Watershed Processes Laboratory  

High-resolution modelling of tracer-based flow partitioning at the catchment scale: A comparison of classic water stable isotopes and electrical conductivity approaches (2015–2017)

Modelling of rainfall-runoff response at the event scale in forested ecosystems (2010–2012)

Water stable isotope concentration reveal network scale variability in baseflow water sources in a Western Cascades headwater stream network (201–2018).

The influence of lithology on surface water sources (2015–2017)


Even though significant progress has been made in understanding flow generation mechanisms, there are still questions about the spatial distribution and variability of these processes in the landscape.  Recent investigations have tackled these challenges from both empirical and modelling approaches. The use of water stable isotopes and other tracers in investigations of streamflow generation continues to expand across varied landscapes and land-uses.  Modelling continues to refine the treatment of uncertainties and parameterization.  Despite the combined effort, it is still immensely challenging to predict behavior in regions lacking data or outside the range of observed or modeled conditions.  In light of these difficulties emphasis has recently been placed on studies that incorporate both the experimental and conceptual modelling viewpoints. Below you will find informtion about past and ongoing projects.

Isoscape maps of  δ18O predicted by spatial-stream-network models fit to samples collected in 2015 (A) and June 2016 (B). Stream lines are colored by predicted values.


Giovanny Mosquera (Collaborator)

Dr. Patricio Crespo (Collaborator)


Dr. David Noone (Collaborator)

Dr. Dana Warren (Collaborator)

Dr. Julia Jones (Collaborator)

Johnathan Tenny (undergaduate student)

Dr. Lisa Ganio (Collaborator)


Lydia NIckolas (Alumi)

Dr. Renee Brooks (Collaborator)

More information:

Segura, C., Noone, D., Warren, D., Jones, J., Tenny, J., & Ganio, L. ( 2019). Climate, landforms, and geology affect baseflow sources in a mountain catchment. Water Resources Research, 55. https://doi.org/10.1029/2018WR023551