home people academics research links			Peggy Johnson - Professor The Facts 225 Sackett Building University Park, PA  16802 814.865.1660 paj6 at psu dot edu Personal web page Ph.D., 1990, Civil Engineering, University of Maryland. Areas of Interest Bridge scour, river restoration, reliability analysis. Three Representative Publications Johnson, P.A., Niezgoda, S.L., 2003, "Risk-based method for selecting scour countermeasures," ASCE Journal of Hydraulic Engineering, v.130(2), pp.121-128. Johnson, P.A., Hey, R.D., Brown, E.R., Rosgen, D.L., 2002, "Stream restoration in the vicinity of bridges," Journal of the American Water Resources Association, v.38(1), pp.55-67. Johnson, P.A., Brown, E.R., 2001, "Incorporating uncertainty in the design of stream channel modifications," Journal of the American Water Resources Association, v.37(5), pp.1225-1236.