This item provides Soil-Water-Balance (SWB) model output and a model archive of water budget simulations for the Mississippi Embayment Regional Aquifer System (MERAS) during the period 2000 to 2020. Gridded daily data (1 kilometer resolution) include net infiltration (water that might become groundwater recharge), rejected net infiltration, runoff, irrigation, actual evapotranspiration and gross precipitation The model output files are in netcdf format and all water budget components are in inches. The net infiltration, rejected net infiltration, runoff, irrigation, and actual evapotranspiration data sets are from simulations done with the USGS SWB model (version 2; Westenbroek and others, 2018). The precipitation and temperature data used as input for the SWB model application are derived from the PRISM group (http://prism.oregonstate.edu/; Daly and others, 1994). Further details about this application of the SWB model can be found in the related primary publication.The primary publication can be accessed through links in the related external resources section below. There are two child items: one with daily netcdf model output and one with a Soil-Water-Balance model archive. These data provide updates to previously published estimates for 2000 to 2018 in https://doi.org/10.5066/P98PBR8O and https://doi.org/10.5066/P9U484X5.