Classify Fluvial Mesohabitats from Depth and Velocity R package hydromeso version 0.1.0 Classifies hydraulic conditions into nominal fluvial mesohabitat categories using water depth and velocity. It implements the eight-class scheme in the preprint by Cordero and Harris <doi:10.2139/ssrn.7100727>, supports validated rectangular custom schemes, and works with tabular and spatial data through 'terra'. Outputs describe hydraulic classes and do not by themselves establish biological habitat quality or species occurrence. Software Depends: R (>= 4.1) Imports: terra Suggests: knitr, rmarkdown, testthat (>= 3.0.0) Elvin Cordero <elvin.cordero@seamountgeo.com> Comprehensive R Archive Network (CRAN) Elvin Cordero [aut, cre] (ORCID: <https://orcid.org/0009-0003-8025-283X>) GPL-3 2026-07-28 application/tgz https://CRAN.R-project.org/package=hydromeso doi:10.32614/CRAN.package.hydromeso en-US