MODFLOW-One-Water model used to support the Central Platte Natural Resources District Groundwater Management Plan

An integrated hydrologic-flow model, called the Central Platte Integrated Hydrologic Model, was constructed using the MODFLOW-One-Water Hydrologic Model code with the Newton solver. This code integrates climate, landscape, surface water, and groundwater-flow processes in a fully coupled approach. This study provided the Central Platte Natural Resources District (CPNRD) with an advanced numerical modeling tool to assist with the update of their Groundwater Management Plan by providing them information on modeled future GW levels under different climate scenarios and management practices. This tool will allow the CPNRD to evaluate other scenarios as management changes in the future. A predevelopment model simulated steady-state hydrologic conditions prior to April 30, 1895 and a development period model discretized into 610 stress periods simulated transient hydrologic conditions from May 1, 1895, to December 31, 2016, using 170 biannual stress periods from 1895 to 1980, and monthly stress periods from May 1, 1980 to December 31, 2016. The calibrated Central Platte Integrated Hydrologic Model was used to simulate the effects of eight different potential future climate and irrigation pumping conditions from January 1, 2019, to December 31, 2049. This USGS data release contains all of the input and output files for the simulations. The user should first open the readme.txt file for descriptions on how to download this model archive and what files are contained in each .7z file.