1. Postdoctoral Researcher, J. Amorocho Hydraulics Laboratory, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, 1 Shields Ave., Davis, CA 95616-5270 (corresponding author).
2. Assistant Project Scientist, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, 1 Shields Ave., Davis, CA 95616-5270.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, 1 Shields Ave., Davis, CA 95616-5270.