1. Graduate Research Assistant, Ven Te Chow Hydrosystems Laboratory, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana–Champaign, 301 N Mathews Ave., Urbana, IL 61801 (corresponding author).
2. Professor and Director, Ven Te Chow Hydrosystems Laboratory, Dept. of Civil and Environmental Engineering, Univ. of Illinois at Urbana–Champaign, 301 N Mathews Ave., Urbana, IL 61801.