Digital Page Size USA Map with Land and Ocean Floor TerrainAbout This USA Map with Land and Ocean Terrain This stunning USA map is intended for page size illustrations, and is drawn at a nominal size of 6. 5 x 10 inches. The lowest layer is a separate background terrain image which is a 300 dpi CMYK Photoshop file. This image includes the terrain relief image in both the land and water areas. This image is fully editable using the tools in Photoshop, so you can alter the colors as needed to your design