1. Dept. of Civil & Construction Engineering, Brigham Young Univ., 430 Engineering Bldg., Provo, UT 84602.
2. Economist, Bureau of Reclamation, Technical Service Center, P.O. Box 25007, Denver, CO 80225-0007. ORCID: .
3. Retired, Dept. of Civil Engineering, Bureau of Reclamation, Lakewood, CO 80225-007. ORCID: .
4. Professor, Dept. of Civil & Construction Engineering, Brigham Young Univ., 430 Engineering Bldg., Provo, UT 84602 (corresponding author).