Figure 10. Bathymetric map of the northernmost St. Clair River study area. Locations of sub-bottom profile figures (bold black lines) and geologic sections (narrow black lines) are shown. Section A-A’ (fig. 12) was constructed from interpretation of the sub-bottom profiles. Inset map shows detail of linguoid bars south of the Blue Water Bridges. (2005 orthophoto base from Michigan State University, Remote Sensing & GIS Research and Outreach Services, USDA-FSA Aerial Photography Field Office.) Click on figure for larger image (2.6 MB).