1. Environmental Research Laboratory of the University of Arizona; 2601 East Airport Drive; Tucson; AZ; 86706; USA
2. Civil & Environmental Engineering; Utah State University; Logan; UT; USA; 84322-4110
3. USDA-ARS; Arid Land Agricultural Research Center; 21881 N. Cardon Lane; Maricopa; AZ; 85138; USA
4. U.S. Geological Survey, Sonoran Desert Research Station; University of Arizona; Tucson; AZ; USA; 85721