This dataset includes the surficial extent of the Red River alluvial aquifer, cross-section wells within the Red River alluvial surficial extent, Red River alluvial aquifer base contours and wells, isopach showing combined thickness of the Red River alluvial aquifer sand and gravel units, wells used to construct the isopach of the Red River alluvial aquifer, and well points that were used to construct 25-foot contours showing the altitude of the base of the Red River alluvial aquifer. Datasets are shown in figures of the larger body of work "Hydrogeologic framework of the Red River alluvial aquifer and Carrizo-Wilcox aquifer, in northwestern Louisiana" (Hays and others, 2021).