1. Research Hydraulic Engineer, USDA-ARS Arid Land Agricultural Research Center, 21881 N. Cardon Ln., Maricopa, AZ 85238 (corresponding author).
2. Laboratory Director, USDA-ARS Arid Land Agricultural Research Center, 21881 N. Cardon Ln., Maricopa, AZ 85238.
3. Research Hydraulic Engineer, USDA-ARS Arid Land Agricultural Research Center, 21881 N. Cardon Ln., Maricopa, AZ 85238.