I have the opportunity to join in with a group floating the Colorado River from Moab to the Confluence in a few weeks. I would like to try it in my Manitou 14. Others will be using IK's and canoes. The group will be out for 6 days. The space available in the Manitou seems to be much more than my backpack, so I don't anticipate there being a problem with finding space for food, camping gear. I don't see having room enough for water for that length of time however. The others normally carry enough water. They doubt that I will be able to filter the river water. Are there any springs, etc along the way to take advantage of? Has anyone had success with filtering the river water?