1. Dept. of Civil Engineering, Univ. of Alberta, Edmonton AB, Canada T6G 2W2 (corresponding author).
2. Katopodis Ecohydraulics Ltd.; formerly, Freshwater Institute, Fisheries & Oceans Canada, 501 Univ. Crescent, Winnipeg MB, Canada R3T 2N6.
3. Civil Design, BC Hydro, 6911 Southpoint Dr., Burnaby BC, Canada V3N 4X8.
4. BPR Engineering Inc., 1100 Burloak Dr., Toronto ON, Canada L7L 6B2.