And another site. This one from the USGS that shows the river conditions at the MS River at St Paul. Once again, I know nothing about what I’m reading, but be someone out there does. :)
http://waterdata.usgs.gov/nwis/nwisman/?site_no=05331000&agency_cd=USGS
I’m still searching for an official depth at that bridge.
The minimum depth of water on the Mississippi River for navigation is 9 feet. Since there is another lock and dam just upstream of the bridge, the depth at this point should be just over that 9 foot minimum.