1. Associate Professor, Dept. of Hydraulic and Water Resources Engineering, Budapest Univ. of Technology and Economics, Muegyetem Rkpt. 1-4, H-1111, Budapest, Hungary (corresponding author). E-mail: jszilagyil@unl.edu; and, Conservation and Survey Division, Univ. of Nebraska-Lincoln, Lincoln, NE 68588-0517.
2. Senior Research Associate, National Hydrological Forecasting Service of Hungary, VITUKI, H-1095 Kvassay J. ut 1, Budapest, Hungary.
3. Junior Research Associate, National Hydrological Forecasting Service of Hungary, VITUKI, H-1095 Kvassay J. ut 1, Budapest, Hungary.