Water Resources System Simulator R package WRSS version 3.2 CRAN Task View: Hydrology (https://CRAN.R-project.org/view=Hydrology) Tools for constructing, simulating, and analyzing large-scale water resources systems. The package provides functions to represent system components such as reservoirs, aquifers, rivers, diversions, and demand sites, and to simulate system behavior under Standard Operating Policy. It also supports the development and evaluation of water allocation strategies and hydropower operations within integrated water resources systems. Software Depends: R (>= 3.5.0) Imports: ggplot2, GGally, network, Hmisc, nloptr Rezgar Arabzadeh <rarabzad@uwaterloo.ca> Comprehensive R Archive Network (CRAN) Rezgar Arabzadeh [aut, cre], Parisa Aberi [aut], Kaveh Panaghi [aut], Shahab Araghinejad [aut], Majid Montaseri [aut] GPL-3 2026-03-06 application/tgz https://CRAN.R-project.org/package=WRSS doi:10.32614/CRAN.package.WRSS