Data And Code From: Extending Irrigation Reservoir Histories For Improved Groundwater Modeling And Conjunctive Water Management In Two Arkansas Critical Groundwater Areas

This dataset contains all data and code required to reproduce the time-to-event analysis in the associated manuscript. More detail is found in the associated README.md file.

Contents of repository

• Yaeger_ReservoirDataset_Oct2022.csv: comma-separated data file with reservoir characteristics, construction times, and water table depths and percent saturation at 5-year intervals from 1975-2015.
• CGA_reservoir_analysis.Rmd: RMarkdown notebook with all code required to reproduce the time-to-event analysis in the manuscript and generate the associated plots.
• CGA_reservoir_analysis.html: HTML file rendered from the .Rmd notebook.
• README.md: additional details, including column descriptions from the CSV file.

Software versions used

R version 4.1.2 (https://cran.r-project.org/bin/windows/base/old/4.1.2)

R packages:

• data.table v1.14.8 (https://rdatatable.gitlab.io/data.table/)
• ggplot2 v3.4.4 (https://ggplot2.tidyverse.org/)
• sf v1.0-14 (https://r-spatial.github.io/sf/)
• survival v3.5-5 (https://cran.r-project.org/package=survival)
• icenReg v2.0.15 (https://cran.r-project.org/package=icenReg)
  Organization: Department of Agriculture
  Organization URL: https://catalog.data.gov/organization/usda
  Last updated: 2025-11-21
  Tags: Arkansas, Cache River CGA, Critical Groundwater Area (CGA), Grand Prairie CGA, Mississippi River Valley, Mississippi River Valley Alluvial Aquifer, aquifer, groundwater, hydrology, reservoir