1. Research Fellow, Integrated Decision Support (IDS) Group, Civil and Environmental Engineering Dept., Colorado State Univ., Fort Collins, CO 80523-1372 (corresponding author).
2. Professor and Director of the Integrated Decision Support (IDS) Group, Civil and Environmental Engineering Dept., Colorado State Univ., Fort Collins, CO 80523-1372.
3. Professor, Dept. of Forest, Rangeland, and Watershed Stewardship, Warner College of Natural Resources, Colorado State Univ., Fort Collins, CO 80523.