1. Research Assistant, WaterSHED Center, Dept. of Civil and Environmental Engineering, Tufts Univ., Medford, MA 02155.
2. Professor, WaterSHED Center, Dept. of Civil and Environmental Engineering, Tufts Univ., Medford, MA 02155 (corresponding author).
3. Assistant Professor, Environmental Resource Engineering, SUNY College of Environmental Science and Forestry, 1 Forestry Dr., Syracuse, NY 13210.