Estimation and Plotting of IDF Curves R package IDF version 2.1.3 CRAN Task View: Hydrology (https://CRAN.R-project.org/view=Hydrology) Intensity-duration-frequency (IDF) curves are a widely used analysis-tool in hydrology to assess extreme values of precipitation [e.g. Mailhot et al., 2007, <doi:10.1016/j.jhydrol.2007.09.019>]. The package 'IDF' provides functions to estimate IDF parameters for given precipitation time series on the basis of a duration-dependent generalized extreme value distribution [Koutsoyiannis et al., 1998, <doi:10.1016/S0022-1694(98)00097-3>]. Software Imports: stats, evd, ismev, RcppRoll, pbapply, fastmatch Felix S. Fauer <felix.fauer@met.fu-berlin.de> Comprehensive R Archive Network (CRAN) Jana Ulrich [aut], Laura Mack [ctb], Oscar E. Jurado [ctb], Felix S. Fauer [ctb, cre], Christoph Ritschel [aut], Carola Detring [ctb], Sarah Joedicke [ctb] GPL (>= 2) 2025-07-22 application/tgz https://CRAN.R-project.org/package=IDF doi:10.32614/CRAN.package.IDF