Ag Data Commons
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Data and code from: Extending irrigation reservoir histories for improved groundwater modeling and conjunctive water management in two Arkansas critical groundwater areas

posted on 2024-02-16, 14:43 authored by Quentin ReadQuentin Read, Michele L. Reba, Daniel D. Shults, John NowlinJohn Nowlin, Joseph Massey

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 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.
  • additional details, including column descriptions from the CSV file.

Software versions used

R version 4.1.2 (

R packages:

  • data.table v1.14.8 (
  • ggplot2 v3.4.4 (
  • sf v1.0-14 (
  • survival v3.5-5 (
  • icenReg v2.0.15 (


USDA-ARS: 6024-13000-004-00D


Data contact name

Read, Quentin

Data contact email


Ag Data Commons

Intended use

This dataset provides all data and code necessary to reproduce the exploratory data analysis and visualization, fitting of a Bayesian time to event model, generation of model predictions, and production of graphs and tables of model predictions that are presented in the linked manuscript.

Use limitations

The code pipeline presented here was written for use with a specific dataset and would need to be modified for use with new data. In addition, it is not guaranteed to work using other versions of R software and packages than the ones listed here.

Temporal Extent Start Date


Temporal Extent End Date



  • periodic


  • Not specified

Geographic Coverage


Geographic location - description

Arkansas, USA

ISO Topic Category

  • geoscientificInformation
  • environment
  • inlandWaters

National Agricultural Library Thesaurus terms

irrigation; groundwater; models; water management; Arkansas; water table; valleys; alluvial aquifer

OMB Bureau Code

  • 005:18 - Agricultural Research Service

OMB Program Code

  • 005:040 - National Research

ARS National Program Number

  • 211

ARIS Log Number


Pending citation

  • No

Public Access Level

  • Public