1. Department of Civil and Environmental Engineering; University of Illinois at Urbana-Champaign, Urbana, IL 61801
2. Department of Agricultural and Consumer Economics; University of Illinois at Urbana-Champaign, Urbana, IL 61801
3. USGS Earth Resources Observation and Science (EROS) Center, Sioux Falls, SD 57030
4. Department of Civil & Environmental Engineering; University of California Los Angeles, Los Angeles, CA 90095