U.S. Geological Survey Open-File Report 2010-1035
Geophysical Data Collected from the St. Clair River between Michigan and Ontario, Canada (2008-016-FA)
Figure 7. Map showing the acoustic backscatter collected by the USGS from the St. Clair River. High acoustic backscatter is displayed as light tones in the imagery, and low acoustic backscatter is displayed as dark tones in the imagery; (A) northernmost survey area in the St. Clair River; (B) at Marysville, Mich.; and (C) at Port Lambton, Ontario. 2005 orthophoto base from Michigan State University, Remote Sensing & GIS Research and Outreach Services, USDA–FSA Aerial Photography Field Office.