This is the presentation given by Chris Magirl, USGS, at the July 2010 Nisqually River Council Meeting.

1. Fluvial Sedimentation from Mount Rainier: Impacts on Puget Lowland Rivers Chris Magirl, Jon Czuba, Christiana Barnas, and Frank Voss US Geological Survey, Tacoma, WA

3. Why the higher loads in the Puyallup, Nooksack, and Skagit?

5. Prodigious sediment production in Carbon, White, and Nisqually Rivers

6. Image courtesy National Park Service Nisqually River at Sunshine Point in 2006

7. White River

10. Ed Prych, 1988 Bill Sikonia, 1990 USGS Studies from the 1980s

12. Map of the Study Area Including the Puyallup, White, and Carbon Rivers

16. Bed Elevation Change in the Puyallup River between 1984 and 2009

17. Bed Elevation Change in the White River between 1984 and 2009

18. Bed Elevation Change in the Carbon River between 1984 and 2009

19. Map of the Change in Bed Elevation in the Puyallup, White, and Carbon Rivers

21. Bed-Material Gradations in the Puyallup, White, and Carbon Rivers

22. Channel competence to move particles (increasing grain size closer to mountain)

23. Thalweg Profile in the Puyallup, White, and Carbon Rivers

24. Carbon River long profile: Carbon Glacier to Commencement Bay

25. Gage Analysis: Aggradation trends recorded in gaging-station data (12 sites)

26. Gage Analysis

27. Gage Analysis

28. Gage Analysis

29. Map of the Change in Stage for the 50% Exceedance Flow at USGS Gages

30. Map of the Variation in Stage for the 50% Exceedance Flow at USGS Gages

33. HEC-RAS model of river network

34. Channel-Conveyance Capacity of the Lower Puyallup River

35. Channel-Conveyance Capacity of the Middle Puyallup River

36. Channel-Conveyance Capacity of the White River

38. Flow Input to the Upper Puyallup River

39. 5-year Average Annual Sediment Bedload in the Puyallup River