1. Caltrans, Hydraulic Design, Fresno, California.
2. Department of Civil and Environmental Engineering, 5000 Forbes Ave, PH 119, Carnegie Mellon University, Pittsburgh, PA 15213-3890. Phone: 412-268-2946; Fax: 412-268-7813; E-mail: dzombak@cmu.edu
3. Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania.