struct., Mount St. Helens
![North Fork Toutle River Above the Sediment Retention Structure, Mou...](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img954.jpg?itok=5lS1X8Wg)
Detailed Description
The May 18, 1980 eruption of Mount St. Helens had a dramatic impact on the North Fork Toutle River. The debris avalanche, lateral blast and ashfall produced a substantial amount of sediment, which continues to be washed into the river and transported downstream. A Sediment Retention Structure was constructed (out of view) to minimize the amount of sediment flowing downstream. View is to the east with Mount St. Helens in the background.
Sources/Usage
Public Domain.