1. Department of Water Science and Engineering; UNESCO-IHE Institute for Water Education; PO Box 3015 Delft the Netherlands
2. Makerere University; Department of Civil and Environmental Engineering; PO Box 7062 Kampala Uganda
3. Section of Water Resources; Delft University of Technology; PO Box 5048 2600 GA Delft the Netherlands
4. Department of Civil Engineering; Central University College; PO Box DS 2310 Dansoman-Accra Ghana