Team Member Candid Photo

Shawn brings 19 years of experience in earth science and water resources, with an emphasis on sediment transport, fluid mechanics and channel evolution, river restoration, dam alternatives and removal, climate change planning, numerical analysis and custom numerical modeling. Shawn is experienced in utilizing 1-D and 2-D hydrodynamic models to guide restoration design development, including use of habitat suitability indices with 2-D output to refine design concepts and communicate results to stakeholders and regulators. He has developed his own 1-D channel evolution model and uses it to efficiently screen river restoration alternatives, and run longer term simulations of channel evolution under a variety of possible conditions. He brings unique expertise to mountain stream study and restoration design through his academic and applied research on step-pools and pool-riffles. Shawn is experienced in application of climate change projections to water supply and endangered species planning, and water rights negotiations. His climate change work involves construction of custom hydrologic models which evaluate municipal water supply availability given a framework of instream flow rules for the provision of suitable habitat conditions for salmonids. He also has experience using climate change software platforms such as SimCLIM. His PhD research involves theory development, numerical modeling and physical experimentation of pool-riffle formation in coarse-grained mountain streams. His work provides a physical basis for pool-riffle formation, as well as a theoretical prediction of riverbed shape knowing nothing more than how channel width changes in the downstream direction. Furthermore, results of his physical experiments have been recast into a pool-riffle design tool that can be used as an independent check of design longitudinal profiles, or for explicit design development.

  • California E.G. 2442
  • California P.G. 7817
  • PhD, Physical Geography, University of British Columbia, 2016
  • M.S. Geological Sciences, Department of Geology, Case Western Reserve University, 1997
  • B.A. Environmental Geology, Case Western Reserve University, 1995
  • Carmel River Reroute and the San Clemente Dam Removal, Monterey County, California. Lead design Geomorphologist for the indicative design phase of this project. During the present dam removal phase, he is a member of the client representative team and a project technical reviewer. In progress.
  • City of Santa Cruz Habitat Conservation and Water Supply Plan, Santa Cruz, California. Lead hydrologist and climate change scientist and Principal-in-charge. Developed a custom hydrologic model to evaluate in-stream habitat flow rules for coho salmon and steelhead as well as water supply available for production. Developed logic and supporting information to apply a variety of climate change projections to the hydrologic model to evaluate potential trajectories of water supply availability under differing habitat flow rules and climate projections. In progress.
  • Stevens Creek at Blackberry Farm Phase I & II, City of Cupertino, Santa Clara County, California. Principal-in-charge and lead design Geomorphologist for the reconstruction of 3,000 feet of Stevens Creek, including removal of 5 fish passage barriers. Completed 2008 and 2013. Stevens Creek Phases I and II has been the recipient of 8 different design achievement awards, including local, state-wide and national awards.
  • Chartrand, S.M., Hassan, M.A., Radíc, V., 2015. Pool-riffle sedimentation and surface texture trends in a gravel bed stream, Water Resources Research, 51, doi:10.1002/2015WR017840.
  • Chartrand, S.M., Jellinek, M., Whiting, P.J., and J.S. Stamm, 2011. Geometric Scaling of Step-pool Mountain Streams: Observations and Implications: Geomorphology 129, doi:10.1016/j.geomorph.2011.01.020.
  • Chartrand, S.M., and Whiting, P.J., 2000. Alluvial architecture in headwater streams with special emphasis on step-pool topography. Earth Surface Processes and Landforms, vol. 25, p. 583-600. Chartrand, S.M., Hassan, M.A., Radíc, V., 2015. Pool-riffle sedimentation and surface texture trends in a gravel bed stream, Water Resources Research, 51, doi:10.1002/2015WR017840.
  • Chartrand, S.M., and Whiting, P.J., 2000. Alluvial architecture in headwater streams with special emphasis on step-pool topography. Earth Surface Processes and Landforms, vol. 25, p. 583-600.

Spending time with great people, working within amazing landscape settings and tackling intriguing and important challenges.

Too numerous to list here. I love the central coastal systems of California, the East Bay Hills, the Upper Klamath basin, and Salmon River basin of Idaho…but if I had to choose it may be Salsipuedes Creek in Santa Barbara County.

I climb, swim, surf, take photographs of our planet, enjoy building anything that I can imagine in my mind, and devise and run simple physical experiments with my kids to show them the beauty and wonder of nature.

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