College of Forestry

Watershed Processes Group

2020 Bretz Club Conference and Field Trip

Lahar generated by melting of crater snow during a small explosion on March 19, 1982. Spirit Lake is in the lower left corner of the image. U.S. Geological Survey photograph by T. Casadevall.
Mount St. Helens: Lordy, lordy, look who's 40!
Toutle, WA

Lordy, Lordy, Look Who’s 40: Mount St. Helens

11th Annual Bretz Club Conference (Virtual) Schedule

Friday, April 24, 2020: 

9:45am      Log into meeting and pass through waiting room

10:00am    Orientation to Bretz Club

10:05am    Introductions

10:50am    Zoom etiquette 

11:00am    Keynote #1: Richard Waitt (USGS, CVO)

Dark Noon --- Eyewitness Chronicles of Mount St. Helens

12:30pm    Lunch Break with Mount St. Helens stories

1:15pm      Keynote #2: Jon Major (USGS, CVO)

Fluvial development, erosion, and deposition in upper North Fork Toutle valley

2:45pm      Short break

3:00pm      Pop-up presentations (3-minutes each) on whatever 

4:30pm      General announcements and farewell


*NEW* Supporting materials of interest:



  • Major, J.J., Grant, G.E., Sweeney, K., and Mosbrucker, A.R., 2020, A multidecade analysis of fluvial geomorphic evolution of the Spirit Lake blockage, Mount St. Helens, Washington: U.S. Geological Survey Scientific Investigations Report 2020-5027, 54 p.,