Presentation for RRNW 2010

1. Recent trends in effective discharge in Northwest Washington R. Leif Embertson, MS, PE River Restoration Northwest Conference February 1st , 2011

9. NOOKSACK RIVER AT FERNDALE (LOWER WATERSHED)Objective Definition Study Area Methods Results Next Steps Discussion

12. Bin Size and Type

13. Arithmetic vs log

14. Sediment Transport (Observed or Equations)

15. If equations, Hydraulics R=aQb

16. Sensitivity analysisObjective Definition Study Area Methods Results Next Steps Discussion

17. RESULTS Objective Definition Study Area Methods Results Next Steps Discussion UPPER WATERSHED

18. RESULTS Objective Definition Study Area Methods Results Next Steps Discussion LOWER WATERSHED

20. Changes in upper watershed are more significant than in lower watershed

21. Effective discharge (Qeff)

22. Annual sediment loadObjective Definition Study Area Methods Results Next Steps Discussion

24. Recent hydrologic patterns will/are causing a channel response

25. Upper watershed(s) are likely to be directly affected and changes more significant (increase in width/depth)

26. Prepare for a excess sediment to be delivered to lowland areasObjective Definition Study Area Methods Results Next Steps Discussion

28. a long term trend?

29. a cyclic pattern within geologic record?

30. statistical noise?Objective Definition Study Area Methods Results Next Steps Discussion

32. Couple with habitat flow parametersObjective Definition Study Area Methods Results Next Steps Discussion

33. THANK YOU [INSERT PHOTO HERE] Objective Definition Study Area Methods Results Next Steps Discussion