1. Department of Civil Engineering, California State Polytechnic University Pomona, 3801 West Temple Avenue, Pomona, CA 91769, USA
2. Denver Federal Center, US Bureau of Reclamation, PO Box 25007, Denver, CO 80225, USA
3. Eastern Municipal Water District, 2270 Trumble Road, Perris, CA 91570, USA
4. College of Engineering and Computer Science, California State University Northridge (CSUN), Northridge, CA 91330, USA