6 pls. Scale 1:100,000. Pl. 1, data-base map; pl. 2, bedrock geology; pl. 3, surficial geology; pl. 4, Quaternary stratigraphy; pl. 5, bedrock topography, depth to bedrock, and Bedrock geology models; pl. 6, Subsurface recharge and surface infiltration. There will be no Part B for this Atlas. Supplementary files include ArcGis coverages, shapefiles and/or ESRI grids used to construct the plates, and metadata.