Breadcrumb Home WRF-Hydro® Modeling System WRF-Hydro® Documentation Technical Description & User Guides The WRF-Hydro V5.4.0 Technical Description describes the WRF-Hydro model architecture and physics options, released in March 2025. Please send feedback to wrfhydro@ucar.edu Contact Please direct questions/comments about this page to: WRF-Hydro Support email