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Civil and Environmental Engineering Faculty

Dr. Jan Boll

Dr. Jan Boll





(509) 335-4767


(509) 335-7632


  • Ph.D., Agricultural and Biological Engineering, 1995, Cornell University
  • M.S. Agricultural Engineering, 1988, University of Idaho
  • M.S., Land Use Planning, 1988. The Agricultural University of Wageningen
  • B.S. Land Use Planning, 1985, The Agricultural University of Wageningen


  • Professional Engineering (P.E.) License in State of Idaho

Professional Experience

  • Professor, Civil and Environmental Engineering, WSU, 2015-present
  • Special Assistant to VPR & Science Lead NSF-EPSCoR , University of Idaho, 2013-2015
  • Director, Environmental Science & Water Resources Program, University of Idaho, 2011-2015
  • Professor, Biological and Agricultural Engineering, University of Idaho, 2008-2015
  • Director, Waters of the West (incl. Water Resources Graduate Program), UI, 2006- 2011
  • Associate Professor, Biological and Agricultural Engineering, University of Idaho, 2002-2008
  • Affiliate Professor, CATIE (Centro Agronómico Tropical de Investigación y Enseñanza), Turrialba, Costa Rica, 2001-present
  • Assistant Professor, Biological and Agricultural Engineering, University of Idaho, 1996-2002


  • Excellence in Interdisciplinary and Collaborative Efforts, University of Idaho, 2010
  • Outstanding Research Faculty, College of Engineering at University of Idaho, 2006
  • Outstanding Faculty Award, Environmental Science Program, University of Idaho, 2005
  • R.M. Wade Outstanding Teaching Award, College of Agriculture, 2003
  • Engineer of the Year, ASAE Pacific Northwest Section, 2002
  • Outstanding Young Faculty Award, College of Engineering, University of Idaho, 2000

Research Interests

  • Watershed hydrology
  • Water quality
  • Hydrologic modeling
  • Integrated water resources management
  • Vadose zone hydrology


  • Physical hydrology
  • Analytical hydrology
  • Environmental water quality


  • Al-Hamdan, O.Z., F.B. Pierson, M.A. Nearing, C.J. Williams, M. Hernandez, J. Boll, S.K. Nouwakpo, M.A. Weltz, K. Spaeth. 2017. Developing a parameterization approach of soil erodibility for the Rangeland Hydrology and Erosion Model (RHEM). Transactions of the ASABE (in press).
  • Sánchez-Murillo, R., A.M. Durán-Quesada, C. Birkel, G. Esquivel-Hernández, J. Boll. 2017. Tropical precipitation anomalies and d-excess evolution during El Niño 2014-16. Hydrological Processes, DOI 10.1002/hyp.11088.
  • Williams**, C.J., F.B. Pierson, K.E. Spaeth, J.R. Brown, O.Z. Al-Hamdan, M.A. Weltz, M.A. Nearing, J.E. Herrick, J. Boll, P.R. Robichaud, D.C. Goodrich, P. Heilman, D.P. Guertin, M. Hernandez, H. Wei, V.O. Polyakov, G. Armendariz, S.K. Nouwakpo, S.P. Hardegree, P.E. Clark, E.K. Strand, J.D. Bates, L.J. Metz, and M.H. Nichols. 2016. Application to transformative changes on Great Basin Sagebrush rangelands. Rangelands 38:379-388.
  • Boll, J., T. Link, M. Santelmann, R. Heinse, and B. Cosens. 2016. Análisis y síntesis de buenas prácticas en la educación socioambiental interdisciplinaria en Estados Unidos.» Interdisciplina 4, n° 10 (septiembre–diciembre): 117-146.
  • Yousefi, S., H. Moradi, J. Boll, and S. Schönbrodt-Stitt. 2016. Effects of road construction on soil degradation and nutrient transport in Caspian Hyrcanian mixed forests. Geoderma 284:103-112.
  • Brooks, E.S., M. Dobre, W.J. Elliot, J.Q. Wu, and J. Boll. 2016. Watershed-scale evaluation of the Water Erosion Prediction Project (WEPP) model in the Lake Tahoe basin. J. Hydrol. 533:389-402.
  • Williams, C.J., F.B. Pierson, K.E. Spaeth, J.R. Brown, O.Z. Al-Hamdan, M.A. Weltz, M.A. Nearing, J.E. Herrick, J. Boll, P.R. Robichaud, D.C. Goodrich, P. Heilman, D.P. Guertin, M. Hernandez, H. Wei, S.P. Hardegree, E.K. Strand, J.D. Bates, L.J. Metz, and M.H. Nichols. 2016. Incorporating hydrologic data and ecohydrologic relationships into ecological site descriptions. Rangeland Ecology & Management, 69:4-19. (
  • Corrales, J.L., R. Sánchez-Murillo, G. Esquivel-Hernández**, E. Herrera, and J. Boll. 2016. Tracking the water fingerprints of Cocos Island: a stable isotope analysis of precipitation, surface water, and groundwater. Rev. Biol. Trop. (Int. J. Trop. Biol. ISSN-0034-7744) Vol. 64 (Suppl. 1): S105-S0120.
  • Sánchez-Murillo, R., C. Birkel, K. Welsh, G. Esquivel-Hernández, J. Corrales-Salazar, J. Boll, E. Brooks, O. Roupsard, O. Sáenz-Rosales, I. Katchan, R. Arce-Mesén, C. Soulsby, and L.J. Araguás- Araguás. 2016. Key drivers controlling stable isotope variations in daily precipitation of Costa Rica: Caribbean Sea versus Eastern Pacific Ocean moisture sources. Quaternary Science Reviews, 131 (PartB):250-261 (
  • Williams, C.J., Pierson, F.B., Robichaud, P.R., Al-Hamdan, O.Z., Boll, J., Strand, E.K. 2016.  Structural and functional connectivity as a driver of hillslope erosion following disturbance. International Journal of Wildland Fire, 25(3): 306-321.
  • Esquivel-Hernández, G., M. Villalobos-Forbes, R. Sánchez-Murillo, C. Birkel, J. Valdés-González, and J. Boll. 2015. Near Surface Carbon Dioxide and Methane in Urban Areas of Costa Rica. Open Journal of Air Pollution. 4:208-223. (
  • Benson, M.H., C. Lippitt, R. Morrison, B. Cosens, J. Boll, B.C. Chaffin, R. Heinse, D. Kauneck, T. E. Link, C. Scruggs, M. Stone, V. Valentin. 2015.  Five Ways Institutions Can Support Interdisciplinary Research and Scholarship Before Tenure, Environmental Studies and Sciences, DOI:10.1007/s13412-015-0326-9.
  • Brooks, E.S., S. Saia, J. Boll. 2015. Assessing BMP Effectiveness and Guiding BMP Planning Using Process-Based Modeling. JAWRA 51(2):343-358, DOI: 10.1111/1752-1688.12296.
  • Boll, J., E.S. Brooks, E.S., B. Crabtree, S. Dun, and T.S. Steenhuis. 2015. Variable Source Area Hydrology Modeling with the Water Erosion Prediction Project (WEPP) Model, JAWRA 51(2):330-342, DOI: 10.1111/1752-1688.12297.
  • Rittenburg, B., A.L. Squires, J. Boll, E.S. Brooks, Z.M. Easton, and T.S. Steenhuis. 2015. Agricultural BMP Effectiveness and Dominant Hydrological Flow Paths: Concepts and a Review. JAWRA 51(2):305-329, DOI: 10.1111/1752-1688.12293.
  • Sánchez -Murillo, R., E.S. Brooks, W.J. Elliot, and J. Boll. 2015. Isotope hydrology and baseflow geochemistry in natural and human-altered watersheds in the Inland Pacific Northwest, USA. Isotopes in Environmental & Health Studies DOI: 10.1080/10256016.2015.1008468.
  • Sánchez -Murillo**, R., E.S. Brooks, W. Elliot, E. Gazel, and J. Boll. 2015. Baseflow recession analysis in the inland Pacific Northwest of the United States. Hydrogeology Journal 23(2):287-303, DOI 10.1007/s10040-014-1191-4.
  • Al-Hamdan, O.Z., M. Hernandez, F.B. Pierson, M.A. Nearing, C.J. Williams, J.J. Stone, J. Boll, M.A. Weltz. 2015. Rangeland hydrology and erosion model (RHEM) enhancements for applications on disturbed rangelands. Hydrological Processes, 29(3):445-457, DOI: 10.1002/hyp.10167.
  • DOI: 10.1002/hyp.10167.
    ? Williams, C.J., F.B. Pierson, P.R. Robichaud, and J. Boll. 2014. Hydrologic and erosion responses to wildfire along the rangeland-xeric forest continuum in the western US: A review and conceptual model of hydrologic vulnerability. International Journal of Wildland Fire 23:155-172.
  • Sánchez-Murillo, R.,G. Esquivel-Hernández, K. Welsh, E.S. Brooks, J. Boll, R. Alfaro-Solís, J. Valdés-González. 2013. Spatial and Temporal Variation of Stable Isotopes in Precipitation across Costa Rica: An Analysis of Historic GNIP Records. Open Journal of Modern Hydrology, 3(4):226-240. doi: 10.4236/ojmh.2013.34027.
  • Ochoa-Cueva, P., A. Fries, P. Montesinos, J. A. Rodríguez-Díaz, and J. Boll. 2013. Spatial estimation of soil erosion risk by land cover change in the Andes of Southern Ecuador. Land Degradation & Development, DOI: 10.1002/ldr.2219.
  • Saia, S.M., E. S. Brooks, Z. M. Easton, C. Baffaut, J. Boll, T. S. Steenhuis. 2013. Incorporating pesticide transport into the WEPP model for mulch tillage and no tillage plots with an underlying claypan soil. Applied Engineering in Agriculture 29(3): 363-372.
  • Sanchez-Murillo, R, E.S. Brooks, J. Boll, and F. Wilhelm. 2013. Ecohydrological habitat quality and steelhead (Oncrohynchus mykiss) in an effluent dominated stream: potential benefits of water water treatment plants in streams of the Pacific Northwest impoverished by loss of marine derived nutrients. Ecohydrology, DOI: 10.1002/eco.1376.
  • Al-Hamdan, O.Z., F.B. Pierson Jr, M.A. Nearing, C.J. Williams, J.J. Stone, P.R. Kormos, J. Boll and M.A. Weltz. 2012. Concentrated flow erodibility for physically-based erosion models: temporal variability in disturbed and undisturbed rangelands. Water Resour. Res., 48, 7, doi:10.1029/2011WR011464, 2012