This section of the combined base map for this level shows the juncture of the Minnesota (St. Peter) and Mississippi Rivers, the St. Croix to the east as it runs south to join with the Mississippi, and the flowages of the Wisconsin to the east. Click the "1840" button to see the information from Joseph Nicollet's "mother map." Click on an area to zoom in. Navigate using the arrows in the map margin.

This is the east central area of the present nine overlapping panels of the base map.  Zooming further into the "deep map" in the area of downtown Saint Paul and the riverbend will make available a portal to drill down further into even deeper layers. It is the only such portal for now. More will be added in the future, for other geographic areas.