Found this Corps of Engineers web site with maps for navigating the Missouri River: http://www.nwk.usace.army.mil/RiverCharts/RiverCharts.htm Note that the maps are *huge* PDF files and take just short of forever to download. But they show the location of the river channel, navigation markers/buoys, as well as all wing dykes, revetments, etc. and ought to be handy for scouting out "likely" looking locations to fish. For example, on the map that shows where I-435 crosses the river, there's a handy notation - "Approximate location of sunken barge" just west of the bridge. I never would have known about that if not for the map. Maybe it's a good spot to fish, maybe not. But it's worth checking into, that's for sure. Anyway, it's probably worth downloading and saving to your computer the maps for areas where you fish (use the "Save a Copy" button in Adobe Acrobat to save it) - print them out and take them along next time you're on the river.