I thought for those who would be interested, here are some detailed maps of Lake Erie:
Eastern Basin: http://www.ngdc.noaa.gov/mgg/greatlakes/lakeerie_cdrom/images/a9.jpg
Central Basin: http://www.ngdc.noaa.gov/mgg/greatlakes/lakeerie_cdrom/images/a8.jpg
Western Basin: http://www.ngdc.noaa.gov/mgg/greatlakes/lakeerie_cdrom/images/a7.jpg
Eastern Basin: http://www.ngdc.noaa.gov/mgg/greatlakes/lakeerie_cdrom/images/a9.jpg
Central Basin: http://www.ngdc.noaa.gov/mgg/greatlakes/lakeerie_cdrom/images/a8.jpg
Western Basin: http://www.ngdc.noaa.gov/mgg/greatlakes/lakeerie_cdrom/images/a7.jpg