Oregon State University


                                                               The video shows Nays2d simulation aorund wood structures in 12-m wide stream

Welcome to the Watershed Processes Lab.   Our research is multidisciplinary and seeks to investigate the interactions between fluvial geomorphology, hydrology, and ecology at multiple scales ranging from individual stream reaches through small catchments up to the whole continent!  Our research strategy incorporates both field-based studies and data modeling utilizing detailed laboratory analysis such as water stable isotopes, streambed grain size distribution analysis, or benthic chlorophyll a concentrations. 


The idea is to find how the physical landscape influences the interactions among different components of the ecosystem. Some of the questions we are interested in answering are:How does water aggregate in space and time within a watershed? 

  • What are the effects of climate change and land cover type on hydrologic flow paths?
  • What are the relations among sediment transport, water quality, and stream ecology?
  • How does the frequency and intensity of extreme hydrologic events change due to climate change?

The ultimate goal is to build predicting models of ecosystem response to human and natural disturbances that provide information to society and allow better adaptation and conservation of natural resources



- Oct 25, 2017 Amelia Yeager and Mulu Fratkin presented posters at the The Geological Society of America

- Oct 20, 2017 New paper in Press:  Hatten et al. Effects of contemporary forest harvesting on suspended sediment in the Oregon Coast Range: Alsea Watershed Study Revisited

- Oct 15, 2017: Catalina presented invited talk at the 2017 Binghamton Symposium 

- Sep 15, 2017 Welcome our new Team Members:

  • Sami Cargill, PhD student
  • Emily Crampe, Masters Student
  • Adam Pate, Masters Student

- June 2017, Catalina Participated in the Gordon Conferece: Catchment Science: Interactions of Hydrology, Biology & Geochemistry . Picture. "Contrasting controls of network scale variability in isotope concentration during dry and very dry! conditions in the Western Cascades"
- March 2017, Project Funded by CalFIRE:  "Multiscale investigation of perennial flow and thermal influence of headwater streams into fish bearing systems"
- January 2017, Project Funded by The Spirit Mountain Community Fund : " Where do wood restoration efforts increase fish habitat?" 


- New opportunity NSF funded PhD.

- The Forest Engineering and Management Department (FERM) offers 3-5 fellowship per year. Details here.

-Sep, Amelia Yeager (Master's student in water resources engineering) and Mulu Fratkin (Master's student in water resources engineering) joined the grup.

- June 3, Russel Bair will defend his Master's thesis " Modeling Large Wood Impacts on Stream Hydrodynamics and Juvenile Salmon Habitat." 

- June 6, Scott Katz will defend his Master's Thesis "Sediment Transport Modeling and Implications for Benthic Primary Producers in Oak Creek, OR."


-May 11, Congratulations! The Geomorphology and Land-use Dynamics (GLD) program is recommending award of your proposal #1619700 entitled “Assessing the influence of lithology on the temporal-spatial variability of sediment transport and its relation to primary production in mountain streams”  NSF Project funded.



- Dec Wide participation at AGU:

          -Russell Bair: Poster " Modeling the Effect of Geomorphic Change Triggered by Large Wood Addition on Salmon Habitat in a Forested Coastal Watershed"

 -Lydia Nickolas: Poster: " Temporal and Spatial Variation of Surface Water Stable Isotopes in the Marys River Basin, Oregon"

          - Scott Katz: Oral: " Sediment transport dynamics and its relation to primary production in mountain headwater streams"

     - Catalina: Oral:  " Scaling properties of rainfall-runoff generation processes and nutrient flushing mechanisms in the Oregon Cascade Mountain"

           -Catalina (invited): " Modeling the impacts of climate change on stream water temperature across scales

- Nov, Russell Bair and Scott Katz were awarded Graduate School Fellowships to attend AGU next month

- Oct,  Feauture visit of Catalina Segura to Universidad Austral Chile Valdivia here

- June,  A 10K Grand from the General Research Office was award to fund a project title: Scaling properties of the rainfall runoff generation process in the Oregon Cascade Mountains: A nested approach.


-May, Terra Interview to Catalina http://oregonstate.edu/terra/2015/05/catalina-segura/

- Paper accepted to JGR (http://onlinelibrary.wiley.com/enhanced/doi/10.1002/2014JF003302/)

- March -Post-doctoral Opportunity here

- Feb, the HJ Andrews LTER awarded a one year Graduate Research Assistantship to enhance the ongoing research project that Lydia Nickolas (Master's student) has been conducting about hydrologic connectivity and nutrient flushing mechanisms.



Feb, A 99K FRL Fish and Wildlife Habitat in Managed Forests Research Program Grant to model the geomorphic response to large wood Introduction as a Strategy to restore fish habitat.

Jan, Our Lab Just got a New Picarro L2130-i Analyzer