Description: This dataset contains the new estimates of aquifer thickness and transmissivity as presented in the paper of de Graaf et al. (in press) in Fig. 4, 5 and A2. In the ReadMe a detailed description of the data is given. All data are available as PCRaster maps, but can also be viewed using other free software programs QGIS or R. If you are using this dataset please refer to and cite: de Graaf, I.E.M., L. Condon, R. Maxwell (in press), Hyper-resolution continental-scale 3D-aquifer parameterization for groundwater modelling, (in press with Water Resources Research). Citation: Inge de Graaf (2020). Aquifer parameterization North-America, Data to support de Graaf et al. (2020) in press with Water Resources Research.