1. Project Engineer, LimnoTech, 501 Avis Dr., Ann Arbor, MI 48108.
2. Associate Professor, Dept. of Civil and Environmental Engineering, Michigan Technological Univ., 1400 Townsend Dr., Houghton, MI 49931 (corresponding author).
3. Professor, Dept. of Civil and Environmental Engineering, Michigan Technological Univ., 1400 Townsend Dr., Houghton, MI 49931.
4. Research Engineer, Upstate Freshwater Institute, P.O. Box 506, Syracuse, NY 13214.