DSD-INT 2019 DANUBIUS-RI the Scientific Agenda-Bradley
Timm_etalSER2016Raging
1. Effects of Large Wood on a
Thermally Stressed Fluvial
Ecosystem
Raymond Timm PhD1, Kate MacNeale PhD2,
Andrew Gendaszek3
Ray.timm@fishsciences.net
206-963-1098
1Cramer Fish Sciences
2King County Department of Natural Resources
3U.S. Geological Survey
2. Thank You!
• This work was funded through the Cooperative
Watershed Management Grant program and
WRIA 7.
• Many hands make light work:
• King County
– Bob Pendergast, Chris Gregersen, Dan Lantz, Josh
Kubo, Ken Rauscher
• USGS
– Chad Opatz
5. March 1 – Sept 1, 2015; just to show low flows in June and July
6. Ties to Salmonid Recovery Priorities
• Chinook salmon, steelhead trout
– ESA Threatened
• Coho
– Species of concern
• Temperature TMDLs in Snohomish and
Snoqualmie River systems
– 50 listings for temperature on 303(d)
• Many of those streams are similar to the Raging study site
– Gradient
– Discharge
– Fish use
7. Can large wood help with fluvial
habitat AND temperature problems in
surface waters?
–Upstream reaches representing “Before”
conditions
–Treatment reaches received nearly 100
pieces of large wood, installed by
helicopter
–Downstream reaches allows us to compare
extent and intensity of temperature and
habitat differences
35. So …What’s Next?
• Statistics to test our original hypotheses
• Understand where and why and when we had
enough wood to effect thermal conditions in the
river
• Publish our findings
• Try it again
