1. Department of Water Resources and Ecosystems, IHE Delft Institute for Water Education, Delft, The Netherlands;
2. Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands;
3. Faculty of Civil and Water Resources Engineering, Bahir Dar Institute of Technology (BiT), Bahir Dar University, Bahir Dar, Ethiopia;
4. Research Hydraulic Engineer, Agricultural Research Service, U.S. Department of Agriculture, Washington, DC, USA