1. Research Hydraulic Engineer, USDA Agricultural Research Service National Sedimentation Laboratory, P. O. Box 1157, Oxford, MS 38655-1157.
2. Consulting Hydraulic Engineer, Mobile Boundary Hydraulics, P. O. Box 264, Clinton, MS 39060.
3. Professor, Dept. of Civil Engineering, Oregon State Univ., Corvallis, OR 97331-2302.
4. Assistant Professor, Dept. of Geography, Univ. of North Carolina, Chapel Hill, NC 27599-3220.
5. Research Geologist, USDA ARS National Sedimentation Laboratory, P. O. Box 1157, Oxford, MS 38655-1157.