1. Assistant Professor, Dept. of Biosystems and Agricultural Engineering, Oklahoma State Univ., 111 Agricultural Hall, Stillwater, OK 74078-6016 (corresponding author). E-mail: garey.fox@okstate.edu
2. Hydrologist, USDA-ARS National Sedimentation Laboratory, 598 McElroy Dr., Oxford, MS 38655. E-mail: gvwilson@msa-oxford.ars.usda.gov
3. Civil Engineer, Creegan and D’Angelo Consultants, 2420 Martin Rd., Ste. 380, Fairfield, CA 94533. E-mail: rperiket@olemiss.edu
4. Agricultural Engineer, USDA-ARS National Sedimentation Laboratory, 598 McElroy Dr., Oxford, MS 38655. E-mail: bcullum@msa-oxford.ars.usda.gov