Supporting Datasets Used in the General Groundwater-Model Construction System Version 0.1

This data release serves to provide supporting datasets used by Genmod and GRTD as part of the supplemental material used to generate 30 general models from which water-particle residence time distributions were determined. Descriptions of files found in the “Attached Files” section below (files with the “.7z” extension are 7-Zip files, http://www.7-zip.org/): “General_Groundwater-Model_Construction_System_Version_0point1_Metadata.xml”: Metadata file describing contents of the shapefiles. “Genmod_directory_structure.png”: A screen capture of the directory structure where the components of the General Groundwater-Model Construction System Version 0.1 (Genmod) are organized on a users' computer system. “shapefiles_30_model_domains.7z”: A zip file containing 30 individual shapefiles, one for each model domain. “GWSW_points.7z”: One shapefile of points with water-elevation data for groundwater and surface-water sites from the USGS National Water Information System (NWIS). “Watersheds.7z”: One shapefile that includes all 30 model domain areas. “Wells.7z”: A shapefile of wells sampled as part of the USGS National Water Quality Assessment Program (NAWQA). “Tracer input.7z”: A spreadsheet file with tracer data. To use this spreadsheet, the program TracerLPM available from the USGS software site at https://www.usgs.gov/software/tracerlpm must be installed on the users' system. Installation may require administrator rights. “factor_added_geology.7z”: One shapefile of the Quaternary Atlas where geologic units were mapped to either coarse or fine sediments (report describing this result is in review). Place this file in the 'input_data/Geology' folder.