Monitoring river discharge near Mount St. Helens, WA.
![Monitoring river discharge near Mount St. Helens, Washington....](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/vhp_img1323.jpg?itok=M3DfNp0n)
Detailed Description
Crews test two methods of measuring discharge of the Muddy River near Mount St. Helens, Washington. The computer and tethered orange float create a vertical discharge profile; the hand-held flow tracker confirms the data. Data collection is becoming more electronic-oriented with periodic confirmation of results by physical observations.
Sources/Usage
Public Domain.