Kellie Vaché

Kellie Vaché
232 Gilmore Hall
Office Phone: 

Assistant Professor (Senior Research)

Long Vita: 
Biographical Info
Research Interests/Specializations: 
  • Watershed hydrology and modeling

  • Implications of evolving landuse patterns and climate change

  • Alternative futures analyses for land use planning and sustainability

  • Geographic Information Systems and simulation of environmental processes

Current Research: 
  • Alternative futures for Skagit and Kitsap Counties, Washington State - A set of studies focusing on the application of alternative futuring strategies in the Puget Sound basin. (

  • Assessment of Hydrologic and Water Quality Response to Intensive Cellulosic Biofuel Silviculture - The water quantity and water quality impacts from intensive management for biofuels are largely unknown, and yet there is increasing interest in increasing both the area and intensity of cellulosic biofuel development.. This work, funded by the Department of Energy, is designed to evaluate tradeoffs between cellulosic biofuel production and water quality.

  • Ecohydrological controls on watershed response to landuse change in tropical montane forest - An NSF funded project involving collaborators from OSU, Berkely, ISU. Our primary contribution to the larger project is the incorporation of field-based measurements in the development and application of a set of environmental models.

  • Pesticide fate and transport modeling to inform decision-making - We are developing a web-based application strategy for two commonly used regulatory models (PRZM and EXAMS). The models will become part of new on-line approach that will rank pesticide products for impacts on soil, water and air quality, avian and aquatic life, beneficial organisms, and worker and consumer health and safety (

  • Watershed hydrology and C and N fluxes in the Xilin River - A sub-project of an international research effort focused on matter fluxes in Inner Mongolia (

  • Watershed hydrology in a tropical mountain forest - This work is funded as part of the German DFG funded project called Biodiversity and sustainable management of a megadiverse mountain ecosystem in south Ecuador.(


Selected Publications

Crespo, P., A. Buecker, J. Feyen, K. Vaché, H. Frede, L. Breuer. 2012.  Identification of the runoff generation processes in a montane cloud forest basin combining Mixing Model Analysis and Mean Transit Time. In Press at Hydrol. Processes doi: 10.1002/hup.8382.

Barthold F., C. Tyralla, K. Schneider, K. Vaché, H. Frede, L Breuer. 2011. How many tracers do we need for end member mixing analysis (EMMA)?  A sensitivity analysis. In Press at: Water Resour. Res. DOI: 10.1029/2011WR010604

Plesca I.,  E. Timbe, J. Exbrayat, D. Windhorst, P. Kraft, P. Crespo, K. Vaché, H. Frede, L. Breuer. 2012.  Understanding catchment complexity through model intercomparison - results from a remote montane tropical rainforest. Ecol Model. ISSN: 0304-3800 DOI: 10.1016/j.ecolmodel.2011.05.005

Asbjornsen, H., S. Alvarado-Barrientos, G. Goldsmith, K. Rebel, F. Van Osch, M. Rietkerk, J. Chen, S. Gotsch, C. Tobón-Marin, D. Geissert, A. Gómez-Tagle, K. Vaché, T. Dawson. 2011. Ecohydrological Advances and Applications in Plant Water Relations 1 Research: A Review. J of Plant Ecol 4(1-2) 3-22.