This data release contains inputs for and outputs from hydrologic simulations for the conterminous United States (CONUS) using the Precipitation Runoff Modeling System (PRMS) version 5.1.0 and the USGS National Hydrologic Model infrastructure (NHM, Regan and others, 2018). Historical simulations using the Maurer atmospheric forcings (Maurer and others, 2002) were produced for the period 1950-2010. These data document the PRMS climate input data files for these simulations. Input files for the simulations include the PRMS base parameter file and five dynamic parameter files that update model parameters on an annual time step for impervious area, dominant land cover type, and canopy interception. Maurer forcings include precipitation and minimum and maximum temperature at a daily time-step. USGS measured streamflow data are included for 8,270 USGS streamgage locations from 1980-2016. Streamflow was calibrated on the odd years and the even years were used for validation.