Weighted Regression for Water Quality Evaluation in Tidal Waters R package WRTDStidal version 1.1.5 CRAN Task View: Hydrology (https://CRAN.R-project.org/view=Hydrology) An adaptation for estuaries (tidal waters) of weighted regression on time, discharge, and season to evaluate trends in water quality time series. Please see Beck and Hagy (2015) <doi:10.1007/s10666-015-9452-8> for details. Software Depends: R (>= 3.5.0), ggplot2 Imports: caret, dplyr, fields, foreach, forecast, gridExtra, lubridate, purrr, quantreg, RColorBrewer, survival, tidyr Suggests: doParallel, EGRET, grDevices, magrittr, plotly, knitr, rmarkdown Marcus W. Beck <mbeck@tbep.org> Comprehensive R Archive Network (CRAN) Marcus W. Beck [aut, cre] CC0 2026-01-15 application/tgz https://CRAN.R-project.org/package=WRTDStidal doi:10.32614/CRAN.package.WRTDStidal