FLODRO 3.0: A user friendly personal computer package for flood and drought frequency analyses

User friendly personal computer package FLODRO 3.0 was developed under the programming environment of Visual Basic (Visual Basic is a trademark of Microsoft, Inc.). FLODRO 3.0 has two independent programs: FLOOD and DROUGHT. On program FLOOD, flood frequency analysis is performed by using eight typical distribution functions: Normal, Two and Three Parameter Log-Normal, Two and Three Parameter Gamma, Log-Pearson Type III, Extreme Value Type I and General Extreme Value. On program DROUGHT, drought frequency analysis is performed by using four typical distribution functions: Three Parameter Log-Normal, Extreme Value Types I and III and General Extreme Value. The characteristics, properties and construction of the programs FLOOD and DROUGHT of computer package FLODRO 3.0 are displayed in the paper towards its application in flood and drought frequency analyses. The selected methods of estimation of parameters are those of moments, maximum likelihood, sextiles and probability weighted moments.