1. ICARE-ENAC, Ecole Polytechnique Fédérale, CH-1015 Lausanne, Switzerland; and, Faculty of Civil Engineering and Geosciences, Delft Univ. of Technology, The Netherlands.
2. Hydrology and Quantitative Water Management Group, Wageningen Univ., Nieuwe Kanaal 11, 6709 PA Wageningen, The Netherlands.
3. Ministry of Transport, Public Works and Water Management, Institute for Inland Water Management and Waste Water Treatment, P.O. Box 9072, 6800 ED Arnhem, The Netherlands.
4. HKV Consultants, P.O. Box 2120, 8203AC Lelystad, The Netherlands.