SteveK from saint louis, MO on 6/13/2011 11:04:09 PM:
The Columbia article says that the Boonville guage will be at 27 to 33 feet on Sun. June 19, but right now NOAA's website still has projected levels at around 22 feet on Sat. June 18. So, something not quite right there. If it does get to the 27 to 33 feet range, yes that will shut down areas around Rocheport, Hartsburg, and Portland, MO I believe. In addition, if the trail floods, it will also take awhile to open these areas back up when the river receeds.
However, the trail is generally higher from Hermann to St. Charles, relative to those other areas, so that is another section that could remain open in addition to the Clinton to Boonville leg.