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    Stephen T. Lancaster

    Stephen Lancaster photo
    Associate Professor
    Discipline: Geology and Geophysics
    Office: Wilkinson 142
    Phone: 541-737-9258
    Fax: 541-737-1200
    Email: lancasts@geo.oregonstate.edu
    Vita or Résumé (PDF)


    Fluvial geomorphology, hydrology

    Research Interests

    Debris flows, sediment budgets, river migration, landscape evolution, surface-groundwater interactions, forest-geomorphic-hydrologic interactions.


    AB Physics, Harvard University, 1990
    PhD Hydrology, Massachusetts Institute of Technology, 1998


    Associate Editor, 2009-present
    Journal of Geophysical Research - Earth Surface

    Associate Director for Water Resources Engineering, 2009-present
    Water Resources Graduate Program, Oregon State University

    Associate Professor, 2007-present
    Dept. Geosciences, Oregon State University

    Assistant Professor, 2001-2007
    Dept. Geosciences, Oregon State University

    Research Associate, 1998-2001
    Dept. Geosciences, Oregon State University


    GEO 309 - Environmental Justice
    GEO 322 - Surface Processes
    GEO 432/532 - Applied Geomorphology
    GEO 582 - Geomorphology of Forests and Streams

    Graduate Students

    Likun Chen, MS Geography, in progress

    John Zunka, MS Water Resources Engineering, in progress

    Rose Wallick, PhD Geology, in progress

    W. Terry Frueh, PhD Water Resources Engineering, in progress

    Graysen Squeochs, MS Water Resource Science, in progress

    Emily Underwood, MS Geology, 2007
    Sediment Transfer and Storage in Headwater Basins of the Oregon Coast Range: Transit Times from 14C Dated Deposits.

    Anne Jefferson, PhD Geology, 2006
    Hydrology and Geomorphic Evolution of Basaltic Landscapes, High Cascades, Oregon.

    Kevin Farthing, MS Environmental Engineering, 2006
    Temperature Effects of Hyporheic Flow

    Jennifer Rose Wallick, MS Geology and Bioresource Engineering, 2004
    Geology, Flooding and Human Activities: Establishing a Hierarchy of Controls on Historical Channel Change, Willamette River, Oregon.

    Nathan Casebeer, MS Geology, 2004
    Sediment Storage in a Headwater Valley of the Oregon Coast Range: Erosion Rates and Styles, and Capacitance of the Valley Floor.

    Surface Processes Research Group Website


    Lancaster, S.T., E.F. Underwood, and W.T. Frueh, 2010. Sediment reservoirs at mountain stream confluences: Dynamics and effects of tributaries dominated by debris flow and fluvial processes. Geological Society of America Bulletin, 122(11/12), 1775-1786, doi: 10.1130/B30175.1.

    Jefferson, A., G.E. Grant, S.L. Lewis, and S.T. Lancaster, 2010. Coevolution of hydrology and topography on a basalt landscape in the Oregon Cascade Range, USA. Earth Surface Processes and Landforms, 35, 803-816, DOI: 10.1002/esp.1976, published online: Jan 28 2010.

    Lancaster, S.T., 2008. Evolution of sediment accommodation space in steady-state bedrock-incising valleys subject to episodic aggradation. Journal of Geophysical Research, 113, F04002, doi:10.1029/2007JF000938.

    Lancaster, S.T. and Casebeer, N.E., 2007. Sediment storage and evacuation in headwater valleys at the transition between debris-flow and fluvial processes. Geology, 35(11), 1027-1030.

    Wallick, J.R., G.E. Grant, S.T. Lancaster, J.P. Bolte, and R.P. Denlinger, 2007. Patterns and controls on historical channel change in the Willamette River, Oregon, USA, in Large Rivers: Geomorphology and Management, edited by A. Gupta, pp. 491-516, John Wiley & Sons, Hoboken.

    Clevis, Q., G.E. Tucker, G. Lock, S.T. Lancaster, N. Gasparini, A. Desitter, and R.L. Bras, 2006. Geoarchaeological simulation of meandering river deposits and settlement distributions: A three-dimensional approach, Geoarchaeology: An International Journal, 21(8), 843-874, doi:10.1002/gea.20142.

    Wallick, J.R., S.T. Lancaster, and J.P. Bolte, 2006. Determination of bank erodibility for natural and anthropogenic bank materials using a model of lateral migration & observed erosion along the Willamette River, Oregon, USA, River Research and Applications, 22(6), 631-649, DOI: 10.1002/rra.925.

    Clevis, Q, G.E. Tucker, S.T. Lancaster, A. Desitter, N. Gasparini, and G. Lock, 2006. A simple algorithm for the mapping of TIN data onto a static grid: Applied to the stratigraphic simulation of river meander deposits. Computers & Geosciences, 32(6), 749-766, doi:10.1016/j.cageo.2005.05.012.

    Lancaster, S.T., and G.E. Grant, 2006. Debris dams and the relief of headwater streams, Geomorphology, 82 (special issue on bedrock rivers, edited by P.A. Carling), 84-97, doi:10.1016/j.geomorph.2005.08.020.

    Lancaster, S.T., S.K. Hayes, and G.E. Grant, 2003. Effects of wood on debris flow runout in small mountain watersheds, Water Resources Research, 39(6), 1168, doi:10.1029/2001WR001227.

    Lancaster, S.T., and G.E. Grant, 2003. You want me to predict what? in Prediction in Geomorphology, edited by P.R. Wilcock and R.M. Iverson, pp. 41-50 (DOI: 10.1029/135GM04), American Geophysical Union, Washington.

    Lancaster ST and Bras RL, 2002. A simple model of river meandering and its comparison to natural channels, Hydrological Processes, 16, 1-26.

    Lancaster, S.T., S.K. Hayes, and G.E. Grant, 2001. Modeling sediment and wood storage and dynamics in small mountainous watersheds, in Geomorphic Processes and Riverine Habitat, J.M. Dorava, D.R. Montgomery, B.B. Palcsak, and F.A. Fitzpatrick (eds.), pp. 85-102, American Geophysical Union, Washington.

    Tucker, G.E., S.T. Lancaster, N.M. Gasparini, R.L. Bras, and S.M. Rybarczyk, 2001. An object-oriented framework for hydrologic and geomorphic modeling using triangulated irregular networks, Computers and Geosciences, 27(8), 959-973.